Tackifier resin, tackifier resin emulsion, aqueous adhesive composition, and polychloroprene latex adhesive composition

• Main Author: OGAWA, HISAKO
• Format: Patent
• Language: Chinese; English
• Published: 01.06.2018
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON 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

To provide a new rosin ester tackifier resin which has good initial adhesive strength while keeping normal state adhesive strength and heat-resistant adhesiveness of various aqueous adhesives, in particular, a polychloroprene latex adhesive composition. A tackifier resin is a reactant of (A) rosin, (B) [alpha],[beta] unsaturated carboxylic acid modified rosin and (C) alcohol, where a content of a dehydroabietic acid-derived skeleton is 20 mass% or more and a ratio of a peak area (S2) of a component having a weight average molecular weight of 1,200 or more to the total peak area (S1) measured by gel permeation chromatography is 20-50%. Preferably, in the tackifier resin, the component (A) is natural rosin and/or disproportionated rosin, the [alpha],[beta] unsaturated carboxylic acid of the component (B) is a fumaric acid and/or a maleic acid, and the component (C) is one or more kinds selected from divalent, trivalent and tetravalent alcohol.