Patent · US Expired

Process for the production of polyurethane foams

US3970618A · kind A · utility

7Cited by

6References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Gert Jabs
Gunther Loew
Johannes Niggemann · Leverkusen, DE

Key dates

Filing date	Jan 30, 1974
Grant date	Jul 20, 1976
Priority date	—
Expiry date	Jan 30, 1994

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S521/905
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Process for the production of a hydrophilic polyurethane foam having a high water retention capacity by reacting a polyhydroxyl compound having an OH number from 900-1800 and a polyisocyanate containing an aromatically bound isocyanate group and containing a urethane, urea, carbodiimide, allophanate, isocyanurate or biuret group.

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