| 摘要 |
1,172,092. Laminates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 25 Oct., 1967 [31 Oct., 1966], No. 48702/66. Heading B5N. [Also in Division C3] Laminates may be prepared from asbestos fibre mats impregnated with an organosilicon resin composition comprising (A) a resin product of reaction of a silane R n SiY 4-n with a silane R<SP>1</SP> m SiZ 4-m and (B) a resin product of reaction of a silcarbane with a silane R<SP>4</SP> s SiQ 4-s or a partial hydrolysate thereof; in the above Q is OR<SP>5</SP> or NR<SP>6</SP> z , R, R<SP>1</SP>, R<SP>2</SP>, R<SP>4</SP>, R<SP>5</SP> and R<SP>6</SP> are each optionally substituted hydrocarbyl groups and R<SP>4</SP> may be H or halogen and R<SP>6</SP> may be H also; R<SP>3</SP> is a divalent aromatic group; n is 1 or 2; m is 0, 1, or 2, r is 0 or 1; 8 is 0 or 1; Y is a hydroxy or alkoxy group; and Z is an alkoxy or acyloxy groupthe latter when Y is an alkoxy group (see Division C3); the mats being impregnated from solution, stacked and laminated under heat and pressure. |
