Oligomers and polymers containing sulfinate groups and...

Details Oligomers and polymers containing sulfinate groups and... Oligomers and polymers containing sulfinate groups and...

2008-11-26

2011-10-04

Truong, Duc (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S319000, C525S327500, C525S331200, C525S331800, C525S340000, C525S343000, C525S348000, C525S359100, C525S359200, C525S359300, C525S375000, C525S385000, C525S535000

Reexamination Certificate

active

08030414

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.

REFERENCES:
patent: 7288599 (2007-10-01), Kerres et al.

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