Patent · US Expired

Urea catalyst for preparation of sucrose polyols useful for rigid polyurethane foams

US4820810A · kind A · utility

15Cited by
13References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 30, 1986
Grant dateApr 11, 1989
Priority date—
Expiry dateOct 30, 2006

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08G2110/005
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

Catalytic quantities of urea are used in the alkoxylation of aqueous sucrose to prepare low color polyols useful in rigid polyurethane foams.

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