Star-branched silicone polymers as anti-mist additives for coating applications
US6774201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Nov 15, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Star branched siloxane compounds suitable as anti-mist additives in the coating of flexible supports are made as the reaction product of:Mg′MaMHb−gDcDh′DHd−hTeTi′THf−i and (MjMVikDlDVimTnTVioQp)q,in the presence of a noble metal hydrosilylation catalyst where the ratio between the hydride containing precursor and the vinyl containing precursor is defined by a mathematical relationship between the stoichiometric subscripts of the precursors, (b+d+f−g−h−i)/(((k+m+o)p)q) ranging from 4.59 to 0.25 and where the compound:Mg′MaMHb−gDcDh′DHd−hTeTi′THf−imay be obtained by the following reaction:MaMHbDcDHdTeTHf+&agr;CH2═CHR1→Mg′MaMHb−gDcDh′DHd−hTeTi′THf−I,which compound itself is a star branched siloxane compound useful as an anti-mist additive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.