49results about How to "High biobased content" patented technology

The invention discloses bio-based biodegradable multi-block copolymer as well as a preparation method and application thereof. The multi-block copolymer comprises a chain segment A and a chain segmentB; the chain segment A is fat-aromatic coplyester with number average molecular weight of 3000 to 100000, which is obtained by performing esterification (ester exchange) on C2-C36 fatty diacid and derivatives thereof, C6-C20 aromatic diacid and derivatives thereof, C2-C36 divalent alcohol, and 0.0 to 10% by weight of polyhydroxyl or polycarboxyl compound and performing condensation polymerization; the chain segment B is fatty copolyester with number average molecular weight of 3000 to 100000, which is obtained by performing esterification (ester exchange) on dimer acid and derivatives thereof, C2-C12 fatty diacid and derivatives thereof, C2-C36 divalent alcohol as well as 0.0 to 10% of polyhydroxyl or polycarboxyl compound and performing condensation polymerization. The chain segment A and the chain segment B react with a polyfunctional chain extender of polyisocyanate, a polyepoxy compound and carbodiimide which is 0.01 to 10% of the polymer to form the multi-block copolymer. The product prepared by the method has high biodegradability, mechanical property and processing property, and can be widely applied to the fields of packaging, biological medicine, medical treatment and thelike.

The invention discloses a preparation method of a completely biodegradable resin made of non-staple grain plant modified starch. The method comprises the steps of: first putting non-staple grain plant starch into a reaction vessel, adding water to prepare it into starch milk, and heating it to a proper temperature, conducting stirring and washing, then adding chemicals into a water solution for modification grafting treatment, and then separating water and starch through centrifugation, and conveying the separated modified starch to an airflow drying system for dewatering and drying, then taking 100 parts of dried modified starch, adding 5-50 parts of a compatilizer, 2-15 parts of an anti-block agent, 0-100 parts of polylactic acid, and 150-250 parts of a completely biodegradable copolymer of dibasic acid and dibasic alcohol, and mixing them uniformly, carrying out extrusion granulating or tabletting under an appropriate temperature and pressure, thus obtaining a resin material or sheet special for complete biodegradation. The resin of the invention has both the usage function similar to ordinary plastic products and a complete biodegradability. And after being used and abandoned, the resin can be degraded into carbon dioxide and water that can be consumed by the environment.

The invention provides a preparation method of a grease-based self-repairing photocureable coating. The grease-based self-repairing photocureable coating is prepared from 40-60 parts of epoxy vegetable oil-based acrylate, 20-50 parts of a diluent, 1-4 parts of a photoinitiator, 1-8 parts of a polymerization inhibitor and 5-10 parts of a catalyst. The grease-based self-repairing photocureable resinmaterial prepared by the method does not contain other solvents to participate in reaction, is simple and quick to prepare, and is suitable for green industrial flow line production. The obtained coating shows good self-repairing performance. The coating can be widely applied to the coating fields of metal, woodware, plastics and the like.

The invention discloses a preparation method of novel monohydroxy biology-based epoxy resin, which belongs to the technical field of chemical industry. The method comprises the following steps of: reacting cardanol glycidyl ether with unsaturated fatty acid or cardanol to generate monohydroxy unsaturated biology-based resin A; and performing epoxidation on unsaturated double bonds on an aliphatic chain of the resin A to obtain monohydroxy epoxy resin with high biology content. The novel epoxy resin has the characteristics of environment-friendly and reproducible raw materials, simple synthesis process, high stability, high heat resistance and high electric insulating property after curing, and the like; the biology content is over 90 percent, and the epoxy value is up to 0.28-0.51eq/100g; and the method is suitable for the fields of coatings, composite materials, casting materials, electronic electrical appliance materials, bonding agents, resists and the like.

The invention belongs to the technical field of polymer elastomer materials, and particularly relates to a 3D printing inorganic salt reinforced palm oil-based high-performance elastomer and a preparation method thereof. A bio-based palm oil-based monomer and acrylic acid are used as raw materials, inorganic salt particles are used as a reinforcing material, and the palm oil-based high-performanceelastomer is obtained through a digital light treatment 3D printing technology under the action of a photoinitiator. The prepared palm oil-based high-performance elastomer is environment-friendly andhas good tensile strength and tensile elongation at break.

The invention relates to a synthesis process and application of vegetable oil-based modified isocyanate. Vegetable oil modified isocyanate is adopted, isocyanate and hydroxylated vegetable oil react,the content of modified TDI isocyanate radicals is 30%-42%, the content of modified MDI isocyanate radicals is 15%-25%, and the content of modified TDI/MD mixed isocyanate radicals is 18%-35%. The isocyanate comprises: TDI, MDI, or a mixture of TDI and MDI. Hydroxylated vegetable oil, petroleum-based polyether polyol, petroleum-based polymer polyol, a catalyst, a silicone oil surfactant and a foaming agent are mixed and react with vegetable oil-based isocyanate, and the high vegetable oil-based soft polyurethane foam plastic is obtained. The plant oil-based polyurethane foam has the advantagesthat the proportion of the plant oil-based material in the soft polyurethane foam is 30%-50%, great help is provided for reducing dependence on petroleum-based polyurethane raw materials and improving the degradation rate of the soft polyurethane foam, and powerful support is provided for national environmental protection policies.

