2175 results about "Polymer modified" patented technology

The present invention provides active, hydrophilic polymer-modified derivatives of insulin. The insulin derivatives of the invention are, in one aspect, suitable for delivery to the lung and exhibit pharmakokinetic and / or pharmacodynamic properties that are significantly improved over native insulin.

Modified polyimines and derivatives thereof suitable as implantable medical devices and coatings therefore are provided. Specifically, implantable medical devices and / or coatings comprise amphiphilic polymers derived from modified polyimines. The medical devices and coatings of the present invention can also be used for in situ nitric oxide release / controlled release drug delivery and are useful for treating or preventing medical conditions such as restenosis, aneurysms and vulnerable plaque.

The present invention provides a method for preparing high-effective algae flocculant from non-toxic, easy-to-bio-degrade, cheap, natural macromolecular polymer modified clay. Said modification can obviously raise flocculation algae-removing capability of different clay, the algae-removing rate of various clays can be 20-95% Said high-effective algae flocculant can be used for controlling and treating large area red tide, fresh water algal bloom, and also can be used for removing harmful algae in river and drinking water plant.

Synthesis methods for creating polymeric compounds comprising dihydroxyphenyl derivatives (DHPD), or DHPp i.e. polymers modified with DHPD, with desired surface active effects are described. The polymer backbone of DHPp has structural or performance features that can be tailored to control physical properties of DHPp, allowing it to be useful for different applications i.e. tissue adhesives or sealants, adhesion promoting coatings, and antifouling coatings.

The invention relates to a modified emulsified asphalt which is specially used for high-speed railway or light rail plate type ballastless track CA sand pulp, the preparation method and the CA sand pulp comprising the modified emulsified asphalt. According to the weight percentage, the modified emulsified asphalt comprises the following components: 45-65% of modified asphalt, 0.5-10% of cation surface active agent, 0.5-10% of non-ionic surface active agent, 0.1-10.0% of accessory ingredient and the rest of water; wherein, the modified asphalt includes 82.0-96.0% of matrix asphalt, 2-6% of polymer modifier having the grain diameter being smaller than or equal to 5mum, 0-10.0% of compatilizer and 0-2.0% of modified asphalt stabilizing agent; the polymer modifier is selected from SBS, SIS, SEBS, SBR, CR, EPDM, NBR, BR or NR. The modified emulsified asphalt has good stability, and the preparation method can improve the production efficiency of the CA sand pulp and the stability of quality, and expands the varieties of the modified emulsified asphalt which is specially used for the CA sand pulp.

A rubber composition of improved hysteretic and physical properties which make it suitable for forming a tire tread, notably a tire tread of reduced rolling resistance, the rubber composition including carbon black having silica fixed to its surface as the majority portion of reinforcing filler and at least one functionalized diene polymer having at the end of its chain a silanol function or a polysiloxane block including a silanol end or a diene polymer modified along its chain by silanol functions.

Golf ball cover and intermediate layers incorporate specified triblock copolymers, a base polymer, and also a polymeric modifier that incorporates an impact modifier, a copolymer or terpolymer having specified functional groups, or mixtures of these. The ball layers provide for good ball characteristics, including feel and controllability, while also providing for superior shear-cut resistance and resistance to cracking. Related methods for making golf ball layers provide for balls having these characteristics.

The present invention relates to methods and compositions for modifying peptides, polypeptides and proteins with polymers, especially glyco-mimetic polymers, so as to improve their biological activity or pharmacokinetic properties. The invention further provides methods and uses for such polymer-modified peptides, polypeptides and proteins. The invention is particularly suitable for use in the synthesis of polymer-modified synthetic bioactive proteins (FIG. 1D), and of pharmaceutical compositions that contain such proteins.

This invention deals with multi-component composite materials and techniques for improved shielding of neutron and gamma radiation emitting from transuranic, high-level and low-level radioactive wastes. Selective naturally occurring mineral materials are utilized to formulate, in various proportions, multi-component composite materials. Such materials are enriched with atoms that provide a substantial cumulative absorptive capacity to absorb or shield neutron and gamma radiation of variable fluxes and energies. The use of naturally occurring minerals in synergistic combination with formulated modified cement grout matrix, polymer modified asphaltene and maltene grout matrix, and polymer modified polyurethane foam grout matrix provide the radiation shielding product. These grout matrices are used as carriers for the radiation shielding composite materials and offer desired engineering and thermal attributes for various radiation management applications.

