RTM and RI processible tailorable polyimide resin systems...

Details RTM and RI processible tailorable polyimide resin systems... RTM and RI processible tailorable polyimide resin systems...

2007-12-27

2011-10-04

Seidleck, James J (Department: 1765)

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

Synthetic resins

From aldehyde or derivative thereof as reactant

C528S170000, C528S171000, C528S172000, C528S173000, C528S174000, C528S175000, C528S176000, C528S329100, C525S420000, C525S422000

Reexamination Certificate

active

08030433

ABSTRACT:
Tailorable polyimide resin systems suitable for processing by resin transfer molding (RTM) and resin infusion (RI) methods. An exemplary resin system includes first and second prepolymer components present in respective amounts to provide the desired processibility. The cured polyimide system exhibits high glass transition temperature and other properties required for gas turbine engine applications. The first and second prepolymer components independently comprise a monomeric mixture or a reaction product of a diamine component, a dianhydride component, and an end group component.

REFERENCES:
patent: 5115087 (1992-05-01), Sheppard et al.
patent: 6184333 (2001-02-01), Gray
patent: 9426493 (1994-11-01), None
Prosecution Documents in related case, U.S. Appl. No. 11/965,083.
EP Search Report and Opinion dated Apr. 26, 2010.
EP Search Report and Opinion dated Apr. 21, 2009.

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