- PROCESS FOR MAKING ALLYL SUCCINIC ANHYDRIDE
-
A process for the production of allyl succinic anhydride comprising reacting a mixture of propene with maleic anhydride in the presence of a catalyst comprised of an alkyl tin chloride as provided. The process an be run efficiently at temperatures below about 200°C without and the formation of polymer or decomposition by-products.
- -
-
Page 6-8; 9-10
(2008/06/13)
-
- Synthesis of monosubstituted succinic acids from tert-butylsuccinate
-
We report the preparation and alkylation of the dianion of t-butylsuccinate. This alkylation reaction has proven to be a useful method for the preparation of monosubstituted succinic acids and anhydrides.
- Bergmeier,Ismail
-
p. 1369 - 1371
(2007/10/03)
-
- Organopolysiloxanes having bifunctional terminal siloxane units
-
The present invention relates to the organopolysiloxanes having the formula where R is optionally substituted C1 - to C18 -hydrocarbon radicals, R1 is an optionally substituted C6 - to C15 -hydrocarbon radical having at least one phenyl ring, R2 is a C1 - to C3 -hydrocarbon radical, X is a hydrogen atom or an organic or organosilicon functional group bonded via a divalent, optionally substituted C2 - to C15 -hydrocarbon radical, with one or more methylene units of the hydrocarbon radical being able to be replaced by oxygen atoms bonded on both sides to carbon atoms, a is an integer of at least 1 and b, c, d and e are each 0 or a positive integer, and the sum of a, b, c, d and e is at least 3, and the process for the preparation thereof.
- -
-
-
