Patent GB-832628-A (GB)
Title: Improvements in or relating to the manufacture of composite articles
Inventor: KNOWLES ERIC
IPC: C08J9/36
Filed: 1956-05-15
Abstract: A dispersion of polyvinyl chloride in a plasticizer therefor is applied to polyurethane cellular material, and gelled by the application of heat.  The dispersion may be applied directly by spreading or trowelling, or it may be applied to the surface of a mould, e.g. an embossed aluminium-foil mould having a lubricating film of silicon oil thereon, and the coated mould then applied to the polyurethane article or the dispersion may be applied to the object and a mould applied to the coated object, followed in each case by heating.  The dispersion in addition to polyvinyl chloride which may be copolymerized with minor amounts of vinyl acetate, vinylidene chloride or styrene, may contain plasticizers such as tri-cresyl phosphate, dioctyl phthalate, or polypropylene adipate or sebacate, fillers such as calcium or lead carbonate or barytes, pigments such as titanium dioxide or phthalocyanine blue, and stabilizers such as lead or calcium stearate or epoxidized oils.  The polyurethane surface may first be treated with an adhesive based on a butadiene acrylonitrile copolymer, a polyisocyanate, or a copolymer of vinyl chloride and vinyl acetate.  Articles coated may include upholstery, slipper soles and floor or wall coverings.  Specification 832,629 is referred to.ALSO:A dispersion of polyvinyl chloride in a plasticizer therefor is applied to polyurethane cellular material, and gelled by the application of heat.  The dispersion may be applied directly by spreading or trowelling, or it may be applied to the surface of a mould, e.g. an embossed aluminium-foil mould having a lubricating film of silicone oil thereon, and the coated mould then applied to the polyurethane article or the dispersion may be applied to the object and a mould applied to the coated object, followed in each case by heating.  The dispersion in addition to polyvinyl chloride which may be co-polymerized with minor amounts of vinyl acetate, vinylidene chloride or styrene, may contain plasticizers such as tri-cresyl phosphate, dioctyl phthalate, or polypropylene adipate or sebacate, fillers such as calcium or lead carbonate or barytes, pigments such as titanium dioxide or phthalocyanine blue, and stabilizers such as lead or calcium stearate or epoxidized oils.  The polyurethane surface may first be treated with an adhesive based on a butadiene acrylonitrile copolymer, a polyisocyanate, or a copolymer of vinyl chloride and vinyl acetate.  The other side of the aluminium foil may be coated with a lacquer comprising an oil modified alkyd resin, carbon black, silica and xylene.  Specification 832,629 is referred to.ALSO:A dispersion of polyvinyl chloride in a plasticizer therefor is applied to polyurethane cellular material, and gelled by the application of heat.  The dispersion may be applied to the surface of a mould, e.g. an embossed aluminium-foil mould having a lubricating film of silicone oil thereon, and the coated mould then applied to the polyurethane article or the dispersion may be applied to the object and a mould applied to the coated object, followed in each case by heating.  The dispersion in addition to polyvinyl chloride which may be co-polymerised with minor amounts of vinyl acetate, vinylidene chloride or styrene, may contain plasticizers such as tri-cresyl phosphate, dioctyl phthalate, or polypropylene adipate or sebacate, fillers such as calcium or lead carbonate or barytes, pigments such as titanium dioxide or phthalocyanine blue, and stabilisers such as lead or calcium stearate or epoxidised oils. The polyurethane surface may first be treated with an adhesive based on a butadiene acrylonitrile copolymer, a polyisocyanate, or a copolymer of vinyl chloride and vinyl acetate.  Specification 832,629 is referred to.