CHLOROPRENE RUBBER LATEX 2-PACK TYPE ADHESIVE COMPOSITION AND BONDING THEREOF

• Main Authors: YAMAMOTO NORIMASA, KARASUDA TOSHINORI, WAKAYAMA HISAMASA
• Format: Patent
• Language: English
• Published: 20.10.1998
• Edition: 6
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; POLISHES; USE OF MATERIALS AS ADHESIVES

PROBLEM TO BE SOLVED: To obtain the subject composition excellent in adhesive physical properties, such as normal and high temperature adhesive force, particularly, initial adhesive strength, by comprising a main agent containing chloroprene rubber latex as the main component, and a specific solidifying agent. SOLUTION: This 2-pack type composition comprises (A) a main agent consisting of (i) chloroprene rubber latex as the main component, and as necessary, (ii) a tackifying resin and/or a metallic oxide(s), and (B) a solidifying agent consisting of (iii) 1-50 pts.wt., of a water-soluble metallic salt per 100 pts.wt. of the rubber in the component A (in terms of pure rubber content) and (iv) an aqueous solution containing a cationic surfactant in the weight ratio: the component (iii)/the component (iv) of (10:1)-(1:10). As the component (i), a copolymer, obtained from chloroprene monomer and carboxyl group- containing vinyl monomer by using an emulsifier/dispersant affording latex- stability (e.g. water-soluble salt of alkyl diphenyl ether disulfonic acid), is preferably used.