The present invention relates to a process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent. At least one mediator compound may also be used. The modified pigments can be used in applications such as inkjet ink applications.

The invention discloses a high-strength polypropylene fiber polymer cement mortar and a preparation method thereof. The mortar is composed of the following components in parts by mass: 0.28-0.3 part of silica fume, 0.68-0.7 part of cement and 1.97-2 part of sand. The SiO3 content in the silica fume is higher than 95%; the water-cement ratio is 0.31; the volume content of the polypropylene fiber is 0.9 kg / m<3>; the water reducer:cementing material ratio is 0.9-1%; the defoaming agent:cementing material ratio is 0.5-0.55%; the coupling agent and diluter:cementing material ratio is 0.3%; the polymer modifier:cementing material ratio is 10-11%; and the reducer:cementing material mass ratio is 3-3.5%. By combining the excellent physical and chemical characteristics of the silica fume, when the silica fume is substituted for cement, the consumption of the cement clinker is saved, and the industrial waste is reutilized, thereby greatly enhancing the pressure resistance and bending resistance of the modified cement mortar.

The invention comprises a relatively lightweight cementitious-based material panel. The cementitious-based material panel comprises a foam insulating panel having a first surface and a second surface; a first structural layer of cementitious-based material formed on the first surface of the foam insulating panel and affixed thereto; and a second non-structural layer of cementitious-based material formed on the second surface of the foam insulating panel and affixed thereto. The second non-structural layer of cementitious-based material is substantially thinner than the first structural layer of concrete. The second non-structural layer of cementitious-based material is preferably formed from polymer modified concrete, plaster or mortar. A method of making the cementitious-based material panel is also disclosed.

A shingle formed from a base sheet, with a layer of polymer modified asphalt coating the top of the base sheet, and a layer of conventional oxidized asphalt, free from polymer additives, coating the bottom of the base sheet. Both layers preferably directly contact the strands of the base sheet for good adhesion. This improves the strength, flexibility and ultraviolet resistance of the shingle, while reducing the cost as compared with a shingle which utilized only polymer modified asphalt, and in addition it increases the stiffness of the shingle as compared with one using only polymer modified asphalt.

The invention provides a polymer modified asphalt, and the weight of the components comprising as follows :45-55% matrix asphalt, 4 - 8% blend oil, 12 - 14% of SBS ,5-9 % APAO, 2-7% of High-temperature improvement and 15-20% filler. It also offers polymer modified asphalt, which made of waterproof membrane and the railway bridge, highway bridge deck waterproofing project applications. The invention of these waterproofing membrane have a high standard of waterproof function, it can withstand high intensity of railway bridge and particularly high stress dynamic load .It also have excellent performance on water-resistance, high and low temperature resistance, adhesion, crack resistance, fatigue resistance and other aspects .it can be used for railway bridge and the road deck waterproofing works.

The invention discloses a novel fiber reinforced composite heat insulation plate and a preparing method of the novel fiber reinforced composite heat insulation plate, wherein the novel fiber reinforced composite heat insulation plate comprises a decoration surface layer, a bottom layer and a heat insulation core layer; the heat insulation core layer is clamped between the decoration surface layer and the bottom layer; the decoration surface layer and the bottom layer are made of polymer modified mortar; the heat insulation core layer is manufactured by injecting inorganic foaming materials into three-dimensional fiber fabrics; the decoration surface layer is connected with the upper part of the heat insulation core layer; and the bottom layer is connected with the lower part of the heat insulation core layer. The composite heat insulation plate has the advantages that the heat isolation and heat preservation effects are good; the weight is light; the intensity is high; and the durability is high. The composite heat insulation plate can be used as a heat insulation roof plate or a heat insulation external wall plate and the like for a mainstream building.

The invention belongs to the technical field of road asphalt modification and relates to an ultraviolet aging-resistant compound modified asphalt, wherein on the basis of 100 parts by weight of matrix asphalt, in parts by weight, 1-6 parts of styrene-butadiene-styrene block copolymer, 3-18 parts of waste rubber powder, 5-10 parts of rock asphalt, 0.3-2.5 parts of sweller, 0.03-0.2 part of activator, 0.1-1 part of plasticizer and 0.2-0.5 part of stabilizer are further added, wherein the sweller is furfural extract oil which is subjected to dewaxing treatment previously; the furfural extract oil contains 60wt%-88wt% of aromatic components which contain 40-65wt% of heavy aromatic hydrocarbon; and the waste rubber powder is waste rubber tire tread rubber powder having the content of carbon black between 28wt% and 58wt% and the grain diameter between 45 and 80 meshes. The ultraviolet aging-resistant compound modified asphalt provided by the invention is up to the standard of the polymer modified asphalt in performance, and the ultraviolet aging resistance of the asphalt is improved to a large extent; and waste resources are utilized.

