C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/250
C08F 299/02 (2006.01) C09D 163/02 (2006.01)
Patent
CA 1301405
ABSTRACT Advanced epoxy resins suitable for use in powder coatings are prepared by (I) polymerizing, in the presence of a suitable catalyst such as tertiary butyl perbenzoate, (A) the reaction product of (1) a diglycidyl ether of a dihydric phenol such as the diglycidyl ether of bisphenol A and with (2) a compound containing a group reactive with an epoxide group and a polymerizable ethylenically unsaturated group such as methacrylic acid; with (B) a monomer feed containing (1) at least one vinyl aromatic monomer such as styrene; (2) a compound containing a group reactive with an epoxide group and a polymerizable ethylenically unsat- urated group such as methacrylic acid; and optionally (3) a hydroxyalkyl acrylate or methacrylate or an alkyl acrylate or methacrylate such as hydroxyethylacrylate; and (II) advancing, in the presence of a suitable 34,378-F advancement catalyst such as ethyltriphenylphosphonium acetate-acetic acid complex, the resultant polymerized product with (C) a dihydric phenol such as bisphenol A. 34,378-F
521197
Haynes Deborah I.
Hefner Robert E. Jr.
Sanford Joe F.
Haynes Deborah I.
Hefner Robert E. Jr.
Sanford Joe F.
Smart & Biggar
The Dow Chemical Company
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