Waterborne dispersions of epoxidized polydiene block copolymers and amino resins
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United States of America Patent
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Jun 19, 2001
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N/A
app pub date -
Feb 16, 1995
filing date -
Jun 21, 1994
priority date (Note) -
Expired
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Abstract
A crosslinkble waterborne dispersion useful as a coating on metal substrates of an epoxidized polydiene block polymer composition which comprises: (a) 10 to 65% by weight of a polydiene block polymer containing at least five olefinic epoxy groups per molecule which are sterically hindered, (b) 0.2 to 25% by weight of a compatible aminoplast, (c) 0.1 to 10% by weight of a surfactant which is nonionic or anionic and has a volatile cation, and (d) the balance water. A water-continuous process and an inversion process for making a dispersion are also described.
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