Carboxy-ester lactone polymer neutralizing-timing layer for color transfer assemblages
US4423141A · kind A · utility
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3Claims
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Key dates
| Filing date | Dec 10, 1982 |
| Grant date | Dec 27, 1983 |
| Priority date | — |
| Expiry date | Dec 10, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photographic assemblages, elements, receiving elements and cover sheets are described employing a single neutralizing-timing layer consisting essentially of a carboxy-ester-lactone polymer having the following recurring units: ##STR1## wherein R is alkyl having from 1 to about 12 carbon atoms or aralkyl having from 7 to about 12 carbon atoms; PA0 R.sup.1 and R.sup.2 are each independently hydrogen or methyl; PA0 x is about 1 to about 15 mole %; and PA0 y is about 85 to about 99 mole %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.