Solid polyvinyl ester and poly(meth)acrylate resins with high polydispersity
US7888443B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Nov 24, 2006 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Sep 2, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/1808
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyvinyl esters in the form of solid resins are obtained by free-radically initiated suspension polymerization, characterized in that the solid resin for a weight-average molecular weight Mw of <300,000 has a polydispersity PD of ≧5 and for a weight-average molecular weight Mw of 300,000 to 1,500,000 has a polydispersity PD of ≧10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.