摘要:
The polycarbonate resin composition according to the present invention comprises: (A) 5 to 95 wt % of aromatic polycarbonate; (B) 5 to 90 wt % of siloxane-based polycarbonate; and (C) 0 to 5 wt % of syndiotactic polystyrene, and has excellent flowability, injection moldability, impact strength, chemical resistance, and transparency.
摘要:
본 발명에 따른 폴리카보네이트 수지 조성물은 (A) 방향족 폴리카보네이트 5 중량% 이상 95 중량% 이하, (B) 실록산계 폴리카보네이트 5 중량% 이상 90 중량% 이하 및 (C) 신디오탁틱 폴리스티렌 0 중량% 이상 5 중량% 이하를 포함하며, 유동성, 사출성형성, 충격강도, 내화학성 및 투명성이 모두 우수하다.
摘要:
A copolycarbonate composition is provided comprising a blend of a polycarbonate-polysiloxane copolymer and a terephthalate polymer. The blend has a combination of good melt volume rate, good fatigue resistance, and high ductility at low temperatures.
摘要:
Embodiments of the present invention provide various multipolymers and permselective membranes for use with biosensors and other implantable medical devices and prostheses. Embodiments of the present invention may provide structural strength and integrity, and further may control the influx of glucose, oxygen and/or water. Embodiments of the present invention may, for example, minimize or reduce the influx of glucose by minimizing the percentage of hydrophilic segments, which in turn minimizes the percentage of water uptake and the degree of glucose transport.
摘要:
A thermoplastic composition is disclosed, comprising a polymer component comprising a polysiloxane-polycarbonate copolymer comprising siloxane units of the formula (a), wherein each occurrence of R is the same or different and is independently a C 1-13 monovalent organic group; the average value of E is 4 to 60; and carbonate units of the formula (b), wherein at least about 60 percent of the total number of R 1 groups are a divalent C 6-36 aromatic organic group, and the balance thereof are C 1-36 aliphatic, C 5-36 alicyclic, or C 6-36 aromatic organic groups; and 0.03 to 5 weight percent, based on the total weight of the polymer component, of a polymeric compound comprising at least two epoxy groups, wherein the polymeric compound has a weight average molecular weight of 1,500 to 18,000 Daltons.
摘要:
A copolymer composition comprises a polysiloxane block of Formula XIX or XXII, having 4 to 50 siloxane units, and a polyarylate-polycarbonate block consisting essentially of 50 to 99 mol% arylate polyester units and 1 to 50 mol% aromatic carbonate units, wherein 1 to 30 mole percent of the aromatic carbonate units are resorcinol carbonates, and 0 to 35 mol% of the aromatic carbonate units are bisphenol carbonates; wherein the sum of mole percentages of arylate polyester units, and aromatic carbonate units is 100 mol%; the polysiloxane blocks connect to an arylate ester unit, and/or an aromatic carbonate unit; the siloxane units of the polysiloxane block are present at 0.2 to 10 wt% based on weight of the copolymer composition; and a molded article of 3.2 ± 0.12 millimeters thickness and consisting of the copolymer composition has a percent transmittance greater than or equal to 70%, according to ASTM D 1003-00.
摘要翻译:共聚物组合物包含具有4至50个硅氧烷单元的式XIX或XXII的聚硅氧烷嵌段和基本上由50至99mol%芳基化聚酯单元和1至50mol%芳族碳酸酯单元组成的聚芳酯 - 聚碳酸酯嵌段,其中1至 30摩尔%的芳族碳酸酯单元是间苯二酚碳酸酯,0-35摩尔%的芳族碳酸酯单元是双酚碳酸酯; 其中芳基化聚酯单元和芳族碳酸酯单元的摩尔百分比之和为100摩尔%。 聚硅氧烷嵌段连接到芳基酯单元和/或芳族碳酸酯单元; 聚硅氧烷嵌段的硅氧烷单元以基于共聚物组合物的重量计为0.2-10重量%存在; 并且根据ASTM D 1003-00,由共聚物组合物组成的3.2±0.12毫米厚度的模制品具有百分比透射率大于或等于70%。
摘要:
A method is provided for making siloxane polycarbonate copolymers and blends of other polycarbonates with such copolymers wherein the copolymers and blends have excellent transparency and physical characteristic.
摘要:
A method is provided for making siloxane polycarbonate copolymers and blends of other polycarbonates with such copolymers wherein the copolymers and blends have excellent transparency and physical characteristic.
摘要:
An aromatic copolycarbonate obtained by heating an aromatic dihydroxy compound together with a polyorganosiloxane and at least one member selected among aliphatic polyhydric alcohols and with a carbonic diester to conduct prepolymerization and polymerizing the resultant prepolymer in a solid state or swollen solid state using a quaternary phosphonium salt as a catalyst. The aromatic copolycarbonate is reduced in the contents of residual monomers, acetone-soluble components (low-molecular components), and cyclic oligomers and has a small proportion of terminal hydroxyl groups.