Patent · US Expired

Rapidly crosslinking fluoropolymer

US6743874B2 · kind B2 · utility

2Cited by

11References

2Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

David Harrison · Leverkusen, DE
Wilhelm-Franz Biener · Bensberg, DE

Key dates

Filing date	Feb 19, 2003
Grant date	Jun 1, 2004
Priority date	—
Expiry date	Feb 27, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a rapidly cross-linking liquid fluoropolymer that contains as the essential components tetrafluoroethylene and at least one compound from the group consisting of diiodomethane, 1,2-diiodo-1,1-difluoroethane, 1-iodo-2-bromo-1,1-difluoroethane, 1-bromo-2-iodo-1,1-difluoroethane and/or 1,2-dibromo-1,1-difluoroethane that has certain fractions of the final group of the formula —CH2—X with X=Br and/or iodine, and iodine/bromine contents in the range of from 0.05 to 1 wt.-%. and that has a defined molecular weight and viscosity. The invention further relates to a method for producing said fluoropolymer and to its use.

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