Cross-linking of modified engineering thermoplastics
OwnerWerner Schnurnberger, Jochen Kerres +1inventors
InventorsWerner Schnurnberger, Jochen Kerres, Wei Cui
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Abstract
The present invention pertains to a process for the cross-linking of modified engineering thermoplastics, in particular, of polymeric sulfinic acids or sulfinic acid salts. In particular, the invention pertains to a process for the preparation of cross-linked polymers, characterized in that solutions of polymeric sulfinic acids or sulfinic acid salts (—SO2Me), optionally in the presence of organic di- or oligohalogeno compounds [R(Hal)x], are freed from solvent and cross-linked to polymers, wherein Me stands for a monovalent or polyvalent metal cation; R stands for an optionally substituted alkyl or aryl residue containing from 1 to 20 carbon atoms; and Hal stands for F, Cl, Br or I.
Claims8
A covalently cross-linked polymer, covalently cross-linked polymer blend or covalently cross-linked polymer membrane comprising polymers containing sulfinate groups, the sulfinate groups having a formula SO2Me, wherein Me is selected from the group consisting of H, Li, Na, K, Cs, metal cations and ammonium ions,
- the covalently cross-linked polymer having a general formula of
- wherein substituted or unsubstituted R is selected from the group consisting of
- wherein x is 1 to 20;
- R1 is H, CnH2n+1, or CnF2n+1, wherein n is 1 to 20;
- and
A covalently cross-linked polymer, covalently cross-linked polymer blend or covalently cross-linked polymer membrane comprising covalently cross-linked polymers having a general formula of
- wherein substituted or unsubstituted R is selected from the group consisting of
- wherein x is 1 to 20;
- R1 is H, CnH2n+1, or CnF2n+1, wherein n is 1 to 20;
- and
Dependencies are inferred from the claim text.