초록 ▼

What is disclosed are organopolysiloxane release coatings which are curable on a substrate and which consist of a base siloxane copolymer containing CH3SiO3/2 units; C6H5SiO3/2 units, C6H5(CH3)SiO units and (C6H5)2SiO units; CH3SiO3/2; a fluid polysiloxane, and a curing agent. They are especially us

What is disclosed are organopolysiloxane release coatings which are curable on a substrate and which consist of a base siloxane copolymer containing CH3SiO3/2 units; C6H5SiO3/2 units, C6H5(CH3)SiO units and (C6H5)2SiO units; CH3SiO3/2; a fluid polysiloxane, and a curing agent. They are especially useful on commercial and household cookware and bakeware.

대표청구항 ▼

An article comprising a solid substrate coated with a curable composition of matter comprising (A) 100 parts by weight of a hydroxyfunctional polysiloxane resin copolymer containing CH3SiO3/2 units, C6H5SiO3/2 units, (C6H5)2SiO units and C6H5(CH3)SiO units wherein there is present 0.5 to 5 weight pe

An article comprising a solid substrate coated with a curable composition of matter comprising (A) 100 parts by weight of a hydroxyfunctional polysiloxane resin copolymer containing CH3SiO3/2 units, C6H5SiO3/2 units, (C6H5)2SiO units and C6H5(CH3)SiO units wherein there is present 0.5 to 5 weight percent hydroxy radicals attached to silicon atoms, the organic group to silicon ratio is from 0.8 to 1.4 and the C6H5－to silicon ratio is from 0.35 to 0.85; (B) from 4 to 240 parts by weight, based on 100 parts of (A), of CH3SiO3/2; (C) from 0.2 to 6 parts by weight, based on 100 parts of (A), of a fluid polysiloxane having the formula (RR′R″Si)2O[(CH3)2SiO]x, wherein x has a value of from 250 to 850, R is OH or CH3－and R′and R″are CH3－, wherein there is present in component (C), less than fifteen percent by weight of (CH3)3SiO units, (D) from 0.48 to 6 parts by weight, based on 100 parts of (A), of a curing agent.