Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1980-02-28
1981-06-23
Phynes, Lucille M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528302, 528309, 560 76, 525437, 525444, C08G 6312
Patent
active
042751896
ABSTRACT:
The invention is directed to a polyester resin, and a method for making it, for use in a powder coating. The resin comprises on oligomer of neopentyl glycol or cyclohexane dimethanol and terephthalic acid, isophthalic acid or dimethyl terephthalate in a mole ratio between about 1.15 and about 1.50, the oligomer being reacted with trimellitic anhydride to provide a trimellitate with the mole ratio oligomer to trimellitate being in the range of between about 2.5 and 5.5. The trimellitate is reacted with a dicarboxylic anhydride or acid with the mole ratio of trimellitate to dicarboxylic anhydride or acid between about 1.5 and about 2.5. The polyester resin has an ICI viscosity at 200.degree. C. between about 20 poises and about 60 poises, an acid value of less than 30, a hydroxyl value between about 20 and about 60, and an equivalent weight between about 935 and about 2800.
REFERENCES:
patent: 4024111 (1977-05-01), Thomas et al.
patent: 4124570 (1978-11-01), Scheibelhoffer et al.
Danick Charles
Panandiker K. A. Pai
Cargill Incorporated
Phynes Lucille M.
LandOfFree
Neopentyl glycol, terephthalate, dicarboxy acid, trimellitate th does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Neopentyl glycol, terephthalate, dicarboxy acid, trimellitate th, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neopentyl glycol, terephthalate, dicarboxy acid, trimellitate th will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2208874