Compositions comprising biscitraconimide, bisitaconimide,...

Details Compositions comprising biscitraconimide, bisitaconimide,... Compositions comprising biscitraconimide, bisitaconimide,...

2007-04-26

2011-11-01

Cameron, Erma (Department: 1715)

Coating processes

With post-treatment of coating or coating material

Heating or drying

C427S385500, C427S389900, C427S394000

Reexamination Certificate

active

08048489

ABSTRACT:
The invention pertains to a prepolymer composition comprising a mixture of monomers, oligomers, and polymers obtainable by polymerization of unsaturated monomers consisting of at least one of biscitraconimide, bisitaconimide, and citraconimido-itaconimide, and optionally (co)curable compound selected from bismaleimides, citraconamidomaieimides, and itaconamido maleimides, wherein 5-55 wt. % is monomer, 20-80 wt. % is oligomer having a molecular weight 300 to 3,000, and 10-50 wt. % is polymer having a molecular weight 3,000 to about 80,000, whereas the total content of monomers, oligomers, and polymers in the composition is at least 90 wt. %. The prepolymer can be used for making laminates and prepregs by curing the composition to a polymer.

REFERENCES:
patent: 5194567 (1993-03-01), Lewis
patent: 5230666 (1993-07-01), Lewis
patent: 0 407 661 (1991-01-01), None
patent: WO 91/02013 (1991-02-01), None
International Search Report and Written Opinion (8 pages), for PCT/EP2007/054104, Nov. 2, 2007.

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