The use of a mixture of vinyl esters / vinylphosphonsaeureester - copolymers and natural resins and / or synthetic resins as pressure-sensitive adhesive

摘要

A composition comprises (a) 10 to 99% of a copolymer of at least one vinyl ester of a monobasic carboxylic acid containing 1 to 19 carbon atoms, and at least one vinylphosphonic acid diester, and (b) 90 to 1% of a natural or synthetic resin or mixture thereof. The compositions may optionally contain plasticizers and fillers. Natural resins include rosin, rosin esters, esters of hydroabietyl alcohol and polybasic acids and copals. Synthetic resins include phenolic, terpenephenolic, melamine, maleinate, epoxide, cyclic ketone and coumarone-indene resins, carbamic acid ester resins, polyvinyl acetate and vinylacetate-maleic acid dibutyl ester copolymers. Exemplified copolymers (a) are of vinyl acetate - vinyl phosphonic acid diethylhexyl ester, vinyl isobutyrate - vinyl phosphonic acid diethyl ester and of the vinyl ester of versatic acid - vinyl phosphonic acid diethylhexyl ester. The compositions are useful as adhesives.