Hydrocarbon-terminated polyether-polyamide block copolymers...

Details Hydrocarbon-terminated polyether-polyamide block copolymers... Hydrocarbon-terminated polyether-polyamide block copolymers...

2005-03-21

2010-06-29

Lipman, Bernard (Department: 1796)

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

Synthetic resins

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

C525S425000, C525S432000

Reexamination Certificate

active

07745546

ABSTRACT:
A composition comprising (a) a resin composition comprising a block copolymer of the formula hydrocarbon-polyether-polyamide-polyether-hydrocarbon; and (b) a polar liquid. The block copolymer may be prepared by a process comprising reacting together reactants comprising dimer acid, diamine, and a polyether having termination at one end selected from amine, hydroxyl and carboxyl, and termination at another end selected from hydrocarbons. The polar liquid may be one or more of an aromatic liquid, a polar aprotic liquid, a ketone-containing liquid, an ester-containing liquid, an ether-containing liquid, an amide-containing liquid and a sulfoxide-containing liquid. The composition may be a gel at room temperature.

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