Back to results
US 2013/0280201 A1Published application
Fully acylated amino-functional organopolysiloxanes
AssigneeWacker Chemie AG
InventorsChristof Brehm, Gerhard Beer, Markus Merget
Life of this patent
Estimating the term…
Abstract
Fully acylated hydroxyl-terminated organopolysiloxanes bearing pendant aminoalkyl groups are easily prepared by reacting a hydroxyl-terminated, aminoalkyl organopolysiloxane with a carboxylic anhydride in stoichiometric amount relative to amino groups, in the presence of at least one emulsifier.
Claims12
-8. (canceled)
A hydroxy-terminated organopolysiloxane of the formula (1),
- where
- R is a monovalent unsubstituted or halogen-substituted hydrocarbon radical having 1 to 20 carbon atoms,
- R1 is a radical R, —OR4 or —OH,
- R4 is an alkyl radical having 1 to 6 carbon atoms,
- G is a group of the formula (2),
- where
- R2, R3 are divalent hydrocarbon radicals having 1 to 6 carbon atoms, where nonadjacent —CH2 units are optionally replaced by units —C(═O)—, —O— and —S—,
- A is R5—C(═O)—,
- R5 is an alkyl radical having 1 to 20 carbon atoms and
- a is an integer from 100 to 1500 and
- b is an integer of at least 1.
8 more elements
Dependencies are inferred from the claim text.