Abstract:
Thermoplastic compositions having miscible and compatible immiscible polymer blends are disclosed. The miscible polymer blends have a single glass transition temperature. The compatible polymer blends have two glass transition temperatures.
Abstract:
Thermoplastic compositions having miscible and compatible immiscible polymer blends are disclosed. The miscible polymer blends have a single glass transition temperature. The compatible polymer blends have two glass transition temperatures.
Abstract:
Processes and compositions for cleaning mixing devices are disclosed that improve the production and quality of thermoplastic polymer resins subsequently produced in the mixing device, while reducing the time needed for cleaning and/or change over. A cleaning mixture comprising polymeric resin pellets having a Rockwell R hardness of 85 to 140 externally coated with an aqueous solution containing sulfonate salts, alkyl aryl sulfonate salts, alkyl sulfate salts, C6 to C36 carboxylic acid salts, or mixtures thereof, is used to purge the mixing device. The surfactant salt is present in the aqueous solution at 0.2 to 30 wt % of the solution, the aqueous solution having a pH of 6.0 to 9.0.
Abstract:
A bisphenol polyether oligomer composition comprising greater than 90 wt. % of an oligomer of the formula wherein Ra, Rb, and Rc are each independently a C1-12 alkyl, C1-12 alkoxy, or C1-12 alkylarylene, each Xa is independently a single bond, —O—, —S—, —S(O)—, —S(O)2—, —C(O)—, or a C1-18 organic group, G is H or p, q, and t are each independently integers of 0 to 4, n is 1 to 10; and wherein the bisphenol polyether oligomer composition comprises: a total halide content of less than 1000 ppm, less than 1000 ppm of —CH2OH groups, less than 5 wt. % cyclic oligomers, and less than 100 ppm of a bisphenol of the formula wherein Ra, Rb, Xa, p and q are the same as in the oligomer.
Abstract:
A polymer composition comprising a mixture of a) a first resin component comprising a polyaryl ether ketone, a polyaryl ketone, a polyether ketone, a polyether ether ketone, or a combination of two or more of the foregoing, and b) a second resin component comprising a specific type of copolycarbonate, wherein the mixture has at least two glass transition temperatures, as measured by ASTM method D5418, wherein the first glass transition temperature is from 120 to 160° C. and the second glass transition temperature is from 170 to 280° C. is disclosed. The compositions have improved properties such as improved load bearing capability at high temperature, better impact strength, and a high crystallization temperature.
Abstract:
Processes and compositions for cleaning mixing devices are disclosed that improve the production and quality of polycarbonate resins subsequently produced in the mixing device, while reducing the time needed for cleaning and/or change over. A cleaning mixture comprising polycarbonate resin pellets coated with an alkyl aryl sulfonate salt aqueous solution are used to purge the mixing device.
Abstract:
Disclosed herein is a composition comprising a polyphenylene ether sulfone and a resorcinol based silicone aryl polyester carbonate copolymer wherein greater than or equal to 50 mol % of copolymer repeating units are ester units derived from resorcinol, based on the total molar amount of all repeating units in the polymer and wherein the blend has less than 1 weight percent polycarbonate, based on the total weight of the composition, has FAR 25.853 peak heat release of less than 60 KW/m2 and time to peak heat release of greater than or equal to 120 seconds.
Abstract translation:本文公开了包含聚苯醚砜和间苯二酚基硅酮芳基聚酯碳酸酯共聚物的组合物,其中大于或等于50摩尔%的共聚物重复单元是源自间苯二酚的酯单元,基于所有重复单元的总摩尔量 聚合物,其中共混物具有小于1重量%的聚碳酸酯,基于组合物的总重量,具有小于60KW / m 2的FAR 25.853峰值热释放和大于或等于120秒的时间到峰值热释放 。
Abstract:
Disclosed herein is a composition comprising a polyphenylene ether sulfone and a resorcinol based silicone aryl polyester carbonate copolymer wherein greater than or equal to 50 mol % of copolymer repeating units are ester units derived from resorcinol, based on the total molar amount of all repeating units in the polymer and wherein the blend has less than 1 weight percent polycarbonate, based on the total weight of the composition, has FAR 25.853 peak heat release of less than 60 KW/m2 and time to peak heat release of greater than or equal to 120 seconds.
Abstract translation:本文公开了包含聚苯醚砜和间苯二酚基硅酮芳基聚酯碳酸酯共聚物的组合物,其中大于或等于50摩尔%的共聚物重复单元是源自间苯二酚的酯单元,基于所有重复单元的总摩尔量 聚合物,其中共混物具有小于1重量%的聚碳酸酯,基于组合物的总重量,具有小于60KW / m 2的FAR 25.853峰值热释放和大于或等于120秒的时间到峰值热释放 。
Abstract:
Processes and compositions for cleaning mixing devices are disclosed that improve the production and quality of polycarbonate resins subsequently produced in the mixing device, while reducing the time needed for cleaning and/or change over. A cleaning mixture comprising polycarbonate resin pellets coated with an alkyl aryl sulfonate salt aqueous solution are used to purge the mixing device.