摘要:
Polymer compositions containing a polyphenylene etherpolyolefin copolymer obtained by melt mixing an ethylene/(alkyl)acrylic acid copolymer with a polyphenylene ether or an ester end-capped polyphenylene ether. The compositions are used in many commercial applications requiring high temperature resistance including formation of films, fibers and molded articles with excellent surface appearance.
摘要:
A process for increasing the crystallization rate and crystallization temperature of thermoplastic polyesters by incorporating into the polyesters quaternary ammonium salts in amounts effective to increase the crystallization temperatures of the polyesters at least 15.degree. C., which quaternary ammonium salts are substantially free of metal salts of organic acid functional groups. Molding compositions of thermoplastic polyesters and quaternary ammonium salts present in amounts effective to increase the crystallization temperatures of the polyesters at least 15.degree. C.
摘要:
A composition for forming an article having an improved resistance to hydrolysis is disclosed. The composition comprises a polyalkylene terephthalate and/or polyester thereof, a triglyceride, an epoxy component, and a plasticizer. The polyalkylene terephthalate has terminal carboxyl groups and hydroxyl groups and internal ester linkages. The triglyceride has at least one acid component with 6 to 30 carbon atoms and at least one epoxy group for reacting with the carboxyl groups. The epoxy component has internal aromatic groups and at least one terminal epoxy group for reacting with the carboxyl groups. The plasticizer comprises an esterification product of a polyoxyalkylene glycol with 1 to 20 carbon atoms and an aliphatic carboxylic acid with 1 to 25 carbon atoms for improving melt flow properties and for reducing hydrolysis of the composition.
摘要:
Polymer compositions containing a polyphenylene etherpolyolefin copolymer are obtained by reactive melt mixing olefin-(alkyl)acrylic acid copolymer with a polyphenylene ether and a carboxylic anhydride. The compositions are used in many commercial applications requiring high temperature resistance including formation of films, fibers and molded articles with excellent surface appearance.
摘要:
A moldable polyblend of thermoplastic polyesters, one or more polymers selected from polyamides, polyolefins and mixtures thereof, and ethylene copolymers containing epoxy groups. The ethylene copolymers contribute improved compatibility between the thermoplastic polyesters and the polyamides or polyolefins, permitting the blending of these polymers without detracting from the mechanical or thermal properties of the individual polymers.
摘要:
A composition comprises a polyalkylene terephthalate and/or polyester thereof, a free triglyceride, a dendrimer, and optionally, an epoxy component. The composition is used to prepare a thermoplastic polymer. The composition and the thermoplastic polymer may be used to form an article having an improved hydrolysis resistance and an improved melt viscosity. The article may be useful for automotive, electrical, household, and industrial applications. A method of preparing the thermoplastic polymer is also disclosed.
摘要:
A moldable polyblend of an aromatic polycarbonate, a polyester of an aromatic dicarboxylic acid, an elastomeric rubber, and a polylactone, which polylactone is present within the range of from about 1.0 to about 10 weight % of the polyblend.