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:
Apr. 25, 2000
Filed:
Nov. 15, 1994
Rudolf Braun, Kastl, DE;
Karl Braunsperger, Burghausen, DE;
Herbert Sollradl, Emmerting, DE;
Stefan Oberneder, Burghausen, DE;
Robert Braunsperger, Burghausen, DE;
Wacker-Chemie GmbH, Munchen, DE;
Abstract
Aqueous dispersions of organopolysiloxanes comprising (A) an organopolysiloxane containing groups which are capable of condensation, (B) a condensation catalyst, (C) an organopolysiloxane resin which is at least partly soluble in organopolysiloxane (A) when present in amounts of up to 50% by weight based on the weight of (A), (D) a compound containing basic nitrogen and (E) polyvinyl alcohol. The aqueous dispersions are prepared by dissolving the organopolysiloxane resin (C) in the organopolysiloxane (A) and then emulsifying the solution with polyvinyl alcohol (E) and water. The stable aqueous dispersions of the present invention cure to form transparent films.