Fuel and hydrolysis resistant polyurethane

Details Fuel and hydrolysis resistant polyurethane Fuel and hydrolysis resistant polyurethane

1984-03-12

1984-12-11

Phynes, Lucille M.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

525437, 525440, 528 48, 528 64, 528288, C08G 1842

Patent

active

044879130

ABSTRACT:
A polyester polyurethane compound is formed by reacting trans-1,4-cyclohexanediisocyanate with a mixed polyester. The mixed polyester can be the copolymerization condensation product of an aliphatic dicarboxylic acid or an aromatic dicarboxylic acid, or a separate physical blend thereof reacted with a polyol. The polyurethane can also contain small amounts of non-extractable epoxies and carbodiimides. The urethane has very good hydrolytic stability in comparison with prior art polyurethane systems and also very good fuel resistance and anti-icing resistance. A preferred area of use is an aircraft fuel tanks and anti-icing components.

REFERENCES:
patent: 4235730 (1980-11-01), Schlicht
patent: 4247678 (1981-01-01), Chung

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