Silicone emulsion which provides an elastomeric product and methods for preparation
US4244849A · kind A · utility
32Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1979 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | Aug 6, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31667
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aqueous silicone emulsion is described which provides an elastomeric product upon removal of the water under ambient conditions. The emulsion comprises a continuous water phase and an anionically stabilized dispersed silicone phase which is a graft copolymer of a hydroxyl endblocked polydiorganosiloxane and an alkali metal silicate. The emulsion is formed and maintained in a stable condition by control of the pH within the range of 8.5 to 12 inclusive. In the method of preparing the emulsion, an organic tin compound can be employed to accelerate the formation of the graft copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.