Stock material or miscellaneous articles – Composite – Of polyamidoester
Patent
1998-11-24
2000-08-22
Short, Patricia A.
Stock material or miscellaneous articles
Composite
Of polyamidoester
4284258, 428460, 428463, 428522, 428524, 4273855, 4273883, 525161, 525162, 525163, B32B 2730, B32B 2742, C09D13304, C09D16120
Patent
active
061069515
ABSTRACT:
The invention provides a process that includes a first step of reacting the hydroxyl groups of a acrylic resin having hydroxyl groups and carbamate groups with a compound that converts the hydroxyl groups to new groups unreactive with an aminoplast crosslinker; a second step of combining the acrylic resin reaction product with at least an aminoplast crosslinker to form a coating composition; and a third step of applying the coating composition to a substrate and curing the applied coating layer, in which substantially no ether linkages are formed. Aminoplast crosslinkers are desirable for other reasons such as providing high solids coatings having excellent appearance that cure under moderate conditions. Avoiding the ether linkages that could be formed by reaction of aminoplast crosslinkers with hydroxyl groups improves the resistance of the cured coating to environmental etch.
REFERENCES:
patent: 5356669 (1994-10-01), Rehfuss
patent: 5552497 (1996-09-01), Taylor
Ohrbom Walter H
Rehfuss John W.
St. Aubin Donald L.
BASF Corporation
Budde Anna M.
Short Patricia A.
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