Patent · US Expired

Polyether polyols, polyol formulation containing them and their use in the production of hard polyurethane foams

US6107359A · kind A · utility

7Cited by

6References

9Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Karl Werner Dietrich · Odenthal, DE
Manfred Dietrich · Leverkusen, DE
Wilhelm Lamberts · Cologne, DE
Walter Klan · Leverkusen, DE

Key dates

Filing date	Oct 13, 1998
Grant date	Aug 22, 2000
Priority date	—
Expiry date	Oct 13, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2375/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polyol formulations, containing polyether polyols possessing 40 to 80 wt. % of tertiary amino groups and having an OH number of 300 to 500, preferably 350 to 420, obtainable by addition of exclusively propylene oxide to o-toluene diamine, which contain cyclopentane and/or n- and/or i-pentane and/or hydrofluoroalkanes as blowing agent, are used for the manufacture of rigid polyurethane foams by reacting with organic polyisocyanates, optionally further compounds with at least two hydrogen atoms reactive to isocyanates, optionally in the presence of water, and further blowing agents known per se as well as conventional auxiliaries and additives.

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