Abstract: Floor covering adhesives substantially comprisingA. a dispersion of a copolymer of20-60% by weight of vinylidene chloride34-80% by weight of a mixture of 40-80 parts by weight of esters of acrylic acid with C.sub.1 -C.sub.18 -alkanols and 20-60 parts by weight of vinyl esters and0.5 to 6% by weight of .alpha.,62 -monoolefinically unsaturated C.sub.3 -C.sub.5 -mono- and/or dicarboxylic acids and/or amides thereof and/or vinyl sulfonate,B. 30-150 parts by weight (solid), based on 100 parts of a copolymer of A, of tackifying resins from the group of the rosins and derivatives thereof,C. 0-50 parts by weight, based on 100 parts of resin B, of plasticizers and/or liquid resins and also, if desired,D. fillers,are shampoo-resistant and have a high peel strength.

Abstract: Layers of adhesives which are applied onto polyolefin surfaces from aqueous dispersion exhibit improved adhesion if a dicarboxylic acid dihydrazide of 2 to 10 carbon atoms and an aqueous dispersion of an adhesive polymer are applied, preferably as a mixture, onto the polyolefin surfaces which have been pretreated by corona discharge.

Abstract: Water-soluble terpolymers which contain, as copolymerized units,(a) from 10 to 35% by weight of an N-vinyllactam or an N-vinyl acid amide,(b) from 5 to 20% by weight of acrylic acid or of a salt of acrylic acid and(c) from 80 to 50% by weight of a C.sub.1 -C.sub.4 -alkyl vinyl ether,and have a glass transition temperature T.sub.g below 60.degree. C. can be prepared by polymerizing the monomer mixture in an inert organic solvent in the presence of a polymerization initiator and can, where appropriate, be partially or completely neutralized with a base, so as to form a salt. The products may be used as raw materials for adhesives or, in the form of an aqueous solution, as the adhesive itself.