Positive image-forming method using 4-methyl-1-pentene polymer
US4623610A · kind A · utility
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6Claims
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Key dates
| Filing date | Feb 26, 1982 |
| Grant date | Nov 18, 1986 |
| Priority date | — |
| Expiry date | Feb 26, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/108
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A positive image-forming material consisting of a methylpentene homopolymer or a methylpentene copolymer containing 50 mole percent or more of methylpentene units which has an intrinsic viscosity of not less than 0.2 dl/g as measured in decalin at 135.degree. C. and being soluble in not more than 100 times by weight of cyclohexene at 25.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.