Patent GB-961018-A (GB)
Title: Improvements in the treatment of glass textile materials
Inventor: BATTYE ALBERT EDWARD
IPC: C03C25/26
Filed: 1959-07-01
Abstract: Glass fibre textile material, substantially free from any coating, is coated with a water-insoluble resinous inter-reaction product of a water-soluble polyvinyl alcohol and either a polymer of an unsaturated monobasic acid or a copolymer of an unsaturated monobasic acid with a compound capable of being polymerized and containing a single <FORM:0961018/B1-B2/1> group and then, after heating the treated material so as to form a water-insoluble resin e.g. between 100  DEG C, to 250  DEG C., further treating it with a Werner complex compound in which an acids group is co-ordinated with a trivalent nuclear chromium atom, the acids group containing at least 8 carbon atoms e.g. between 12 and 18 carbon atoms.  The polymer or copolymer may be water-soluble.  The polyvinyl alcohol may have at least 75% degree of hydrolysis e.g. at least 85% degree of hydrolysis, and may be present from 0,3 to 3 e.g. 0,6 to 1,8, parts by weight per part by weight of the polymer or copolymar of the unsaturated monobasic acid. The unsaturated monobasic acid may be acrylic, methacrylic or crotonic acid.  Suitable comonomers with the unsaturated monobasic acid are acrylonitrile, methacrylonitrile, styrene, substituted styrene, esters of vinyl alcohol such as vinyl acetate, and esters of acrylic or methacrylic acid.  The material may be treated with an aqueous solution of a mixture of the polyvinyl alcohol and the polymer or copolymer of the unsaturated monobasic acid, the concentration of the solution being from 0,15 to 0,5% by weight.  The material may be dyed or printed after formation of the water-insoluble resin e.g. with a vat dyestuff in the soluble stabilized leuco form.  The Werner complex compound may be stearato chromyl chloride which may be applied from a solution p  having a concentration ranging from 0,25 to 0,75% by weight. The material may be finally dried and heated e.g. at 140-200  DEG C. The solution may include softening agents and also low molecular weight polyhydric alcohols such as glycerol or ethylene glycol.ALSO:Glass fibre textile material e.g. fibres and yarns, substantially free from any coating, is coated with a water-insoluble resinous inter-reaction product of a water-soluble polyvinyl alchool and either a polymer of an unsaturated monobasic acid or a copolymer of an unsaturated monobasic acid with a compound capable of being polymerized and containing a single >C = CH2 group and then, after heating the treated material so as to form a water-insoluble resin e.g. between 100 DEG C. to 250 DEG C., further treating it with a Werner complex compound in which an acids group is co-ordinated with a trivalent nuclear chromium atom, the acids group containing at least 8 carbon atoms e.g. between 12 and 18 carbon atoms.  The polymer or copolymer may be water-soluble. The polyvinyl alcohol may have at least 75% degree of hydrolysis e.g. at least 85% degree of hydrolysis, and may be present from 0.3 to 3 e.g. 0.6 to 1.8 parts by weight per part by weight of the polymer or copolymer of the unsaturated monobasic acid.  The unsaturated monobasic acid may be acrylic, methacrylic or crotonic acid. Suitable comonomers with the unsaturated monobasic acid are acrylonitrile, methacrylonitrile, styrene, substituted styrene, esters of vinyl alcohol such as vinyl acetate, and esters of acrylic or methacrylic acid.  The material may be treated with an aqueous solution of a mixture of the polyvinyl alcohol and the polymer or copolymer of the unsaturated monobasic acid, the concentration of the solution being from 0.15 to 0.5% by weight.  The material may be dyed or printed after formation of the water-insoluble resin e.g. with a vat dyestuff in the soluble stabilized leuco form.  The Werner complex compound may be stearato chromyl chloride which may be applied from a solution having a concentration ranging from 0.25 to 0.75% by weight.  The material may be finally dried and heated e.g. at 140 to 200 DEG C.  The solution may include softening agents and also low molecular weight polyhydric alcohols such as glycerol or ethylene glycol.