公开(公告)号：US3300430A

公开(公告)日：1967-01-24

申请号：US36789664

申请日：1964-05-15

Applicant: NAT STARCH CHEM CORP

Inventor： ARMOUR WALTER B ,  FASS RICHARD A

IPC: C07F11/00 ,  C08K5/00 ,  C09J131/04

CPC classification number: C08K5/0091 ,  C07F11/005 ,  C08L2666/34 ,  C09J131/04 ,  C08L31/04

Abstract: The invention comprises reaction products of 2,4,6-trimethylolphenol and water-soluble chromic salts, which are obtainable by mixing aqueous solutions of the two reagents. The preferred chromic salt is chromic acetate, but reference is made also to the use of chromic bromide, chloride, nitrate, phosphate and sulphate. An example is given of the use of chromic acetate. The products are useful as waterproofing additives for vinyl resins (see Division C3).ALSO:As waterproofing additives for adhesives based on emulsions of vinyl polymers, use is made of reaction products of 2,4,6-trimethylolphenol with water-soluble chromic salts (see Division C2). The preferred chromic salt is chromic acetate, but chromic bromide, chloride, nitrate, phosphate or sulphate may also be used. The reaction product is preferably taken as such but may also be formed in situ by adding aqueous solutions of the two reagents to the adhesive composition. The invention is particularly applicable to adhesives comprising emulsions of vinyl acetate or of co-polymers of vinyl acetate with other ethylenically unsaturated monomers, a number of which are specified. A number of substrata to which the adhesives may be applied are also specified. Comparative experimental results are given.