Silicone water-based emulsions having improved shelf life
US4609486A · kind A · utility
3Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1985 |
| Grant date | Sep 2, 1986 |
| Priority date | — |
| Expiry date | Feb 25, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/37
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The shelf life of an aqueous, anionic silicone emulsion, which contains an organic tin compound and which forms an elastomer upon removal of the water, is improved by the addition of an additive. The additive is selected from the group consisting of alkyl mercaptan, 8-quinolinol, thioglycolic acid, and salts of thioglycolic acid. Elastomers produced by removing the water from these emulsions, once shelf aged, have more consistent physical properties than do elastomers produced from similar emulsions not containing the additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.