Dispersing liquid used in pressure sensitive adhesive

The invention relates to a process for the preparation of contact adhesive dispersions based on a copolymer CP built up from butyl acrylate and (meth)acrylic acid, in which the aqueous emulsion EM containing butyl acrylate and anionic and nonionic emulsifiers is polymerised in the aqueous phase with...

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Bibliographische Detailangaben
Hauptverfasser:	GUNTHER MUELLER, JOACHIM HEYNE, HERBERT FINK
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	The invention relates to a process for the preparation of contact adhesive dispersions based on a copolymer CP built up from butyl acrylate and (meth)acrylic acid, in which the aqueous emulsion EM containing butyl acrylate and anionic and nonionic emulsifiers is polymerised in the aqueous phase with warming and in the presence of at least one water-soluble initiator IN of the formula (I> M R1 (I> in which M is a metal cation and R1 is the anion of a peroxo acid or of an azo-containing acid, in amounts of at least 0.5 to 1.5 % by weight, based on the monomers, the (meth)acrylic acid is then emulsified in with retention of the elevated temperature, and finally the final polymerisation is carried out with addition of a further initiator RI.