Patent · US Active

Process for producing polycondensation product

US9018337B2 · kind B2 · utility

4Cited by

32References

17Claims

0Family size

Assignee

CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

Liyi Chen · Tokyo, JP
Jan Kluegge · Shanghai, CN

Key dates

Filing date	Jan 26, 2011
Grant date	Apr 28, 2015
Priority date	—
Expiry date	Jan 26, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2103/40
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention relates to a process for producing a polycondensation product by polycondensing monomers including (A) an aromatic or heteroaromatic compound containing a polyether chain, (B) optionally an aromatic or heteroaromatic compound which is different from monomer (A), and (C) an aldehyde, in the presence of a protonation catalyst, wherein the aldehyde is provided by a fast-releasing aldehyde source and a slow-releasing aldehyde source.

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