Back to results
US 4,360,634 AGranted
Polyester resins containing diene oligomers
AssigneeThe Dow Chemical Company
InventorDonald L. Nelson
Life of this patent
Estimating the term…
Abstract
Polyester resins are prepared by reacting unsaturated dicarboxylic acid anhydrides with water, a diene oligomer, and a polyol or and an alkylene oxide. The polyester resins can be blended with unsaturated monomers and various fiber to give cured laminates. The advantage of this invention is that the substitution of the diene oligomers gives lower cost resins with about the same properties.
Claims11
The resin produced by reacting
- (A) an alpha, beta ethylenically unsaturated dicarboxylic anhydride containing 0-40 mole percent of saturated or unsaturated polybasic acids or anhydrides which are other than said anhydride,
- (B) about 0.2 to about 3.0 moles of water per mole of unsaturated anhydride,
- (C) about 0.1 to about 1.2 moles of diene oligomer per mole of unsaturated anhydride, and
- (D) about 0.4 to about 1.3 moles of a polyol, or an alkylene oxide, or mixtures thereof per mole of unsaturated anhydride.
1 more element
The resin produced by reacting
- (A) an alpha, beta ethylenically unsaturated dicarboxylic anhydride containing 0-40 mole percent of saturated or unsaturated polybasic acids or anhydrides which are other than said anhydride,
- (B) about 0.1 to about 1.1 moles of water per mole of unsaturated anhydride,
- (C) about 0.4 to about 0.7 moles of diene oligomer per mole of unsaturated anhydride wherein the oligomer is produced by heating dicyclopentadiene, and
- (D) about 0.7 to about 0.9 moles of a polyol, per mole of unsaturated anhydride.
1 more element
Dependencies are inferred from the claim text.