Patent · US Expired

Polyester polyols and their use as anchoring agents for polymer systems and as polymeric plasticizers

US5243013A · kind A · utility

3Cited by

1References

12Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Helmut Hurnik · Leverkusen, DE
Gerhard Trummelmeyer · Leichlingen, DE
Adolf Winkler · Leverkusen, DE

Key dates

Filing date	Apr 27, 1992
Grant date	Sep 7, 1993
Priority date	—
Expiry date	Apr 27, 2012

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L67/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The new polyester polyols, which have an acid value below 10, a hydroxyl value of 50 to 200, a hydroxyl functionality above 2 and a number average molecular weight M.sub.n of 800 to 5,000 and which are liquid at 23.degree. C. or are homogeneously soluble in di-2-ethylhexyl phthalate in a concentration of at least 70% by weight, the viscosity of the 70% solution being from 1 to 35 Pa.s, are used as anchoring agents for polymer systems and as polymeric plasticizers.

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