Graft copolymers of para-alkylstyrene/isoolefin copolymers
US5548029A · kind A · utility
25Cited by
28References
45Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1995 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Mar 15, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Graft copolymers which are isoolefin/para-alkylstyrene copolymer represented by the formula ##STR1## in which R and R' can be hydrogen, alkyl, and the primary and secondary alkyl halides, "a" ranges from about 14 to about 70,000, "b" ranges from 0 to about 70,000, "c" ranges from 0 to about 70,000, "d" ranges from about 1 to about 70,000, X is a halogen, and Nu is a nucleophilic residue provided by a polymeric nucleophile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.