Compositions adapted for chain linking

Details Compositions adapted for chain linking Compositions adapted for chain linking

2006-08-01

2006-08-01

Robertson, Jeffrey B. (Department: 1712)

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

Synthetic resins

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

C525S395000, C525S396000, C525S397000, C525S535000, C525S536000, C528S290000, C528S294000, C528S295000

Reexamination Certificate

active

07084213

ABSTRACT:
A polymer composition comprising chains of at least one aromatic polymer or a mixture thereof together with at least one chain linking component wherein the at least one aromatic polymer comprises polymer chains of number average molecular weight (Mn) in a first range and characterised by a polymer flow temperature, and having at least one reactive end group, and wherein the at least one chain linking component comprises at least two linking sites, characterised in that a plurality of the polymer chain end groups are adapted to react with the linking sites at chain linking temperature in excess of the polymer flow temperature to form linked polymer chains of number average molecular weight (Mn) in a second range which is in excess of the first range, substantially thermoplastic in nature; process for the preparation thereof; prepreg, composite or shaped product obtained therewith and the use thereof.

REFERENCES:
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patent: 5266610 (1993-11-01), Malhotra et al.
patent: 5464891 (1995-11-01), Nagaoka et al.
patent: 5741846 (1998-04-01), Lohmeijer et al.
patent: 5876851 (1999-03-01), Matsumura et al.
patent: WO 8607368 (1986-12-01), None
patent: WO 94 02537 (1994-02-01), None

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