Patent GB-680337-A (GB)
Title: Improvements relating to the treatment of textile and other fibrous materials
Inventor: GENTLE ALEXANDER HENDERSON
IPC: D06M15/41
Filed: 1949-06-30
Abstract: Rubber is bonded to fibrous material by vulcanizing it on to fibrous material the molecules of which comprise repeating units containing carbon, hydrogen and a more electronegative element than carbon which has been impregnated with a water-insoluble, alcohol soluble, synthetic resin in solution in a volatile, neutral organic liquid which is completely miscible with water and drying the material, the synthetic resin being a thermosetting resin obtainable by condensing formaldehyde with phenol in molar proportions of CH2O to phenol not substantially greater than 1 : 1 under non-alkaline conditions, the said solution being free from any source of additional formaldehyde. The preferred resin is one made by heating paraformaldehyde with resorcinol in molar proportions of CH2O to resorcinol ranging from 6 : 7 to 1 : 1 in the absence of any added catalyst.  The fibrous material may be cotton, linen, ramie, jute, regenerated cellulose, cellulose acetate, cellulose propionate, cellulose acetate-propionate, cellulose acetate-butyrate, ethyl cellulose, polymers and copolymers of acrylonitrile, copolymers of vinyl acetate, nylon, polyethylene terephthalate, poly - 4-amino - 1,2,4 - triazole, wood and paper.  The term rubber includes natural rubber, polymers and copolymers of chloroprene, and copolymers of butadiene with styrene, acrylonitrile or isobutylene and copolymers of isoprene with isobutylene.  The volatile solvent may be methanol, ethanol isopropanol, acetone, tetramethylene oxide or dioxane. Specification 477,380 is referred to.ALSO:Rubber is bonded to fibrous material by vulcanising it onto fibrous material the molecules of which comprise repeating units containing carbon, hydrogen and a more electronegative element than carbon which has been impregnated with a water-insoluble, alcohol-soluble, synthetic resin in solution in a volatile, neutral organic liquid which is completely miscible with water and drying the material, the synthetic resin being a thermosetting resin obtainable by condensing formaldehyde with phenol in molar proportions of CH2O to phenol not substantially greater than 1 : 1 under non-alkaline conditions, the said solution being free from any source of additional formaldehyde.  The preferred resin is one made by heating paraformaldehyde with resorcinol in molar proportions of CH2O to resorcinol ranging from 6 : 7 to 1 : 1 in the absence of any added catalyst.  The fibrous material may be cotton, linen, ramie, jute, regenerated cellulose, cellulose acetate, cellulose propionate, cellulose acetate-propionate, cellulose acetate-butyrate, ethyl cellulose, polymers and copolymers of acrylonitrile, copolymers of vinyl acetate, nylon, polyethylene terephthate, poly-4-amino-1.2.4-triazole, wood and paper.  The term rubber includes natural rubber, polymers and copolymers of chloroprene, and copolymers of butadiene with styrene, acrylonitrile or isobutylene and copolymers of isoprene with isobutylene.  The volatile solvent may be methanol, ethanol, isopropanol, acetone, tetramethylene oxide or dioxane.  In an example, the rubber mix consists of crepe rubber, phenyl beta-naphthylamine, sulphur, stearic acid, zinc oxide and benzothiazyl disulphide. Specification 477,380, [Group IV], is referred to.