Patent GB-371339-A (GB)
Title: Improvements in or relating to the production of compositions of or containing derivatives of balata resin or other rubber resins
IPC: C08J5/12
Filed: 1931-01-13
Abstract: Balata resin, guttapercha resin, or other resins extractable from rubber, are dissolved in petroleum naphtha, carbon tetrachloride, benzene, or cyclohexane and treated with formaldehyde or a polymer or derivative such as methylal, trioxymethylene, paraformaldehyde, or hexamethylene tetramine, in presence of a condensing agent such as sulphuric, hydrochloric, syrupy phosphoric, trichloracetic, or anhydrous oxalic acid, acetic anhydride, zinc chloride, or anhydrous aluminium chloride, to produce resinous substances, which may if desired be further subjected to prolonged heating in air, in an inert gas such as nitrogen or carbon dioxide, or in vacuo.  Before or after the condensation, one or more of the following substances may be added:--unsaturated hydrocarbons such as rubber, rubber reclaim, turpentine, isoprene or other butadiene hydrocarbons; guttapercha, balata, rubber waste, mineral rubbers, factice, vegetable resins such as shellac, ester gum, oils such as rape oil, cellulose esters, viscose, proteins such as casein, vulcanizing agents such as sulphur, vulcanizing accelerators, colouring matters, softeners and preservatives for rubber, diphenyl guanidine, magnesium or zinc stearate, manganese dioxide. The compositions, which are used as adhesives for bonding rubber to metal, glass, hard rubber, &c., as lacquers for wood, metal, &c., and as dressings for adhesive tape, may be applied in softened condition, as solutions in benzene, petroleum naphtha, coal tar naphtha, or carbon tetrachloride, or as aqueous dispersions.  Metal plates &c. may be given a coating of rubber by applying, first the bonding agent, and then the rubber from aqueous dispersions by dipping or electrophoresis.  Specification 348,303, [Group V], is referred to.ALSO:Balata resin, guttapercha resin, or other resins extractable from rubber, are dissolved in petroleum naphtha, carbon tetrachloride, benzene, or cyclohexane, and treated with formaldehyde or a polymer or derivative thereof such as methylal, trioxymethylene, paraformaldehyde, or hexamethylene-tetramine, in presence of a condensing agent such as sulphuric, hydrochloric, syrupy phosphoric, trichloracetic, or anhydrous oxalic acid, acetic anhydride, zinc chloride, or anhydrous aluminium chloride, to produce resinous substances, which may if desired be further subjected to prolonged heating in air, in an inert gas such as nitrogen or carbon dioxide, or in vacuo.  Before or after the condensation, one or more of the following substances may be added: unsaturated hydrocarbons such as rubber, rubber reclaim, turpentine, isoprene or other butadiene hydrocarbons; guttapercha, balata, rubber waste, mineral rubbers, factice, vegetable resins such as shellac, ester gum, oils such as rape oil, cellulose esters, viscose, proteins such as casein, vulcanizing agents such as sulphur, vulcanizing accelerators, colouring matters, softeners and preservatives for rubber, diphenyl guanidine, magnesium or zinc stearate, manganese dioxide.  Specification 348,303, [Group V], is referred to.ALSO:Balata resin, guttapercha resin, or other resins extractable from rubber, are dissolved in petroleum naphtha, carbon tetrachloride, benzene, or cyclohexane, and treated with formaldehyde or a polymer or derivative such as methylal, trioxymethylene, paraformaldehyde, or hexamethylene tetramine, in presence of a condensing agent such as sulphuric, hydrochloric, syrupy phosphoric trichloroacetic, or anhydrous oxalic acid, acetic anhydride, zinc chloride, or anhydrous aluminium chloride, to produce resinous substances, which may if desired be further subjected to prolonged heating in air, in an inert gas such as nitrogen or carbon dioxide, or in vacuo.  Before or after the condensation, one or more of the following substances may be added: unsaturated hydrocarbons such as rubber, rubber reclaim, turpentine, isoprene or other butadiene hydrocarbons; guttapercha, balata, rubber waste, mineral rubbers, factice, vegetable resins such as shellac, ester gum, oils such as rape oil, cellulose esters, viscose, proteins such as casein, vulcanizing agents such as sulphur, vulcanizing accelerators, colouring matters, softeners and preservatives for rubber, diphenyl guanidine, magnesium or zinc stearate, manganese dioxide.  The compositions, which are used as adhesives for bonding rubber to metal, glass, hard rubber, &c., as lacquers for wood, metal, &c., and as dressings for adhesive tape, may be applied in softened condition, as solutions in benzene, petroleum naphtha, coal tar naphtha, or carbon tetrachloride, or as aqueous dispersions.  Metal plates &c. may be given a coating of rubber by applying, first the bonding agent, and then the rubber from aqueous dispersions by dipping or electrophoresis.  Specification 348,303 is referred to.