| 摘要 |
This invention relates to the synthesis of a latex which can be used in making water-reducible self-crosslinking coating compositions, such as paints, which contain no or extremely low levels of volatile organic compounds. Coatings which are formulated with the latex of this invention offer an environmental advantage as well as excellent solvent resistance, excellent flexibility and excellent ultra-violet light resistance. This invention more specifically discloses a water-reducible coating composition which is comprised of (1) water; (2) a resin having repeat units which are derived from (a) about 30 to about 75 weight percent vinyl aromatic monomers, (b) about 20 to about 65 percent of alkyl acrylate monomers, (c) about 1 to about 8 weight percent alkyl propenoic acid monomers and (d) about 0.5 to about 5 weight percent acryloxyalkenyltrialkoxysilane monomers, based on 100 weight percent monomers; (3) a wetting agent; and (4) a defoamer. Gamma-methacryloxypropyltrimethoxysilane is a representative example of a highly preferred acryloxyalkenyl-trialkoxysilane monomner.
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