Polysiloxane urethane compounds and adhesive compositions, and method of making and using the same
US4684538A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1986 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Feb 21, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Silicone urethane compounds, e.g., a polysiloxane urethane (meth)acrylate, obtained as a reaction product of a polysiloxane carbinol, a polyisocyanate, and a polyfunctional compound having at least one functional group which is reactive with an isocyanate group of the polyisocyanate and after reaction therewith provides an ethylenic functional group in the reaction product. The polysiloxane carbinol has a molecular weight of from about 5,000 to about 50,000 and has R'OH end groups wherein R' is linear C.sub.4 -C.sub.20 alkylene. Such carbinol may be obtained as a reaction product of the corresponding hydride-terminated polysiloxane and a linear C.sub.4 -C.sub.20 .omega.-alkenyl alcohol. The hydride-terminated polysiloxane in turn may be obtained as a reaction product of either (i) the corresponding silanol of molecular weight at least 10,000 and a hydridosilane having one or more hydrolyzable groups attached to the silicon atom, or (ii) a cyclosiloxane and a 1,3-dihydrido disiloxane. The disclosed compounds may be utilized in adhesive compositions for substrates including bonding surfaces such as glass, and polymers and copolymers of ethylenically unsaturated monomers. The bonding …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.