Patent · US Expired

Adhesive repellent coatings and substrates coated therewith

US4208504A · kind A · utility

7Cited by

3References

6Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Friedrich Hockemeyer · Burghausen, DE
Wolfgang Hechtl · Burghausen, DE
Heinrich Marwitz · Burghausen, DE
Paul Hittmair · Burghausen, DE

Key dates

Filing date	Oct 12, 1978
Grant date	Jun 17, 1980
Priority date	—
Expiry date	Oct 12, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31663
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Coating compositions which impart adhesive repellent or non-adherent properties to substrates coated therewith comprising (1) vinyl endblocked diorganopolysiloxanes having an average viscosity in excess of 10.sup.6 cP at 25.degree. C. in which from 3 to 30 mole percent of the nonterminal siloxane units are diphenylsiloxane units and at least 50 mole percent of the remaining organic radicals on the siloxane units are methyl radicals, (2) organopolysiloxanes having at least 3 Si-bonded hydrogen atoms per molecule, (3) catalysts which promote the addition of Si-bonded hydrogen atoms to the vinyl groups and (4) an inert organic solvent. These coating compositions may be applied to cellulosic materials and other substrates to impart varying degrees of adhesive repellency thereto.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.