Sulfolanyl-bearing organosilicone polymers
US4049674A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1975 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Jun 30, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/906
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A particular class of sulfolanyloxyalkyl-substituted organosilicone polymers are provided which comprise chemically combined monofunctional siloxy units (M.sub.o) and difunctional siloxy units (D.sub.o) and, for every two moles of M.sub.o, an average of from about two to about 100 silicon-bonded sulfolanyloxyalkyl groups (Q) and an average of from about 2 to about 30 silicon-bonded E.degree. groups where E.degree. is hydrogen or a polyoxyalkylene block (E). When E.degree. is hydrogen, the polymers are sulfolanyloxyalkyl-substituted polyalkylsiloxane hydrides and, when E.degree. is E, the polymers are sulfolanyloxyalkyl-substituted polyalkylsiloxane-polyoxyalkylene copolymers. The monofunctional siloxy units encompassed by M.sub.o have at least two alkyls bonded to the respective silicon atoms thereof and the difunctional siloxy units encompassed by D.sub.o have at least one alkyl bonded to the respective silicon atoms thereof, the remaining group bonded to silicon of said M.sub.o and D.sub.o units being alkyl, Q or E.degree.. The sulfolanyloxyalkyl-modified polyalkylsiloxane hydrides are especially useful as hydrosilation and condensation agents such as in forming the corresponding…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.