Silicone release coatings
Abstract
Abstract Abrasion resistant coatings for paper and other substrates are prepared by admixing in an organic solvent, (a) 100 parts by weight of a substantially linear diorganopolysiloxane having methyl radicals as at least 80 percent of the organic substitutes on silicon, the remaining organic substituents being hydrocarbyl radicals of up to 18 carbon atoms, the terminal groups on the siloxane being hydrocarbyl, hydroxyl or alkoxyl radicals, (b) 1.5 to 15 parts by weight of alkylhydrogenpolysiloxane having a molecular weight not exceeding about 5,000, (c) 3 to 34 parts by weight of tin acylate, (d) 2 to 8 parts by weight of an aminated organopolysiloxane of the general formula R3SiO(CH3R''SiO)x(CH3XSiO)y(R''''2SiO)zSiR3 where R and R'''' are hydrocarbyl radicals, R'' is an alkoxy or alkoxyalkoxy radical of less than six carbon atoms, X is -R''''''NQH where R'''''' is an alkylene radical of three to 10 carbon atoms, Q is a hydrogen atom, trihydrocarbylisilyl radical or a hydrocarbyl radical of less than seven carbon atoms, X is 15 to 95, y is 2 to 25, z is up to 10 percent of the sum of x + y and the sum of x + y + z is 20 to 100.
Inventors
- 👤 Kenneth G Cooper
- 👤 Herbert T Cooper
- 👤 Colin M Rowland
Bibliographic Details
Claims Analysis
Total Claims: 6References Cited (Backward Citations)
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