Stock material or miscellaneous articles – Composite – Of polyester
Patent
1987-01-09
1988-06-21
Short, Patricia
Stock material or miscellaneous articles
Composite
Of polyester
4273855, 4273882, 525 27, 525 41, 525445, 528298, C08L 6706
Patent
active
047525339
ABSTRACT:
Disclosed is a method of making a non-aqueous solventless polyester varnish. A composition is prepared which comprises about one mole of maleic anhydride, about 0.25 to about 0.35 mole of dicyclopentadience, about 0.65 to about 0.75 mole of ethylene glycol, and about 0.35 to about 0.45 mole of a polyol. The composition is heated to about 150.degree. to about 170.degree. C., and then to about 200.degree. to about 210.degree. C., which condenses out water, forms an unsaturated polyester and, reduces the acid number to less than about 45. The composition is cooled to a temperature below about 150.degree. C., and about 0.1 to about 0.5% of an inhibitor is added to said composition, followed by an unsaturated aromatic compound which can be styrene, vinyl toluene, or mixtures thereof, in a ratio of about 20 to about 40 pbw unsaturated aromatic compound to about 60 to about 80 pbw unsaturated polyester. When it is desirable to use the composition, 0.5 to about 1.5 percent by weight of a catalyst is added to the composition. The composition is applied to a rotating apparatus and is cured at about 150.degree. to about 160.degree. C. for about 45 to about 60 minutes.
REFERENCES:
patent: 3347806 (1967-10-01), Zimmermann
patent: 4029848 (1977-06-01), Nelson
patent: 4246367 (1981-01-01), Curtis
patent: 4309519 (1982-01-01), Obara
patent: 4525427 (1985-06-01), Bayha
Smith, et al., "Proceedings of the 22nd Annual Technical Conference", SPI, Reinforced Plastics Division, Washington, D.C. 1967.
Mich, Jr. A.
Short Patricia
Westinghouse Electric Corp.
LandOfFree
Non-aqueous solventless polyester varnish does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-aqueous solventless polyester varnish, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-aqueous solventless polyester varnish will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-929365