Polymethylalkylsiloxane emulsions and methods
US5017221A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1989 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Dec 5, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2483/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An emulsion and a mixture including water, at least one surfactant, and a polymethylalkylsiloxane. The polymethylalkylsiloxane has the formula: ##STR1## wherein R is a methyl radical, a is an integer from one to about three thousand, and b is an integer from one to about ten. Also disclosed is a method of rendering a surface repellent to water by treating the surface with an effective amount of the foregoing emulsion. The surface being treated is an organic surface, and can be a rubber surface such as wires, cables, the sidewall of a pneumatic tire, footwear, molded goods, and coated fabrics. The surface can also be a vinyl surface such as flooring, shower curtains, rain coats, automative seat upholstery, residential siding, and piping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.