TH49468A - Water-based chemicals used for action on metal surfaces. - Google Patents

Abstract

DC60 (09/08/43) A novel aqueous chemical applied to the surface of metallic materials to improve their surface quality. The aqueous chemical forms an emulsion of synthetic resin and Cr6+ ions with a pH below 5. This emulsion is achieved by emulsifying the following monomer components 1), 2), and 3) using nonionic emulsifiers with radical polymerization effects and nonionic emulsifiers without radical polymerization effects: 1) unsaturated carbohydrate with ethylene properties; 2) methyl or carbamoyl bases with unreplaced or replaced N, phosphonic bases, alkoxy bases, cyanobases, or carbamoyl bases; 3) other monomers different from 1) and 2), forming the core of the copolymer compound. This novel aqueous chemical... These are used for surface treatment of metallic materials to improve their surface quality. The aqueous chemical emulsion consists of synthetic resin and Cr6+ ions and has a pH below 5. This emulsion is obtained by emulsifying the monomer components of 1), 2), and 3) using nonionic emulsifiers with radical polymerization effects and nonionic emulsifiers without radical polymerization effects: 1) unsaturated carbohydrate with ethylene properties; 2) methyl or carbamoyl bases with unreplaced or replaced N, phosphonic bases, alcoxybases, cyanobases, or carbamoyl bases; 3) other monomers different from 1) and 2), forming the core of the copolymer compound.

Claims (7)

1. An aqueous chemical is used for surface treatment of a metallic material containing a synthetic resin emulsion and Cr6+ ions, at a pH below 5. This synthetic resin emulsion is obtained using monomer components A, B, and C below, and emulsifiers D and E below. A: Monomer #1 containing one or more unsaturated ethylene carbonic acid groups. B: Monomer #2, a functional acrylic containing at least one unsubstituted or substituted N-methyl-carbamoyl group, phosphonic group, alkoxy group, cyano group, and carbamoyl group. C: Monomer #3 absent in A and B, capable of copolymerizing with A and B to form the framework of the resulting copolymer. D: A non-ionic emulsifier exhibiting radical polymerization with at least one carbon double bond. Reactive to one molecule E: A nonionic emulsifier that does not exhibit radical polymerization effects. 2. An aqueous chemical mixture of two liquids applied for the surface action of a metallic material as per claim 1, in which the emulsion of synthetic resin and Cr6+ ions are kept separately and made into an aqueous chemical mixture similar to that of claim 1 by mixing them together. 3. Water-based chemicals used for action on the surface of metallic materials according to any of the claims in paragraphs 1 and 2, where the weight ratio of C:D is 10:1 ~ 10:5. 4. Water-based chemical agents for action on the surface of metallic materials under any of the claims of clauses 1-3 where (A)/(A+B+C) is in 0.5 ~ 10% by weight, (B)/(A+B+C) is in 0.5 ~ 60% by weight, and (C)/(A+B+C) is in 30 ~ 99% by weight. 5. Water-based chemical solutions used for surface treatment of metallic materials according to points 1-4, where Cr3+ ions remain present in a solution containing Cr6+ ions, and the weight ratio of (Cr3+ ions)/(Cr3+ + Cr6+ ions) is 0.1-0.9. 6. Water-soluble chemicals used for action on the surface of metallic materials pursuant to claim paragraph 5, where PO43- ions remain present in solutions containing Cr6+ ions and the weight ratio of (PO43- ions)/(Cr3+ ions + Cr6+ ions) is in 0.05 ~ 5.0. 7. An aqueous chemical substance used for action on the surface of any of the claims 1–6, where C is one or more monomers chosen from (meth) acrylic acid ester, styrene, methyl styrene, vinyl acetate, vinyl ester of saturated carbonic acid with alpha- branching, vinyl chloride, vinyl toluene, and ethylene.