Solvent finishing of fiber glass fabrics

Claim 1

A non-aqueous process for resin finishing and dyeing woven fiber glass fabric which comprises the steps of sequentially: A. impregnating the fabric with a liquid pre-finishing composition having a surface tension of less than 30 dynes/cm. at 25° C.; which composition comprises (1) 0.1 to 5.0 weight percent of solvent soluble glass-reactive low molecular weight organosilicon compound and (2) organic solvent having a boiling point of 50° C. to 150° C. at 760 mm Hg pressure; B. volatilizing a major portion of the organic solvent from the fabric; C. impregnating the fabric with a liquid finishing composition having a surface tension of less than 30 dynes/cm. at 25° C.; and a viscosity of less than 1,000 centipoises at 25° C.; which composition comprises (1) 0.5 to 10.0 weight percent of solvent soluble synthetic resin selected from the group consisting of polyacrylics, polyurethanes, polyesters, and polysilicones; (2) pigment dye; and (3) single phase solvent comprising at least 90 percent by weight of aliphatic chlorinated hydrocarbon having 1 to 4 carbon atoms and no more than 5 chlorine atoms, said solvent having a boiling point between 50° C. to 150° C. at 760 mm Hg pressure; then D. volatilizing a major portion of the aliphatic chlorinated solvent from the fabric thereby depositing resin and dye on the fabric.