Formaldehyde-free novel strong waterproof anti-freezing white latex

Abstract

The invention provides a formaldehyde-free novel strong waterproof anti-freezing white latex. The white latex is characterized by comprising the following components in percentage by weight: 18 to 25percent of polyvinyl alcohol, 2 to 5 percent of glacial acetic acid, 0.2 to 0.5 percent of sodium hydroxide, 0.5 to 1 percent of hydrochloric acid, 10 to 15 percent of copolymerization emulsion of ethylene-polyvinyl acetate, 0.5 to 2 percent of chitin, 3 to 5 percent of glycol, and 40 to 70 percent of water. The white latex has the advantages of good waterproof and anti-freezing properties, high viscosity, difficult precipitation, no separation, the use of water as a medium, no containing of formaldehyde, urea and organic solvents, no combustion, no pollution of pungent odor, simple process, less equipment investment, low product cost, the suitability for popularization and application, and no environmental pollution. Therefore, the white latex is the novel product facilitating the protection of human health.

Description

1. Technical field [0001] The invention relates to an adhesive, in particular to a white latex which does not use formaldehyde and urea as raw materials and has high cohesive strength, water resistance and good frost resistance. 2. Technical background [0002] Currently on the market, polyvinyl acetate is used as white latex as the main raw material. Due to high cost, complex polymerization process, large equipment investment, long production cycle, poor water resistance and frost resistance, it has been technically eliminated. A batch of strong white latex that does not use polyvinyl acetate, represented by patent application No. 02109653.8 , although the cost has been reduced, almost all of them use highly irritating and polluting raw materials such as formaldehyde and urea, and some have poor water and frost resistance, or the adhesive components and additives used are complex, and the cost is still high .The use performance and market prospect are not optimistic and th...

AI Technical Summary

Problems solved by technology

Due to high cost, complex polymerization process, large equipment investment, long production cycle, poor water resistance and frost resistance, it has been technically eliminated. A batch of strong white latex that does not use polyvinyl acetate, represented by patent application No. 02109653.8 , although the cost has been reduced, almost all of them use highly irritating and polluting raw materials such as formaldehyde and urea, and some have poor water and frost resistance, or the adhesive components and additives used are complex, and the cost is still high .The use performance and market prospect are not optimistic and there is a need for improvement.