Hardeners for powder coating compositions based on polyester res

Details Hardeners for powder coating compositions based on polyester res Hardeners for powder coating compositions based on polyester res

1992-03-25

1994-06-21

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528220, 528271, 528370, 528403, 525437, 525449, 525471, 525523, 525533, C08F 2020

Patent

active

053229070

ABSTRACT:
The invention relates to the use of polyglycidyl compounds as hardeners in powder coating compositions based on polyester resins which react with epoxy groups, which compounds are polyglycidyl esters of formula (I) or (II) ##STR1## wherein in formula (I) R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen, C.sub.1 -C.sub.4 alkyl or radicals of formula (III) ##STR2## wherein A is a polymethylene group of 2 to 4 carbon atoms, and R.sub.5 and R.sub.6 are each independently of each other hydrogen, C.sub.1 -C.sub.4 alkyl or radicals of formula (III) or, when taken together, are an unsubstituted or a C.sub.1 -C.sub.4 alkyl-substituted methylene or polymethylene group of 2 to 7 carbon atoms, but with the proviso that at least two of the substituents R.sub.1 to R.sub.6 are radicals of formula (III),
and, in formula (II)

REFERENCES:
patent: 3344117 (1967-09-01), Bamford et al.
patent: 3397254 (1968-08-01), Wynstra et al.
patent: 3941725 (1976-03-01), Schmitter et al.
patent: 4102701 (1978-07-01), Campbell et al.
patent: 4112012 (1978-09-01), de Cleur et al.
patent: 4145370 (1979-03-01), Sreeves
patent: 4147737 (1979-04-01), Sein et al.
patent: 4340698 (1982-07-01), De Jongh et al.
patent: 4681811 (1987-07-01), Simpson et al.
patent: 4703101 (1987-10-01), Singer et al.
Henry Lee Kris Neville, "Handbook of Epoxy Resins" MacGraw-Hill, Inc. 1967 p. 2-2.
Ullmann's Encyclopedia of Industrial Chemistry, Fifth Edition, vol. A9, p. 559.
Handbook of Epoxy Resins, MacGraw-Hill Inc. 1967, Appendix 5-1.
Derwent Abst. 90-134038/18.

Affiliated with

Also associated with

Rating

Hardeners for powder coating compositions based on polyester res does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hardeners for powder coating compositions based on polyester res, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hardeners for powder coating compositions based on polyester res will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2221364