Title:
AMINOPLAST-BASED CROSSLINKERS AND POWDER COATING COMPOSITIONS CONTAINING SUCH CROSSLINKERS
Document Type and Number:
WIPO Patent Application WO2002024799
Kind Code:
A3
Abstract:
The present invention provides a crosslinking agent having reactive benzoxazine groups that is the ungelled reaction product of (a) at least one mono-hydroxy aromatic compound and (b) at least one aminotriazine compound having one or less non-alkylated NH group present in a molar ratio of reactant (a) to reactant (b) ranging from 1.0 to 3.0: 1.0, provided that where reactant (a) is a single ring monohydroxy aromatic compound, the molar ratio of reactant (a) to reactant (b) ranges from 1.0 to 1.8:1.0 and from 2.2 to 3.0:1.0. The crosslinking agent is essentially free of hydroxyl functionality and has a glass transition temperature of at least 25 DEG C. The present invention is further directed to methods for preparing and using these crosslinking agents.
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Inventors:
AMBROSE RONALD R
CHASSER ANTHONY M
HU SHENGKUI
SCHNEIDER JOHN R
SMITH JACKIE L
CHASSER ANTHONY M
HU SHENGKUI
SCHNEIDER JOHN R
SMITH JACKIE L
Application Number:
PCT/US2001/028921
Publication Date:
August 01, 2002
Filing Date:
September 14, 2001
Export Citation:
Assignee:
PPG IND OHIO INC (US)
International Classes:
C08G12/42; C08G14/06; C08G14/12; C08G59/50; C08L61/28; C08L61/32; C08K5/357; C08L61/34; C08L101/00; C09D5/03; C09D161/20; C09D161/32; C09D161/34; C09D163/00; C09D167/00; C09D175/04; C09D201/00; C09D201/02; (IPC1-7): C08K5/00; C08G12/42; C08L61/28; C08L61/32; C09D161/32; C09D161/34
Foreign References:
| US4217377A | 1980-08-12 | |||
| GB1471183A | 1977-04-21 | |||
| GB622675A | 1949-05-05 | |||
| US4698401A | 1987-10-06 | |||
| US5268402A | 1993-12-07 |
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