摘要:
Disclosed is a thermoplastic composition including (A) a polyamide resin independently selected from the group consisting of Group (I) Polyamides having a melting point of at least 260° C., and comprising (a) greater than 95 mole percent semiaromatic repeat units and (b) less than 5 mole percent aliphatic repeat units; (B) 0 to 60 weight percent of one or more reinforcement agents; and(C) 0 to 50 weight percent of one or more a polymeric tougheners; wherein the weight percentages are based on the total weight of said thermoplastic composition; and wherein said polyamide resin has at least 50 meq/Kg of acid ends.
摘要:
Multi-layered co-extruded tubes are provided that include an outer layer including a first semiaromatic semicrystalline polyamide having a melt temperature of about 240° C. to 280° C., and a thermal stabilizer; and an inner layer including a second semiaromatic semicrystalline polyamide having a glass transition equal to or greater than 100° C.
摘要:
Multi-layered co-extruded tubes are provided that include an outer layer including a first semiaromatic semicrystalline polyamide having a melt temperature of about 240° C. to 280° C., and a thermal stabilizer; and an inner layer including a second semiaromatic semicrystalline polyamide having a glass transition equal to or greater than 100° C.
摘要:
Multi-layered co-extruded tubes are provided that include an outer layer including a first semiaromatic semicrystalline polyamide having a melt temperature of about 240° C. to 280° C., and a thermal stabilizer; and an inner layer including a second semiaromatic semicrystalline polyamide having a glass transition equal to or greater than 100° C.
摘要:
Disclosed is a monolayer tube comprising a melt-blended thermoplastic composition consisting essentially of (A) a polyamide resin selected from the group consisting of PA 614, PA 616, PA 618 and blends of these; and optionally: (B) one or more polymeric toughener(s); (C) one or more plasticizer(s); and (D) one or more functional additive(s); wherein the weight percent of (A), (B), (C), and (D) are based on the total weight of the melt-blended thermoplastic composition.
摘要:
Disclosed is a thermoplastic composition including (A) a polyamide resin independently selected from the group consisting of Group (IV) Polyamides comprising (aa) about 50 to about 95 mole percent semiaromatic repeat and (bb) about 5 to about 50 mole percent aliphatic repeat units; and Group (VI) Polyamides having no melting point, (B) about 0.25 to about 15 weight percent of one or more polyhydric alcohols having more than two hydroxyl groups and a having a number average molecular weight (Mn) of less than 2000; (C) 0 to 60 weight percent of one or more reinforcement agents; and (D) 0 to 50 weight percent of a polymeric toughener wherein said polyamide resin has at least about 70 meq/Kg of amine ends.
摘要:
Disclosed is a polyamide composition including at least one semi-aromatic copolyamide, said semi-aromatic copolyamide consisting essentially of about 25 to about 55 mole percent repeat units of the formula —C(O)(CH2)mC(O)NHCH2ArCH2NH— (I) and about 45 to about 75 mole percent repeat units of the formula —C(O)(CH2)mC(O)NH(CH2)2NH—(II) wherein m is 8, 10, and/or 12, n is 6, 10 and/or 12 and Ar is a meta-substituted benzene ring; and said polyamide has a melting point equal to or less than 225° C.; and 0.1 to 15 weight percent of one or more polyhydric alcohols having more than two hydroxyl groups and having a number average molecular weight (Mn) of less than 2000. Also disclosed are molded or extruded articles including the polyamide composition.
摘要:
Disclosed is a thermoplastic composition including A) a polyamide resin having a melting point and/or glass transition; B) 0.25 to 20 weight percent of at least one polyhydric polymer; C) 0 to 3 weight percent of one or more co-stabilizer(s); and, D) 0 to about 60 weight percent of one or more reinforcement agents, wherein said polyamide resin is selected from the group consisting of Group (III) Polyamides having said melting point of at least 210° C., and including about 20 to about 35 mole percent semiaromatic repeat units, Group (IV) Polyamides comprising about 50 to about 95 mole percent semiaromatic repeat units, Group (V) Polyamides having said melting point of at least 260° C., and including greater than 95 mole percent semiaromatic repeat units, and Group (VI) Polyamides having no melting point; with the proviso that when less than 10 weight percent said one or more reinforcement agent(s) is present, at least 0.1 weight % of said one or more co-stabilizer(s) also is present.