Polyvinyl alcohols and polyvinyl acetals containing silane
US7368515B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Jul 17, 2003 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | Aug 1, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F230/085
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to polyvinyl alcohols and polyvinyl acetals which contain silane and can be obtained by means of a) radical polymerization of at least one vinyl ester of unbranched or branched alkyl carboxylic acids comprising between 1 and 18 C atoms, in the presence of aldehydes containing silane or the hemiacetals or full acetals thereof, b) saponification of the vinyl ester polymers obtained thereby, and optionally c) acetalation of the partially saponified or fully saponified vinyl ester polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.