The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2007
Filed:
Sep. 02, 2002
Thomas Häring, 70619 Stuttgart, DE;
Jochen Kerres, 73760 Ostfildern, DE;
Wei Zhang, 70569 Stuttgart, DE;
Thomas Häring, 70619 Stuttgart, DE;
Jochen Kerres, 73760 Ostfildern, DE;
Wei Zhang, 70569 Stuttgart, DE;
Other;
Abstract
The invention relates to novel polymers or oligomers containing at least sulfonite groups (P-(SO)X, X=1−(n=1), 2−(n=2) or 3−(n=3) valent metal cation or Hor ammonium ion NRwherein R=alkyl, aryl, H), which are obtained by completely or partially reducing polymers or oligomers containing at least SOY-groups (Y=F, Cl, Br, I, OR, NR(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.