The invention provides a wood-plastic composite material with high bio-based content. The wood-plastic composite material comprises the following components in parts by weight: 30-90 parts of bio-based polyolefin resin; 2-10 parts of a compatilizer; 10-70 parts of plant fibers; 1-3 parts of a plant fiber surface modifier; 2-10 parts of a filling agent; and 0-2 parts of a processing aid. The plant fibers are subjected to alkalization treatment. The bio-based content of the wood-plastic composite material is greater than or equal to 80%, the wood-plastic composite material also has high toughness and high rigidity, the cantilever beam notch impact strength is greater than or equal to 5 KJ/m<2>, the bending modulus is greater than or equal to 3000 Mpa, and the wood-plastic composite material can be applied to children toys, tables, chairs and furniture.

The invention discloses light-cured resin based on vegetable oil and itaconic acid and a preparation method and application of the light-cured resin. The preparation method comprises the following steps: firstly, synthesizing an unsaturated itaconic acid half ester precursor by utilizing itaconic acid and glycidyl methacrylate, and then modifying epoxidized vegetable oil by utilizing the precursor to obtain a vegetable oil-based epoxy acrylate prepolymer; and finally, adding a vinyl diluent, and uniformly blending to obtain a final product. The synthetic process is solvent-free, the volatility is low, the synthetic route is simple, the main raw materials of the resin material are the vegetable oil and the itaconic acid, the bio-based content is high, and the use of a large amount of petroleum-based raw materials is expected to be reduced, so that the method is very green and environment-friendly. The obtained bio-based light-cured resin has good mechanical, thermal and coating properties, can be used as a main component of general paint or self-repairing paint, and is used for surface coatings of woodware, metal, plastic and the like.

The invention belongs to the technical field of UV curing materials, and particularly relates to eugenol methacrylate and a preparation method thereof as well as an eugenol-based epoxy vegetable oil acrylate UV curing system and application of the eugenol-based epoxy vegetable oil acrylate UV curing system. Eugenol and 2-mercaptoethanol are used as raw materials, eugenol polyol is prepared through a thiol-ene light click reaction, then eugenol polyol and methacrylic anhydride are subjected to an esterification reaction, and methacrylic acid eugenol is synthesized. Then, epoxy vegetable oil and acrylic acid are subjected to a ring-opening reaction to prepare epoxy vegetable oil acrylate, methacrylic acid eugenol is used as a reactive diluent and is blended with the epoxy vegetable oil acrylate to prepare a film, and the eugenol-based epoxy vegetable oil acrylate light-cured film is obtained. A large number of benzene ring structures and double bonds are introduced into epoxy vegetable oil acrylic acid, the tensile strength of a cured film can be effectively improved, the light curing time is shortened, the corrosion resistance of the film is improved, and the crosslinking density is high.

The invention belongs to the technical field of slipper materials, and particularly discloses a degradable foaming slipper material with high starch content and a preparation method thereof. The composite material is prepared from the following raw materials in parts by weight: 40-65 parts of starch, 15-45 parts of EVA resin, 2-6 parts of modified plant fibers, 3-8 parts of a reactive aid, 0.6-4 parts of a compatibilizer, 1-3 parts of a foaming agent, 0.8-2 parts of a hydrophobic aid, 0.4-1 part of a lubricant, 0.5-1.2 parts of a grafting aid, 0.1-0.5 part of an antibacterial agent and 0.1-0.5 part of an antioxidant. The slipper material is degradable, high in bio-based content and good in mechanical strength, the foaming slipper material is good in rebound resilience, starch is adopted as a base material, the cost can be remarkably reduced, compared with a traditional EVA foaming material, the cost can be reduced by 30%, the starch is adopted as the base material, coloring is stable and uniform, and no obvious plastic taste exists.

The invention belongs to the field of UV curing materials, and specifically relates to a preparation method of a multifunctional bio-based acrylate prepolymer, comprising: reacting tetrakis(3-mercaptopropionic acid) pentaerythritol ester and vegetable oleic acid to obtain vegetable oil-based polycarboxylic acid; Vegetable oil-based polycarboxylic acid, stir and control the temperature to 50-70°C, add a tertiary ammonium salt catalyst, raise the temperature to 70-90°C and add glycidyl methacrylate containing a polymerization inhibitor to react, then raise the temperature to 90-100°C reaction to obtain a functional bio-based acrylate prepolymer, and then compound with isobornyl methacrylate to prepare a bio-based UV curable material. On the one hand, the yield of the prepolymer of the present invention can be as high as more than 99%; secondly, four vegetable oleic acids are introduced into the mercapto groups of tetrakis (3-mercaptopropionic acid) pentaerythritol ester, thereby improving the bio-based content of UV curable coatings ; Third, introducing bio-based raw materials into acrylate and compounding bio-based active diluent isobornyl methacrylate reduces the consumption of fossil resources.