Patent · US Active

Hyperbranched polyether polyol and urethane resin composition

US8703898B2 · kind B2 · utility

0Cited by

4References

9Claims

0Family size

Assignee

DIC CORPORATION · JP

Inventors

Rainer B. Frings · Berlin, DE
Toshihiro Ooki · Takaishi, JP
Yasuhiro Takada · Yokohama, JP
Hitoshi Hayakawa · Nagano, JP

Key dates

Filing date	Jun 20, 2006
Grant date	Apr 22, 2014
Priority date	—
Expiry date	Apr 9, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L75/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A hyperbranched polyether polyol obtained by a ring-opening reaction between a hydroxyalkyloxetane (a1) and a monofunctional epoxy compound (a2), wherein the polyether polyol includes a primary hydroxyl group (H1) and a secondary hydroxyl group (H2) in the molecular structure thereof, and has a number average molecular weight (Mn) of 1,000 to 4,000 and a hydroxyl value of 150 to 350 mg·KOH/g.

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