Oligomers and polymers containing sulfonite groups and...

Details Oligomers and polymers containing sulfonite groups and... Oligomers and polymers containing sulfonite groups and...

2007-04-10

2007-04-10

Truong, Duc (Department: 1711)

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

Synthetic resins

From sulfur-containing reactant

C528S373000, C525S535000, C526S287000, C429S122000, C424S070110

Reexamination Certificate

active

10488420

ABSTRACT:
The invention relates to novel polymers or oligomers containing at least sulfonite groups (P-(SO2)nX, X=1−(n=1), 2−(n=2) or 3−(n=3) valent metal cation or H+or ammonium ion NR4+wherein 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. The invention also relates to polymers and polymer(blend) membranes which are obtained by further reacting the obtained 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: 0053455 (1982-06-01), None
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Holmes-Farley et al, The mechanism of cure initiation of a surface activated adhesive, Jouranl of Adhesion science and technology, 5(5), 409-20 (English), 1991, Chem Abstract 116: 85180.
Hirsch et al, Potential anticancer agents, Jounal of Medicanal Chemistry, 8(1), 10-14 (English) 1965, Chem Abstract 62: 29497.
Garten et al, Rubberlike products by emulsion polymerization, 1958, Chem Abstract 54: 53071.

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