Patent ID: 11879036
Assignee: CYTEC INDUSTRIES INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 2:
3. The method according to claim 1,
wherein said PEKKS polymer comprises:
at least one recurring unit (RM*PEKK) of general formula -[Mm-O—]—; and
at least one recurring unit (RP*PEKK) of general formula -[Mp-O—]—;

wherein Mm and Mp are represented by formulae (3) and (4), respectively;, wherein
each of R1 and R2 is independently selected from the group consisting of 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; and
each of i and j is independently selected from 0 or an integer from 1 to 4;
to provide a mixture comprising at least one PEKKS polymer comprising
at least one recurring unit (RM*PEKK) of general formula -[Mm-O—]—; and
at least one recurring unit (RP*PEKK) of general formula -[Mp-O—]—;

said PEKK polymer being characterized by
%[F]>45 (μeq/g)/(g/10 min)0.29 and
T/I ratio greater than 61/39.