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US 10,654,965 B2Granted
Method of producing five-carbon ring-containing compound and five-carbon ring derivative-containing polyurethane, and five-carbon ring derivative-containing polyurethane
AssigneeNational Chung Shan Institute of Science and Technology
InventorsWen-Chiung Su, Chien-Hsin Wu, Yu-Ru Lin, Sheng-Hong Dai, Ru-Jong Jeng
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Abstract
A method of producing a five-carbon ring derivative-containing polyurethane involves introducing a DCPD-derived 5-carbon cyclic compound into a polyurethane material and effectuating polymerization in the presence of a solvent of a low boiling point and low toxicity to produce a five-carbon ring derivative-containing polyurethane of a high molecular weight.
Claims7
A method of producing a five-carbon ring derivative-containing polyurethane, the method comprising the steps of:
- (a) allowing a diisocyanate compound to react with a polyethylene glycol compound and thus produce a prepolymer;
- and
- (b) allowing the prepolymer to react continuously with a 5-carbon cyclic compound expressed by formula (I) or formula (II) below,
- and thus produce a five-carbon ring derivative-containing polyurethane.
1 more element
Dependencies are inferred from the claim text.