Patent · US Active

Method for preparing an imidized polymer

US8410031B2 · kind B2 · utility

1Cited by

5References

14Claims

0Family size

Assignee

LANXESS Elastomers B.V. · NL

Inventors

Patric Meessen · Verviers, BE
Johannes Hendrik Geesink · Schinnen, NL

Key dates

Filing date	Nov 4, 2005
Grant date	Apr 2, 2013
Priority date	—
Expiry date	Jul 14, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2070/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A process is provided for preparing an imidized polymer in a mixing or kneading device, by a reaction in the presence of an acid of a mixture containing a polymer having anhydride groups or derivatives thereof and an aromatic polyamine compound. A solid multifunctional viscosity modifier is also provided which includes a polymer having between 0.1 and 10 functional groups per 1000 C-atoms. The functional groups include aromatic amine based imide groups with a ratio of imide groups to the functional groups being more than 0.85.

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