Siloxane-polyether copolymers with unsaturated functionalities, and process for making them
US6103847A · kind A · utility
4Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1998 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | May 21, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/46
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention discloses hydrophilic additives in polysiloxane gels, elastomers and coatings, and novel processes for producing them. The process comprises: PA1 (a) redistributing into polysiloxane-polyether copolymers an unsaturated silane or siloxane, PA1 (b) adding to the mixture of reagents a catalytically effective amount of a basic catalyst; and PA1 (c) heating the reaction mixture to effect reaction. Novel siloxane structures of unsaturated aliphatic modified polyerther siloxane copolymers are also taught.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.