Patent · US Expired

Rigid polyurethane foams prepared from polyvinyl acetate/allyl alcohol polyols, and process for making same

US5047441A · kind A · utility

2Cited by

8References

27Claims

0Family size

Assignee

BASF SE

Inventors

Eric J. Lind · Naperville, US
Manfred Genz · Ostercappeln, DE
Michele Lee · San Fernando, US
Thomas B. K. Lee · Southgate, US

Key dates

Filing date	Aug 10, 1989
Grant date	Sep 10, 1991
Priority date	—
Expiry date	Aug 10, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S521/914
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polyurethane systems are disclosed utilizing polyvinyl acetate/allyl alcohol random copolymers to produce rigid polyurethane foams and a process for producing the same. The resulting foams exhibit improved K-factors, utilized reduced amounts of fluorocarbons as blowing agents, and maintained insulating properties when formulated with increased amounts of water.

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