The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2006
Filed:
Feb. 28, 2005
Anton Heller, Simbach, DE;
Johann Bindl, Burghausen, DE;
Anton Heller, Simbach, DE;
Johann Bindl, Burghausen, DE;
Wacker Chemie AG, Munich, DE;
Abstract
A process for preparing amino-functional organopolysiloxanes comprising (i) mixing aminosilanes of the general formulaRQSi(OR), where R and Rare hydrogen or optionally substituted hydrocarbyl, a is 0, 1 or 2, b is 1, 2 or 3, and a+b is ≦3, Q is —R—[NR(CH)]N(R), where Ris a hydrocarbyl diradical and Ris hydrogen, hydrocarbyl, or acyl, e is 0, 1, 2, 3 or 4, n is 2, 3, 4, 5 or 6, with organosilicon compounds selected from siloxanes comprising units or silanes RSi(OR), where c is 0, 1, 2 or 3, d is 0, 1 or 2, f is 1, 2 or 3, with the proviso that d+f is ≦3, basic catalysts selected from alkali metal hydroxides, alcoholates and siloxanolates, and optionally, alcohols H—[O(CHR)]OR, where Rand Rare hydrogen or hydrocarbyl, p is 2, 3 or 4, and m is 0 or an integer from 1 to 100, (ii) reacting by heating to 70–100° C., and (iii) subsequently, neutralizing the basic catalysts by addition of neutralizing agents which form salts which are soluble in the amino-functional organopolysiloxanes thus obtained.