Patent · US Active

Polyureas made from aminocrotonates

US9051489B2 · kind B2 · utility

0Cited by

3References

18Claims

0Family size

Assignee

United States of America as represented by the Secretary of the Air Force · US

Inventors

Jozef Verborgt · Holiday, US
Arthur A. Webb · Bethesda, US

Key dates

Filing date	Apr 29, 2014
Grant date	Jun 9, 2015
Priority date	—
Expiry date	Apr 29, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/16
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A polymer made by reacting a polyisocyanate with a compound having the formula below. R1 is an organic group. R2 is an aliphatic group. R3 is an aliphatic group. The polyisocyanate reactants are at least 50 mol % aromatic polyisocyanates. The reaction forms urea groups from the isocyanate groups of the polyisocyanate and the NH groups of the compound.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.