Blend of polyarylether ketone copolymer
AssigneeSyensqo Specialty Polymers USA, LLC
InventorsJason Rich, Mohammad Jamal El-Hibri
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Abstract
The invention pertains to a polymer blend based on PEDEK-PEEK copolymer, which, thanks to the predominance of PEDEK-type units in the copolymer (PEDEK-PEEK), and to the blending with a polyphenylsulfone polymer (PPSU), is effective in delivering superior combination of improved strength and modulus at elevated temperatures and improved ductility, and which is endowed with beneficial partial miscibility behaviour, which is unexpected and advantageous, both for retaining similar high temperature resistance of polymer (PPSU) component, but also for avoiding phase separation and/or reduction in crystallization rate and loss of high temperature performances.
Claims20
A composition (C) comprising:
- at least one polyaryl ether ketone copolymer, copolymer (PEDEK-PEEK), comprising:
- recurring units (RPEEK) of formula (I):
- and
- recurring units (RPEDEK) of formula (II):
- wherein in above formulae (I) and (II), each of R′ and R″, equal to or different from each other, is independently selected at each occurrence from a C1-C12 group optionally comprising one or more than one heteroatoms;
- sulfonic acid and sulfonate groups;
- phosphonic acid and phosphonate groups;
- amine and quaternary ammonium groups;
- each of j′ and k″, equal to or different from each other, is independently selected at each occurrence from 0 and an integer of 1 to 4;
- wherein the said recurring units are comprised in a molar ratio (RPEDEK):(RPEEK) of 70:30 to 80:20, and
- at least one sulfone polymer, polymer (SP), selected from the group consisting of:
- (PS-1) polyphenylsulfone polymers, polymer (PPSU), comprising more than 50 mol %, with respect to all recurring units, of recurring units (RPPSU) of formula (P-1):
- wherein
- each RPPSU, equal to or different from each other at each instance, is independently selected from the group consisting of halogen, alkyl, alkenyl, alkynyl, aryl, ether, thioether, carboxylic acid, ester, amide, imide, alkali or alkaline earth metal sulfonate, alkyl sulfonate, alkali or alkaline earth metal phosphonate, alkyl phosphonate, amine and quaternary ammonium;
- each d, equal to or different from each other at each instance, is independently selected from 0, 1, 2, 3 and 4;
- and
- (PS-2) polyethersulfone polymers, polymer (PESU), comprising more than 50 mol %, with respect to all recurring units, of recurring units (RPESU) of formula (P-2):
- wherein
- each RPESU, equal to or different from each other at each instance, is independently selected from the group consisting of halogen, alkyl, alkenyl, alkynyl, aryl, ether, thioether, carboxylic acid, ester, amide, imide, alkali or alkaline earth metal sulfonate, alkyl sulfonate, alkali or alkaline earth metal phosphonate, alkyl phosphonate, amine and quaternary ammonium;
- each e, equal to or different from each other at each instance, is independently selected from 0, 1, 2, 3 and 4;
- wherein said composition (C) comprises copolymer (PEDEK-PEEK) and polymer (SP) in weight ratios of 10/90 to 90/10.
Dependencies are inferred from the claim text.