Method for silalactone preparation and use
US4604478A · kind A · utility
4Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1985 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | May 17, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/60
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Carboxyalkyl-substituted organopolysiloxanes are prepared by hydrolysis of a silalactone composition having the formula ##STR1## where n has an average value greater than zero, R and Q are hydrocarbon and X is Cl or Br. Silicon-containing compounds having the formula R.sub.a Z.sub.b SiO.sub.(4-a-b)/2, where Z is a hydrolyzable radical, can be cohydrolyzed therewith. The silalactone composition is prepared by gently heating a mixture of an ester having the formula X.sub.2 R SiQCO.sub.2 R' and a catalyst, such as N,N-dimethylbenzylamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.