Polyarylamine polymers
US5155200A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1990 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Apr 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/142
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polyarylamine polymer represented by formula ##STR1## wherein: n is between about 5 and about 5,000, or 0 if p>0, PA0 o is between about 0 and about 5,000, or is 0 if p>0 or n=0, PA0 p is between about 2 and about 100, or is 0 if n>0, PA0 X' and X" are indendently selected from a group having bifunctional linkages, PA0 Q is a divalent group derived from certain hydroxy terminated arylamine reactants, PA0 Q' is a divalent group derived from a hydroxy terminated polyarylamine containing the group defined for Q and having a weight average molecular weight between about 1000 and about 80,000 and the weight average molecular weight of the polyarylamine polymer is between about 10,000 and about 1,000,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.