Claims
- 1. A bis(bis-silylalkyl) dicarboxylate ester having the formula ##STR4## wherein R.sup.1 is C.sub.2-6 alkylene, each of R.sup.2 and R.sup.3 is independently C.sub.1-8 alkyl and a is from 1 to 3, said esters being the cis- or trans-isomers or mixtures thereof.
- 2. An ester according to claim 1 which is a maleate.
- 3. An ester according to claim 1 which is a fumarate.
- 4. An ester according to claim 1 wherein R.sup.1 is trimethylene.
- 5. An ester according to claim 4 wherein each R.sup.2 and each R.sub.3 is methyl.
- 6. An ester according to claim 5 wherein a is 3.
- 7. An ester according to claim 6 which is a maleate.
- 8. An ester according to claim 6 which is a fumarate.
Parent Case Info
This application is a division, of application Ser. No. 08/378,692, filed Jan. 26, 1995, U.S. Pat. No. 5,487,948.
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Divisions (1)
|
Number |
Date |
Country |
Parent |
378692 |
Jan 1995 |
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