A porous concrete road surface structure made from polymer modified cement and a construction method thereof are disclosed. The structure successively comprises a bottom layer, a bonding layer, a porous concrete layer and a surface treatment layer. The bonding layer is located on the bottom layer, and the porous concrete layer on the bonding layer is prepared through paving, leveling and jolting a composition mixed from broken stone, sand and a slurry mixture of polymer modified cement. The addition of polymer promotes bonding of granular materials with the slurry mixture tightly, the use of the bonding layer makes the road surface structure and the bottom layer form an integral body, and the road surface structure has high strength, good crack resistance, water resistance, ageing resistance and corrosion resistance; the use of an intermittent or single graded of particles results in large pores, makes the road surface water-penetrating, decreases noise and amount of the polymer; and, the surface treatment can improve markedly surface properties and its use according to the application can make the porous concrete layer has rigid or flexible characteristic. The porous concrete road surface can be paved, leveled and jolted by paving machine or manual labor.

Disclosed is a cover material of polymer modification rubber powder porous concrete with high toughness and a making technique thereof. Wherein, in per cubic meter of the concrete, the polymer is 20 to 75 kg, the cement is 200 to 400 kg, and the water to cement ratio is between 0.25 to 0.40 ; in aggregates, the amount of a fine aggregate is less than or equal to 20 percent, and the amount of a coarse aggregate is more than or equal to 80 percent; 0 to 5 kg of plasticizer and / or defoamer are / is added; rubber powder, whose volume fraction is not more than 50 percent, is used to replace the natural aggregate ; or the cement is replaced by mineral admixtures which are not more than 40 percent. The cover material is made by a small machine, a three-roller and an asphalt paver. The main technical parameters of the cover material are as follows: compressive strength is more than or equal to 15 MPa, flexural strength is more than or equal to 5 MPa, anti-skid structure depth is more than or equal to 2.0 mm, porosity is 18 to 22 percent, permeability coefficient is more than or equal to 1.5 mm / s, sound absorption coefficient is more than or equal to 0.30, and noise reduction effect is more than or equal to 5 dB. The cover material can comprehensively utilize the discarded rubber with the advantages of high toughness, sliding resistance and sound absorption and noise reduction. Thus, the cover material is applicable to the covers of the highway, the municipal road and the flat.

The invention relates to a low odor, anti-static electricity, red phosphorus flame retardant thermoplastic composition and a preparation method thereof, and belongs to the field of polymer modification and processing, which includes the following raw materials: by weight, 40-60% of a nylon resin; 5-10% of a microcapsule red phosphor masterbatch; 3%-8%of a compatibilizer; 5-40% of padding; 1-5% of modified activated zeolite powder; 0.5-2% of nanometer magnesium oxide; and 0-5%of other auxiliaries. The modified activated zeolite powder is activated by a natural zeolite powder, and then modified by a cationic surface active agent. According to the low odor, anti-static electricity, red phosphorus flame retardant thermoplastic composition and the preparation method thereof, the low odor, anti-static electricity, and high stability red phosphorus flame retardant thermoplastic composition is prepared by adding the modified activated zeolite powder on the basic formula of the red phosphorus flame retardant thermoplastic composition and simultaneously has a certain antibacterial effect; the thermoplastic composition is capable of being prepared into various sample pieces through extrusion molding, and suitable for coal mine underground equipments, textile equipments and medical health instruments.

A diamond-like carbon film (DLC film) is formed on the surface of a base material made of an inorganic material, such as ceramics, or the like, or an organic material, such as resin, or the like. The surface of the resultant DLC film is treated with plasma, or the like, so as to be activated. Various monomers having biocompatibility, etc., are graft-polymerized to the activated surface of the DLC film, whereby a polymer layer is formed from the monomers grafted to the surface of the DLC film. Thus, the base material coated with the DLC film modified with a polymer which does not readily separate can be realized.

The invention provides a biodegradable starch resin parent material, and its characteristic: its components in weight share: modified starch 60.0-85.0, resin 10.0-25.0, plasticizer 1.0-8.0, lubricant 0.1-1.5, dispersant 1.0-8.0, initiator 0.08-1.0, graft modifier 9.0.-100.0, flexibilizer 1.0-6.0, and stabilizer 0.1-5.0, where the modified starch is a copolymer grafted mechanochemically of starch and monomer or polymer modifier in weight shares of 90.0-100.0 and 1.0-10.0, respectively. It has high starch content, good transparency, excellent processability, excellent mechanical property and good biodegradability.

