Method for preparation of epoxysilicone compounds and allyl-terminated silicone compounds
US4788268A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | May 5, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/306
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Epoxysilicone compounds are prepared by first reacting a dibromobenzene compound with magnesium in anhydrous ether solvent to form a Grignard reagent and subsequently reacting the Grignard reagent with allyl bromide to form a (bromophenyl)propene compound. Next, the (bromophenyl)propene compound is converted to the corresponding Grignard reagent, which is then reacted with a compound of the formula I below ##STR1## where n=1 to 6, PA0 R.sub.1 and R.sub.2 are each chosen from the group consisting of a C.sub.1 to C.sub.4 alkyl group, a substituted aryl group, and an unsubstituted aryl group. in tetrahydrofuran solvent to form an allyl-terminated silicone compound of formula II below ##STR2## Finally, the allyl-terminated silicone compound is reacted with a chosen epoxidizing agent to form the epoxysilicone compound of formula III below. ##STR3##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.