Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2006-01-03
2006-01-03
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S328500, C525S540000, C528S391000, C528S373000, C528S482000, C528S486000, C528S491000, C528S499000, C528S501000, C528S50200C, C528S503000
Reexamination Certificate
active
06982303
ABSTRACT:
A covalently cross-linked polymer or polymer membrane consisting of one or more polymers, which can bear the following functional groups (M=Hal(F, Cl, Br, I), OR, NR2; R=alkyl, hydroxyalkyl, aryl; (Me=H, Li, Na, K, Cs, or other metal cations or ammonium ions): a) precursors of cation exchange groups: SO2M and/or POM2and/or COM b) sulphinate groups SO2Me and which can be covalently cross-linked using the following organic compounds: a) di-, tri- or oligofunctional haloalkanes or haloaromatics, which have been reacted with sulphinate groups SO2Me, whereby the following cross-linking bridges are present in the polymer/in the polymer blend/in the polymer membrane: (Y=cross-linking bridges, X=Hal (F, Cl, Br, I), OR, (CH2)x—; -arylene-; —(CH2)x-arylene-; CH2arylene-CH2—, x=3-12): polymer-SO2Y—SO2-polymer and/or b) compounds containing the following groups: Hal-(CH2)x—NHR, one side of which (Hal-) has been reacted with sulphinate groups SO2ME and the other side (—NHR) with SO2M groups, whereby the following cross-linking bridges are present in the polymer/in the polymer blend/in the polymer membrane: polymer-SO2—(CH2)x—NR—SO2polymer and/or c) compounds containing the following groups: NHR—(CH2)x—NHR, which have been reacted with sulphinate groups SO2ME, whereby the following cross-linking bridges are present in the polymer/in the polymer blend/in the polymer membrane: polymer-SO2—NR—(CH2)x—NR—SO2-polymer.
REFERENCES:
patent: 5429759 (1995-07-01), Andrieu et al.
patent: WO 99/28292 (1999-06-01), None
patent: WO 00/15691 (2000-03-01), None
10/051,196 Claims'copy.
International Search Report.
Häring Thomas
Kerres Jochen
Tang Chy-Ming
Zhang Wei
MacPherson Kwok & Chen & Heid LLP
Truong Duc
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