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:
Sep. 25, 1984
Filed:
Feb. 09, 1984
Friedrich Hockemeyer, Emmerting, DE;
Gerhard Preiner, Burghausen, DE;
Wacker-Chemie GmbH, Munich, DE;
Abstract
Coatings which have a predetermined degree of adhesive-repellency are prepared by applying to surfaces which are to be rendered adhesive-repellent an organopolysiloxane having Si-bonded hydrogen and an aliphatic multiple bond in the same molecule and a catalyst which promotes the addition of Si-bonded hydrogen to an aliphatic multiple bond, and thereafter crosslinking the organopolysiloxane by the addition of Si-bonded hydrogen to an aliphatic multiple bond. The organopolysiloxane having both an aliphatic multiple bond and Si-bonded hydrogen in the same molecule, has a viscosity of at least 300 mPa.s at 25.degree. C. The adhesive-repellency of the coated substrate is at least partially dependent on the ratio of Si-bonded hydrogen to the aliphatic multiple bond, i.e., the higher the ratio of Si-bonded hydrogen to the aliphatic multiple bond, the lower the adhesive-repellency. Organic compounds containing at least one grouping of the formula ##STR1## in an amount to retard or prevent the addition of Si-bonded hydrogen to an aliphatic multiple bond at room temperature, are to be excluded from the adhesive-repellent compositions of this invention.