Patent ID: 11970608
Assignee: SHPP GLOBAL TECHNOLOGIES B.V.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 4:
5. The copolycarbonate composition of claim 1, wherein, in the stabilizer package:
a) the phosphorus-containing acid is H3PO4, H3PO3, H3PO2, a multi-nuclear phosphorus-containing acid such as pyrophosphoric acid, H3P2O7, or a higher analog thereof, or a combination thereof;
b) the ester of the phosphorus-containing acid is a di- or tri-organically-substituted phosphite ester of the formula (RO)3—P, a di- or tri-organically-substituted phosphate ester of the formula (RO)3—P═O, or a combination thereof, wherein each R is independently a monovalent, divalent, or trivalent C5-36 hydrocarbyl group or a halogen provided that at least two R are organic, preferably wherein each R is independently pentaerythrityl, 2,2-ethylidene-bis(4,6-di-tert-butylphenyl), octylphenyl, nonylphenyl, 2,4-di-tertiary-butylphenyl, or fluorine provided that at least two R are organic; and
c) the organosulfonic stabilizer has the formula, , wherein each R7 is independently a C1-30 alkyl, C6-30 aryl, C7-30 alkylarylene, C7-30 arylalkylene, or a polymer unit derived from a C2-32 ethylenically unsaturated aromatic sulfonic acid or its ester, and R8 is hydrogen; or R8 is a C1-30 alkyl; or R8 is a group of the formula —S(═O)2—R7.