Patent · US Expired

Method for removing initiators from grafting products

US6465600B1 · kind B1 · utility

0Cited by

2References

18Claims

0Family size

Assignee

MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE

Inventors

Lothar Britsch · Meßkirch, DE
Egbert Muller · Langen (Hessen), DE
Josef Stohr · Nauheim, DE

Key dates

Filing date	Feb 5, 2001
Grant date	Oct 15, 2002
Priority date	—
Expiry date	Feb 5, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F251/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a process for removing an initiator of cerium (IV) salt from a graft product. The process may include washing the graft product with a mineral acid solution comprising ascorbic acid.

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