Patent GB-954574-A (GB)
Title: Organosilicon compositions and the fabrication of structures therewith
IPC: C07F7/18
Filed: 1962-03-27
Abstract: An organosilicon composition comprises a mixture of (a) at least one acryloxyalkylsilane of the formula CH2<\>CCR.COO(CH2)2Si(OR1)3, wherein R is H or CH3, n is 1,2,3, or 4 and each R1 is an alkyl radical of less than 5 C atoms or an acetyl radical or a radical of the formula -CH2.CH2.OR11 where R11 is an alkyl radica of 1-4 C atoms, and (b) at least one binder which is (1) a water-soluble alcohol having at least 2 OH groups per molecule and a melting point of at least 35 DEG  C., or (2) an aqueous mixture of a film-forming organic resin which is miscible with water and which when dried is converted to a water-immiscible state, or (3) one or more silanes of the formulae (a) SiX4, wherein each X is a methoxy radical or a radical of the formula [O(CH2.CH2.O)mR11] in which m is 1 or 2, and (b) R111ySi(OR1)4-y, wherein y is 1 or 2 and R111 is an alkyl radical of less than 4 C atoms or a phenyl, vinyl, allyl, b -acetoxyethyl or g -acetoxypropyl radical or a radical of the formula <FORM:0954574/C3/1> where z is 2 or 3, or (4) boric acid.  The silanes (a) and their use in conjunction with polymerisable materials having aliphatic unsaturation are described in Specification 949,126. Most of the compositions will be in the form of true solutions, but many will take the form of emulsions or latices.  Since the compositions are usually dissolved in or diluted with water, a second form of the composition may be defined as a mixture of water, a water-soluble hydrolysate of (a) and at least one of the components (b). Components (b) disclosed are: (b)(1)-resorcinol, trimethylolethane, neopentyl glycol and polyethylene glycols of average molecular weight of from 1,000 to 9,500; and (b)(2)-aqueous mixtures or latices of polymers or co-polymers of methyl-acrylate and -methacrylate, butadiene, vinylidene chloride, styrene, acrylonitrile, vinyl chloride and chlorovinyl acetate; methacrylate-chromic chloride complexes and a water-soluble trimellitic alkyd resin; these binders are usually used in conjunction with wetting agents (generally cationic-active compounds) as described in U.S.A. Specification 2,951,782.  The (b)(3) components are well known compounds, the epoxy-substituted ones being described in Specification 834,326 and U.S.A.  Specification 2,970,881, and the water-soluble hydrolysates in Specification 954,573. The boric acid (b)(4) can be used per se or be formed in situ by hydrolysis of an alkyl borate or boric oxide. Examples are given.  Uses:  the unhydrolysed or preferably the aqueous mixtures are used for priming siliceous surfaces, such as mica, asbestos, clay, vitreous enamel and ceramics, finely divided silica, and particularly glass in sheet, fibre or shaped forms, to improve their bonding to organic resins containing aliphatic unsaturation, e.g. styrene, the acrylic and methacrylic resins, butadiene-styrene copolymers and polyester resins (i.e esterification products of a -ethylenic dicarboxylic acids and glycols and containing unesterified carboxyl groups) which are usually used in admixture with liquid monomeric unsaturated polymerisable compounds, many examples of which are given; for making glass-fibre laminates (see Division B5); and in the treatment of metal surfaces.  Trimellitic alkyd resins are made from trimellitic acid or anhydride (TMA) and a polyhydric alcohol, e.g. ethylene-, propylene-, butylene- or neopentyl-glycol, and usually a dicarboxylic acid, such as adipic acid, typical formulations disclosed being (in molar quantities): (1) 1 TMA+2 propylene glycol, (2) 5 TMA+11 1, 3-butylene glycol+1 adipic acid, (3) 3 TMA +7.7 ethylene glycol+1 adipic acid, (4) 3 TMA +6.5 propylene glycol+0.5 "Empol" (Registered Trade Mark), and (5) 3 TMA+7 neopentyl glycol+1 adipic acid.  These alkyds are usually solubilised in water by adding a base, e.g. ammonia or di-methylethanolamine, until the acid resin is neutral.ALSO:In making glass fibres, an aqueous composition, which acts both as a binder and lubricant, is applied at the bushing during the drawing of the fine glass filaments.  The composition (used in the form of an aqueous solution, emulsion or latex) comprises a mixture of (A) at least one acryloxy-alkysilane of the formula CH2 = CR. COO(CH2) Si (OR1)3, wherein R is H or CH3, n is 1, 2, 3 or 4 and each R1 is an alkyl radical of 1 to 4 C atoms or an acetyl radical or a radical of the formula -CH2. CH2. OR11, where R11 is an alkyl radical of 1 to 4 C atoms, and (B) at least one binder which is (1) a water-soluble alcohol having at least 2 OH groups per molecule and a melting point of at least 35 DEG C., or (2) an aqueous mixture of a film-forming organic resin which is miscible with water and when dried is converted to a water-immiscible state, or (3) one or more silanes of the formula (a) SiX4, wherein X is a methoxy radical or a radical of the formula [O(CH2. CH2. O)mR111], in which m is 1 or 2, and (b) Ry111Si(OR1)4-y, wherein y is 1 or 2 and R111 is an alkyl radical of 1 to 3 C atoms or a phenyl, vinyl, allyl, b -acetoxyethyl or g -acetoxypropyl radical or a radical for the formula -(CH2)zO. <FORM:0954574/D1-D2/1> , where z is 2 or 3, or (4) boric acid (see Division C3).  In Example (7) heat-cleaned glass roving was passed through a dilute acetic acid solution containing resorcinol and CH2 = C(CH3)COO(CH2)3Si (OCH3)3, and then through a hot air curing tower. Specification 834,326 is referred to.