Patent GB-569666-A (GB)
Title: Improvements in or relating to the adhesive bonding of surfaces or in or relating toadhesive compositions suitable for use therein
IPC: C09J109/02
Filed: 1943-06-23
Abstract: An adhesive composition comprises (a) a copolymer of butadiene and acrylonitrile, (b) an organic solvent, (c) a resinous material or a cellulose derivative such as nitrocellulose, in an amount by weight exceeding half the amount by weight of the copolymer.  The resinous material may be a natural resin such as wood rosin, lime hardened rosin, a resinate such as zinc resinate, chlorinated polyisobutylene, a phenolcresol- or xylenol-formaldehyde resin, but not a chlorinated rubber or a polyvinyl resin unless there is present also an inorganic filling material in an amount by weight exceeding the amount by weight of the copolymer, or in an amount by volume exceeding half the amount by volume of the copolymer, or an accelerator, together with sulphur.  Suitable copolymers are those sold under the Registered Trade Marks "Chemigum" and "Perbunan" and also "Hycar O.R."  The solvents may be benzene, toluene, acetone, methyl ethyl ketone, monochlorobenzene, ethyl acetate, dibenzyl ether, benzyl alcohol, furfural or trichlorethylene.  The accelerator may be butyl eight or zinc isopropyl xanthate, the filler may be zinc oxide, calcium silicate or carbon black, stearic acid may also be added.  In the case of a mix containing a small quantity of accelerator, e.g. butadiene-acrylonitrile polymer 100 parts by weight VYHF resin 100, sulphur 2, stearic acid 1.5, zinc oxide 5, calcium silicate 20, butyl eight 0.25, methyl ethyl ketone 800, the composition may be prepared some little time before use.  When a rapid vulcanization is required, about 4 parts of accelerator are added to the solvent and this solution added to the remainder of the mix immediately before using.  The adhesive is suitable for joining metal, glass, vulcanized rubber, wood, leather fabric or paper surfaces either to themselves or to each other, for sticking outsoles to shoe bottoms and also for sealing and glazing. Specification 560,808 is referred to and Specification 567,096 in both Provisional Specifications.ALSO:An adhesive composition comprises (a) a copolymer of butadiene and acrylonitrile, (b) an organic solvent, (c) a resinous material or a cellulose derivative such as nitrocellulose, in an amount by weight exceeding half the amount by weight of the copolymer.  The resinous material may be a natural resin such as wood rosin, lime-hardened rosin, a resinate such as zinc resinate, chlorinated polyisobutylene, a phenol-, cresol- or xylenol-formaldehyde resin, but not a chlorinated rubber or a polyvinyl resin unless there is present also an inorganic filling material in an amount by weight exceeding the amount by weight of the copolymer, or in an amount by volume exceeding half the amount by volume of the copolymer, or an accelerator together with sulphur. Suitable copolymers are those sold under the Registered Trade Marks "Chemigum" and "Perbunan" and also "Hycar O.R."  The solvent may be benzene, toluene, acetone, methyl ethyl ketone, monochlorobenzene, ethyl acetate, dibenzyl ether, benzyl alcohol, furfural or trichlorethylene.  The accelerator may be butyl eight or zinc isopropyl xanthate, the filler may be zinc oxide, calcium silicate or carbon black, stearic acid may also be added.  In the case of a mix containing a small quantity of accelerator, e.g. butadiene-acrolylonitrile polymer 100 parts by weight VYHF resin 100, sulphur 2, stearic acid 1.5, zinc oxide 5, calcium silicate 20, butyl eight 0.25, methyl ethyl ketone 800, the composition may be prepared some little time before use.  When a rapid vulcanization is required, about 4 parts of accelerator are added to the solvent and this solution added to the remainder of the mix immediately before using. The adhesive is suitable for joining metal, glass, vulcanized rubber, wood, leather fabric or paper surfaces either to themselves or to each other, for sticking outsoles to shoe bottoms, and also for sealing and glazing. Specification 560,808 is referred to, and Specification 567,096 is referred to in both Provisional Specifications.