The invention is related to nanocement production methods by modifying Portland cement, as well as to nanocement compositions. The nanocement production method involves a mechanochemical activation of dispersed grains of Portland cement in the presence of polymeric modifier, with the sodium naphthalenesulfonate content of at least 60 wt %, mineral siliceous additive containing at least 30 wt % SiO2 and gypsum, to form continuous nanoshells—capsules of 20-100 nm in thickness on Portland cement grains made of sodium naphthalenesulfonate structured by calcium cations.

Synthesis methods for creating polymeric compounds comprising dihydroxyphenyl derivatives (DHPD), or DHPp i.e. polymers modified with DHPD, with desired surface active effects are described. The polymer backbone of DHPp has structural or performance features that can be tailored to control physical properties of DHPp, allowing it to be useful for different applications i.e. tissue adhesives or sealants, adhesion promoting coatings, and antifouling coatings.

The invention discloses a method for preparing a nitrogen-doped carbonaceous material by modifying polymer, which can be used for preparing the nitrogen-doped carbonaceous material with the nitrogen doping amount of 5 to 26 at%. The method disclosed by the invention is characterized by comprising the following steps of: selecting a nitrogen-containing organic compound as a nitrogen precursor and utilizing the nitrogen-containing organic compound to perform polymerization reaction on a carbonaceous material to form a compound of the nitrogen-containing polymer and carbonaceous material; and then carrying out heat treatment on the polymer / carbonaceous material compound in the inert atmosphere to carbonize nitrogen-containing polymer in the compound so as to implement the nitrogen doping on the carbonaceous material and prepare the nitrogen-doped carbonaceous material. According to the invention, when the carbonaceous material is subjected to effective nitrogen doping, the original intrinsic structure of the carbonaceous material can be ensured; moreover, the nitrogen-doped carbonaceous material with the nitrogen content of 5 to 26 at% can be prepared; the specific capacity of using a carbon material as an electrode material of a supercapacitor is obviously improved; and the method has the characteristics of simple technical process and wide applicability.

A process for producing a conjugated diene-based polymer which comprises, in the first modification, modifying a conjugated diene-based polymer having active chain ends, which is obtained by polymerizing a diene-based monomer singly or with other monomers and has a content of a cis-1,4 unit of 75% by mole or greater in the conjugated diene portion of the main chain, by reacting the active chain ends with a hydrocarbyloxysilane compound and reacting the modified polymer with a specific compound such as a hydrocarbyloxysilane compound, and a rubber composition containing the polymer modified in accordance with the above process and, preferably, 10 to 100 parts by weight of silica and / or carbon black per 100 parts by weight of the rubber component containing the modified polymer, are provided. The rubber composition containing silica and / or carbon black exhibits improved fracture properties, abrasion resistance, low heat buildup property and excellent workability. A process for producing a conjugated diene-based polymer exhibiting improved cold flow, a polymer produced in accordance with the process, and a rubber composition and a tire using the polymer are also provided.

Systems and methods for combining a mineral acid and a polymer additive in an asphalt composition are described. Methods of preparing a polymer modified asphalt include providing a source of a neat asphalt; heating the neat asphalt; providing a source of a polymer; adding the polymer to the neat asphalt to form a blend; providing a source of a dilution asphalt; and adding the blend to the dilution asphalt to form a diluted product. The systems and methods provide advantages in that the addition of the mineral acid widens the temperature range in which satisfactory performance from a given polymer asphalt composition can be achieved or, as a corollary, reduces the amount of polymer additive that would otherwise be needed to achieve satisfactory performance within a given temperature range.

The present invention provides active, hydrophilic polymer-modified derivatives of insulin. The insulin derivatives of the invention are, in one aspect, suitable for delivery to the lung and exhibit pharmakokinetic and / or pharmacodynamic properties that are significantly improved over native insulin.

An impact resistant roofing shingle which includes an asphalt coated substrate whose unexposed surface is laminated to an organic film. A process of forming that shingle includes the step of applying an organic film, by spraying a latex, by applying a rubber polymer modified asphalt, by compressing a plastic film having a higher melting or decomposition temperature than the melting point of the asphalt coating or by applying an adhesive to which a plastic film is applied to the unexposed surface of the asphalt coated substrate.