Copolymer, a manufacturing process therefor and a solution containing thereof
US6433118B1 · kind B1 · utility
1Cited by
0References
29Claims
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Assignee
Inventors
Key dates
| Filing date | Oct 14, 1999 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Oct 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/0392
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention discloses a copolymer comprising structural units represented by formulas (1) to (3): where R1 and R3 are each hydrogen or methyl and R2 is C1-C6 straight or branched unsubstituted alkyl or C1-C6 straight or branched substituted alkyl;wherein a, b and c are 0.05 to 0.7, 0.15 to 0.8 and 0.01 to 0.5, respectively and a+b+c=1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.