Environment-friendly modified chlorinated polypropylene adhesive and preparation method thereof

Abstract

The invention discloses environment-friendly modified chlorinated polypropylene (CPP) adhesive and a preparation method thereof. The preparation method comprises the following steps: (1) adding 100 weight parts of chlorinated polypropylene, 15 to 25 weight parts of monomers and 200 to 300 weight parts of solvent to a reactor provided with a stirring device, heating until the temperature is increased to 70 to 90 DEG C; (2) adding 3 to 5 weight parts of initiator after the monomers are completely dissolved, further heating to the reaction temperature of 70 to 90 DEG C; and (3) stop heating after the reaction is finished, precipitating the product by acetone, then, carrying out the suction-filtration by a Buchner funnel, oven-drying, dissolving the product by 200 weight parts of solvent, and adding 5 to 15 weight parts of tackifier to obtain the modified CPP adhesive. By using the environment-friendly solvent method to graft modified CPP and further adding acid anhydride, acrylate and nitrogenous monomers, the monomers can be grafted onto the CPP under the action of the initiator, so the modified CPP adhesive has high adhesion to the surface of thermoplastic polyolefin substrates or metals; and the modified CPP adhesive of the invention has the advantages of simple preparation process, non-toxic application, high cost performance ratio, and stronger adhesion to metals or non-polar polymers.

Description

technical field [0001] The invention relates to a modified chlorinated polypropylene (CPP) adhesive. Background technique [0002] Judging from the current consumption situation, although the consumption situation of chlorinated polypropylene (CPP) in various countries in the world is different, in general, coatings and adhesives account for 40%, ink vehicles account for 40%, and others account for 20%. my country's CPP products are mainly used in coatings, adhesives, ink vehicles and leather treatment agents. In recent years, with the continuous development of my country's economic level, my country's demand for CPP and its modified products is increasing day by day. According to incomplete statistics, the total domestic production capacity is about 5,000t / year, but the demand in my country is 10,000t / year, and the gap is very large. Although large-scale CPP devices began to be built in the middle and late 1990s, they were mainly concentrated in nearly 10 enterprises of d...

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the existing solution method for preparing modified chlorinated polypropylene, the purpose of the present invention is to provide a method for preparing an environmentally friendly modified chlorinated polypropylene adhesive, thereby overcoming the problems such as toxic solvents in the traditional solution method