Aqueous silicone/(CO) polymer dispersions crosslinkable into elastomeric state
US5721026A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1994 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | May 20, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3167
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Aqueous silicone dispersions crosslinkable into elastomeric state on removal of water therefrom under ambient conditions, well adapted, e.g., for the production of elastomeric silicone seals in the construction industry, include an oil-in-water base emulsion (A) of an .alpha.,.omega.-(dihydroxy) polydiorganosiloxane stabilized with at least one anionic or nonionic surface-active agent, or mixture thereof, (B) an aqueous latex of an organic (co)polymer having a particle size ranging from 0.01 to 0.5 .mu.m and a solids content ranging from 20% to 70% by weight, (C) an effective crosslinking amount of at least one crosslinking agent, (D) an effective amount of at least one nonsiliceous filler material, and (E), optionally, a catalytically effective amount of a metal curing catalyst, such aqueous dispersions further having a solids content of at least 40% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.