Patent · US Active

Oligomers and polymers containing sulfinate groups and method for the production thereof

US8030414B2 · kind B2 · utility

3Cited by

1References

4Claims

0Family size

Inventors

Thomas Häring · Stuttgart, DE
Jochen Kerres · Esslingen am Neckar, DE
Wei Zhang · Brecksville, US

Key dates

Filing date	Nov 26, 2008
Grant date	Oct 4, 2011
Priority date	—
Expiry date	Nov 26, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to novel polymers or oligomers containing at least sulfinate groups (P—(SO2)nX, X=1-(n=1), 2-(n=2) or 3-(n=3) valent metal cation or H+ or ammonium ion NR4+ where R=alkyl, aryl, H), which are obtained by completely or partially reducing polymers or oligomers containing at least SO2Y-groups (Y═F, Cl, Br, I, OR, NR2 (R=alkyl and/or aryl and/or H), N-imidazolyl, N-pyrazolyl) by means of suitable reducing agents in a suspension or in a solution form.Polymer and polymer(blend)membranes which are obtained by further reacting the received sulfinated polymers, especially by alkylation of the sulfinate groups with mono- di- or oligo functional electrophiles. The invention further relates to methods for producing the sulfinated polymers and for further reacting the sulfinated polymers with electrophiles by S-alkylation.

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