Terminal cluster vinyl silicones and acrylate cluster silicones therefrom
US4728709A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1986 |
| Grant date | Mar 1, 1988 |
| Priority date | — |
| Expiry date | Mar 10, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S528/901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyorganosiloxane polymer having a structure represented by one of the formulas EQU (AB).sub.m C or [(AB).sub.m ].sub.n SiR.sub.(4-n) where the R groups are the same or different organic groups other than acrylic groups or groups co-curable therewith; A is a linear polyorganosiloxane segment containing between 3 and about 50 siloxane repeat units at least 3 of which are acrylic group containing repeat units represented by the formula ##STR1## where R.sup.1 is lower alkyl, the R.sup.2 groups are the same or different alkylene, alkyleneoxy or alkenylene groups, and y is 0-4; B is a polyorganosiloxane segment represented by the formula ##STR2## where x is an integer of at least 100; C is A or a triorganosilyl group; m is an integer of 1 or more; and n is 3 or 4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.