Process for preparing synthetic rubber latices, their use as raw materials in the preparation of pressure-sensitive adhesives, and pressure-sensitive adhesives

• Main Authors: WALL, NIGEL G, NOLTE, WILFRIED, RUSSEL, PETER J, HOMBACH, RUDOLF
• Format: Patent
• Language: English; French; German
• Published: 23.09.1981
• Subjects: 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

Verfahren zur Herstellung von Synthesekautschuklatices durch Emulsionspolymerisation einer Monomermischung aus 40 - 80 Gew.-Teilen eines konjugierten Diens 0-45 Gew.-Teilen eines Vinylaromaten 0-30 Gew.-Teilen (Meth)Acrylnitril 0-30 Gew.-Teilen eines (Meth)Acrylsäureesters mit 1 - 12 C-Atomen in der Alkoholkomponente oder andere copolymerisierbare Verbindungen sowie 0,5-5,0 Gew.-Teile einer α-β-ungesättigten Mono- oder Dicarbonsäure, wobei die Summe der Monomerkomponenten 100 Gew-Teile ergibt, dadurch gekennzeichnet, daß man bezogen auf 100 Gew.-Teile Monomer 0,5 bis 2,0 Gew.-Teile eines Kettenübertragungsmittels einsetzt. Die so hergestellten Latices können als Haftklebstoffrohstoff bei der Herstellung von Haftklebemassen eingesetzt werden. A process for the production of synthetic rubber latices by the emulsion polymerization of a monomer mixture of: 40 to 80 parts by weight of a conjugated diene; 0 to 45 parts by weight of an aromatic vinyl compound; 0 to 30 parts by weight of (meth)acrylonitrile 0 to 30 parts by weight of a (meth)acrylic acid ester containing from 1 to 12 carbon atoms in the alcohol component or other copolymerizable compounds, and 0.5 to 5.0 parts by weight of an alpha , beta -unsaturated mopnocarboxylic or dicarboxylic acid, the sum of the monomer compounds amounting to 100 parts by weight, characterized in that from 0.5 to 2.0 parts by weight of a chain transfer agent are used per 100 parts by weight of monomer. Said latices can be used for producing pressure-sensitive adhesives.