Patent GB-779256-A (GB)
Title: Improvements in adhesive tapes or sheets
IPC: C09J7/38
Filed: 1954-04-30
Abstract: A pressure-sensitive adhesive composition comprises a natural and/or synthetic rubber base and 0.01 to 5 per cent by weight of the composition of a compound (or a salt thereof) of the formula H2NR wherein R is NH2, R1NH2, (CH2)2R2 or (CH2)3R2, wherein R1 is at least one alkyl, alkanol, organic acid radical, aralkyl or primary amine group having from two to six carbon atoms, and R2 is at least one primary or primary-secondary amine group having from two to eighteen carbon atoms.  Examples describe the following compositions: (a) butadienestyrene copolymer, phenol-modified poly-terpene resin, and tetraethylene pentamine, (b) butadiene-styrene copolymer, reclaim rubber, Para rubber, zinc oxide, petroleum oil, polyterpene resin, and tetraethylene pentamine, (e) butadiene - styrene copolymer, rubber reclaim, smoked sheet, zinc oxide, alkylated polyhydroxyl phenol, petroleum oil, olefin-diene copolymer and di-hydrazine oxalate, and (f) butadiene-styrene copolymer, reclaim rubber, crepe rubber, zinc oxide, petroleum jelly, rosin glyceride, and either ethylene diamine, hydrazine hydrate, hexamethylene diamine, diethylene triamine, triethylene tetramine, propylene diamine, 1,3-diamine-2-propanol, 3-isopropyl - amino - propylamine, 3,31 - imino - bis propylamine, 1,4 - butane - diamine - dihydro - chloride, or R-NH-CH2-CH2-CH2-NH2 where R is a tallow having eighteen carbon atoms.  The composition may be applied to sheets or tapes in solution in toluene.ALSO:A pressure sensitive adhesive sheet or tape is coated with an adhesive composition comprising a natural or synthetic rubber base and having improved adhesion due to the incorporation of from about 0,01 to 5 per cent by weight of the composition of a compound (or a salt thereof) of the formula HiNR wherein R2 is NH2, R1NH2, (CH2)2R2 or (CH2)3R2, wherein R1 is at least one alkyl, alkanol, organic acid radical, aralkyl or primary amine group having from two to six carbon atoms, and wherein R2 is at least one primary or primary-secondary amine group having from two to eighteen carbon atoms.  The preparation of adhesive compositions having the following ingredients is described: (a) butadiene-styrene copolymer or smoked sheet rubber, phenol modified polyterpene resin, and tetraethylene pentamine, (b) butadiene-styrene copolymer, reclaim rubber, fararubber, zinc oxide, petroleum oil, polyterpene resin, and tetraethylene pentamine, (c) crepe rubber, di-hydrazine oxalate, di-tertiary butyl p-cretol, and polyterpene resin; (d) crepe rubber, polyterpene resin, and ethylene diamine; (e) butadiene styrene copolymer, rubber reclaim, smoked sheet, zinc oxide, alkylated polyhydroxyl phenol, petroleum oil, copolymerized conjugated dienes and active olefins, and dihydrazine oxalate, and (f) butadiene-styrene copolymer, reclaim rubber, crepe rubber, zinc oxide, petroleum jelly, rosin glyceride, and either ethylene diamine, hydrazine hydrate, hexamethylene diamine, diethylene triamine, triethylene tetramine, propylene diamine, 1, 3 diamine 2 propanol, 3-isopropyl amino propylamine, 3, 31 imino bis propylamine, 1, 4 butane diamine dihydrochloride, or R-NH-CH2-CH2-CH2-NH2 where R is a tallow having eighteen carbon atoms.  The composition may be applied to the adhesive sheet or tape in a solution of an aliphatic or aromatic solvent, e.g. toluene.