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452results about How to "Increase melt viscosity" patented technology

Pressure sensitive adhesives (PSA) laminates

InactiveUS20060263596A1High cohesive strength polymerHigh cohesive strengthAdhesive articlesSynthetic resin layered productsPressure sensitivePolymer
A PSA laminate is provided comprising: a) at least one outer filmic layer (A) comprising at least one filmic polymer; b) at least one adhesive base layer (B) comprising at least one adhesive base polymer; and c) at least one tackifier layer (C) comprising at least one tackifier and at least one polymer; wherein the pressure sensitive adhesive laminate is obtainable by co-extruding the outer filmic layer (A) with the adhesive base layer (B) to produce a non-adhesive laminate and applying the tackifier layer (C) to the adhesive base layer side of the non-adhesive laminate to produce the PSA laminate. Processes for producing the PSA laminate, and articles comprising the PSA laminate are also provided.
Owner:EASTMAN CHEM CO

Glaze for fast-fired crystal glaze ceramic tile, and preparation method and applications of ceramic tile

ActiveCN104829268AReduce granularity requirementsSimple manufacturing processManufacturing technologyBrick
The invention provides a glaze for fast-fired crystal glaze ceramic tile and a preparation method and applications of ceramic tile. The glaze comprises basic crystal glaze and a color developing agent, wherein the basic crystal glaze comprises the following raw materials: zinc oxide, titanium dioxide, quartz, cryolite, zinc phosphate, kaolin, and lead frit. A proper amount of zinc phosphate is introduced into the glaze to avoid the raw material frit treatment, which is carried out to ensure the residual amount of nucleating agent, the requirements on the glaze granularity are reduced, the manufacture technologies of crystal glaze and ceramic tiles are simplified, and the technical difficulties that the crystal glaze sintering technology is complicated, the crystal patterns are difficult to control, and the production cost is high are solved. Moreover, the addition amount of quartz and lead frit is precisely controlled to obtain crystal glaze art ceramic tiles which have the advantages of good crystallization effect, strong three-dimensional effect, and good artistic effect. The provided preparation method has the advantages of simpleness, lower sintering temperature, shorter period, and suitability for massive industrial production.
Owner:DONGGUAN CITY WONDERFUL CERAMICS IND PARK +1

Polylactic acid composition and polylactic acid product

InactiveCN102618003AGood comprehensive mechanical propertiesImprove blow molding processabilityPlasticizerPolylactic acid
The invention provides a polylactic acid composition and a polylactic acid product. The polylactic acid composition comprises the following components by weight percent: 50 to 80 percent of polylactic acid, 0 to 35 percent of adipic acid-polybutylene terephthalate, 0 to 35 percent of poly(butylene succinate), 0.05 to 0.5 percent of peroxide, 0.05 to 0.5 percent of chain extendor and 3 to 15 percent of plasticizer, wherein the content of the adipic acid-polybutylene terephthalate and the content of the poly(butylene succinate) are not 0 percent. The mechanical properties such as melt strength, elongation at break, tenacity and anti-tear strength of the polylactic acid composition provided by the invention are improved, so that the polylactic acid composition with better comprehensive mechanical properties can be obtained, and the polylactic acid composition has more stable processability and better film forming stability.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Method for producing phosphorus copolymerized flame-retarding terylene high-strength industrial yarns

The invention discloses a method for producing phosphorus copolymerized flame-retarding terylene high-strength industrial yarns, which is characterized by comprising the following steps: pumping ethylene glycol (EG) and purified terephthalic acid (PTA) into a pulping kettle according to a molar ratio of 1.15 for pulping; after uniform pulping, transferring the uniform pulp into an esterification kettle for esterification; after the esterification is accomplished, adding blended liquid of a flame retardant, uniformly mixing, and adding the mixture into a polymerization kettle; after the polymerization is accomplished, discharging and cutting to obtain flame-retarding polyester chips with a viscosity of 0.61; feeding the prepared flame-retarding polyester chips into a solid-phase polymerization system, and improving the viscosity to 0.90 to 1.10; and melting at a high temperature into molten spinning solution in a screw extruder, spinning by a spinning component, drawing, and thermally setting to obtain phosphorus copolymerized flame-retarding terylene high-strength industrial yarns. In the invention, a copolymerized flame-retarding modification process is used for flame-retarding modification of the polyester, and the obtained terylene industrial yarns have high strength and a permanent flame-retarding property.
Owner:ZHEJIANG GUXIANDAO POLYESTER DOPE DYED YARN CO LTD

Polyvinyl butyral foamed material

The invention discloses a polyvinyl butyral foamed material, which belongs to the field of high molecular materials. Recycled waste and used polyvinyl butyral is taken as a main raw material; rubber or an elastomer is taken as a main auxiliary material; a foaming agent, a foaming auxiliary agent, a plasticizing agent, a foamed hole nucleating agent, a foamed hole regulating agent, a crosslinking agent, a filler and the like are taken as the auxiliary materials; all the materials are mixed in a high-speed mixing machine at high speed, melted and blended in an extruding machine or an enclosed mixing machine, and formed through compression molding foaming in a flat-plate vulcanizing machine to obtain a polymer foamed material. The foamed material has excellent performance of an elastomer foamed material, has excellent cohesive property, is easy to process, and can be changed from wastes to valuables.
Owner:LUOHE IRON HORSE RUBBER PROD CO LTD

Droplet-resistant flame-retardant polyester, nanometer compound material thereof and method for preparing same

The invention discloses droplet-resistant flame-retardant polyester. The flame-retardant polyester is prepared by random copolymerization of a branched monomer, terephthalic acid or dimethyl terephthalate, ethylene glycol and flame-retardant monomer, wherein the branched monomer is an aliphatic compound or aromatic compound having three or more functional groups; and the flame-retardant monomers adopts any of the following structures. The invention also discloses a method for preparing the droplet-resistant flame-retardant polyester, a nanometer compound material containing the droplet-resistant flame-retardant polyester and a method for preparing the nanometer compound material. Because the droplet-resistant flame-retardant polyester provided by the invention simultaneously contains the branched monomer and the fire retardant having the droplet-resistant effect, the melt viscosity of the droplet-resistant flame-retardant polyester at the high temperature is greatly improved, the sensitivity of the droplet-resistant flame-retardant polyester to temperature is lowered, and the droplet-resistant effect is good; because of the nanometer effect and the blocking effect, the nanometer compound material shows better droplet-resistant effect; and the polyester and the nanometer compound material can be directly used as raw materials for preparing fibers, engineering plastics, films and the like.
Owner:SICHUAN UNIV
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