Abstract: The invention relates to a heat-sealing adhesive, which comprises a mixture of:a) 20-60% by weight of nonadhesive (meth)acrylic acid ester-(meth)acrylic acid copolymers, which contain (meth)acrylic acid ester units with 2-8 carbon atoms in the alcohol component and, relative to these copolymers, 1-10% by weight of (meth)acrylic acid, with a melting temperature in the range of 115 to 150 and a K value according to Fikentscher in the range of 70 to 110 (measured according to DIN 51562 in tetrahydrofuran),b) 10-50% by weight of self-adhesive acrylic acid esteracrylic acid copolymers, which contain acrylic acid ester units with 2-8 carbon atoms in the alcohol component and, relative to these copolymers, 1-10% by weight of acrylic acid, with a glass transition temperature T.sub.G in the range of -45.degree. to -10.degree. C., a K value according to Fikentscher in the range of 70 to 120 (measured according to DIN 51562 in tetrahydrofuran) and a softening temperature in the range of 50.degree. to 100.degree. C.

Abstract: Pressure sensitive paper adhesive tape which is especially designed for use in libraries and archives to restore, preserve and assemble paper substrates such as books, documents, charts, drawings, engravings and the like. It contains a transparent to opaque base paper weighing 10-50 g/m.sup.2 which is coated on one side with a self-adhesive (self-sticking) material, and the coated side of the tape may be covered with a silicon-treated separating paper. The self-adhesive material composition consists essentially of:60-85 parts by weight of copolymerisates consisting essentially of from 50-90 wt. % acrylates whose alcohol component has 2 to 12 C atoms, and 10-50 wt. % styrene;5-20 parts by weight of alkali metal and/or alkaline earth metal salts of polyacrylic acids;3-15 parts by weight of primary softeners based on alkylbenzyl phthalates;5-15 parts by weight of alkylphenol polyglycol ethers; and1-4 parts by weight of calcium carbonate;wherein the total of all parts by weight amounts to 100.

Abstract: A water-soluble, pressure sensitive, self-adhesive composition comprising a mixture of(a) a copolymer comprising 70 to 80 parts by weight of monomeric ethyl acrylate and 20 to 30 parts by weight of a monomeric, .alpha., .beta. unsaturated aliphatic monocarboxylic acid and(b) a tertiary, ethoxylated N-alkyl alkane diamine having 3 to 18 ethylene oxide units per molecule, said alkyl having 10 to 18 carbon atoms,from 50% to 90% of the acid groups of said acid being neutralized. A method of preparation of the composition and an adhesive tape made therewith are also disclosed.

Abstract: The composition comprises an aqueous mixture of an acrylic acid ester copolymer and/or a polyvinyl ether; polyvinyl methyl ether; an alkali metal and/or ammonium salt of polyacrylic acid, of polymethacrylic acid or of copolymer of acrylic and methacrylic acids; a monomeric plasticizer; and an emulsifier. The composition is useful as a pressure sensitive adhesive for labels. A label coated with the composition is readily removed from the surface upon which it is affixed by treatment with water.