Patent · US Active

Use of swellable polymer for sealing

US8309669B2 · kind B2 · utility

1Cited by

2References

19Claims

0Family size

Assignee

Evonik Röhm GmbH · DE

Inventors

Bardo Schmitt · Mainz, DE
Mario Gomez · Chesterfield, US
Martina Ebert · Domat/Ems, CH

Key dates

Filing date	May 9, 2008
Grant date	Nov 13, 2012
Priority date	—
Expiry date	Nov 11, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K2200/0625
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A method for producing a swellable polymer by polymerizing a composition containing at least one polyalkylene glycol di(meth)acrylate having a weight-average molecular weight from 2500 g/mol to 10000 g/mol, wherein the polymer contains at least 50.0% by weight based on the total weight of the polymer of said at least one polyalkylene glycol di(meth)acrylate.

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