| 摘要 |
Water-dispersible oil-modified alkyd resins are prepared by reacting (i) a poly-oxyalkylene glycol having an average M.W. of 200-6,000, (ii) a different polyhydric alcohol, (iii) a polycarboxylic acid, and (iv) a drying oil, a drying oil fatty acid, and/or a partial polyhydric alcohol ester thereof. Component (iv) may be copolymerized with an ethytlenically unsaturated monomer (v) before, during, or after the esterification. Components specified are: (i) polyethylene and polypropylene glycols, including a mixture of the former; (ii) pentaerythritol, mannitol, sorbitol, and glycerine; (iii) succinic, glutaric, phthalic and terephthalic; (iv) linseed, dehydrated castor, tung, soya bean, oiticica, cottonseed, perilla, sesame, peanut, sunflower seed, poppy seed and hemp seed; (v) vinyl acetate, styrene, vinyl toluenes, vinyl naphthalene, acenaphthalene, a -methyl styrene chloromethyl styrene, p-chloro-or fluoro-styrene, acrylonitrile, methyl methacrylate and the alkylesters or nitriles of acrylic, methacrylic or chloroacrylic acids. Optional additives include: TiO2, talc, lithopone, china clay, litharge, the mono-butyl ether of a polyethylene glycol of M.W. 1400; morpholine, xylene, n-propyl alcohol, hexylene-glycol mono-ethyl and mono-butyl ethers and the acetates thereof, dicthyleneglycol mono- and di-ethyl and butyl ethers, ethylene glycol phenyl and benzyl ethers, diacetone alcohol and di-methoxy tetraglycol, sodium alkyl sulphate where the alkyl group is essentially C12; Co, Pb or Mn linoleates, NH3 or NaOH. There are several examples, including comparative experiments with the teachings of U.S.A. Specification 2,634,245 in which component (iv) is reacted with the reaction product of components (i), (ii) and (iii). Use Water-based paints. |
