Polyimide oligomers and blends

Details Polyimide oligomers and blends Polyimide oligomers and blends

1994-04-25

1996-05-14

Schofer, Joseph L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528183, 528220, 528289, 528185, 525422, C08G 7310

Patent

active

055168760

ABSTRACT:
Polyimide oligomers include (1) linear, monofunctional crosslinking oligomers prepared by condensing a monoanhydride end cap with a diamine that includes alternating ether and "sulfone" (--SO.sub.2 --, --S--, --CO--, --(CF.sub.3).sub.2 C--, or --(CH.sub.3).sub.2 C--) linkages connecting alternating aromatic radicals and with a dianhydride (or dianhydride mixture), particularly the unsaturated, aliphatic dianhydride commonly known as MCTC; (2) linear, mono- or difunctional crosslinking oligomers prepared by condensing an amine end cap with a diamine and a dianhydride; and (3) multidimensional, crosslinking oligomers having an aromatic hub and at least three radiating arms connected to the hub, each arm including a crosslinking end cap at its distal end and at least one imide linkage. Blends, prepregs, and composites can be prepared from the oligomers. Multidimensional oligomers can be prepared using etheranhydride intermediates or etheramine intermediates formed by reacting a suitable hub with nitrophthalic anhydride or aminophenol.

REFERENCES:
patent: 3528950 (1970-09-01), Lubowitz
patent: 3565549 (1971-02-01), Lubowitz et al.
patent: 3647529 (1972-03-01), Lubowitz et al.
patent: 3745149 (1973-07-01), Serafini et al.
patent: 3781249 (1973-12-01), Lubowitz
patent: 3998786 (1976-12-01), D'Alelio
patent: 4055543 (1977-10-01), D'Alelio
patent: 4075171 (1978-02-01), D'Alelio
patent: 4142870 (1979-03-01), Lovejoy
patent: 4244853 (1981-01-01), Serafini et al.
patent: 4251417 (1981-02-01), Chow et al.
patent: 4251418 (1981-02-01), Chow et al.
patent: 4251420 (1981-02-01), Antonoplos et al.
patent: 4299946 (1981-11-01), Balme et al.
patent: 4376710 (1983-03-01), Gardos et al.
patent: 4381363 (1983-04-01), Reinhart, Jr.
patent: 4389504 (1983-06-01), St. Clair et al.
patent: 4414269 (1983-11-01), Lubowitz et al.
patent: 4418181 (1983-11-01), Monacelli
patent: 4438280 (1984-03-01), Monacelli
patent: 4476184 (1984-10-01), Lubowitz et al.
patent: 4536559 (1985-08-01), Lubowitz et al.
patent: 4547553 (1985-10-01), Lubowitz et al.
patent: 4576857 (1986-03-01), Gannett et al.
patent: 4579957 (1986-04-01), Kanayama et al.
patent: 4584364 (1986-04-01), Lubowitz et al.
patent: 4624888 (1986-11-01), St. Clair et al.
patent: 4661604 (1987-04-01), Lubowitz et al.
patent: 4675414 (1987-06-01), DeFusco et al.
patent: 4680377 (1987-07-01), Matsumura et al.
patent: 4684714 (1987-08-01), Lubowitz et al.
patent: 4695610 (1987-09-01), Egli et al.
patent: 4739030 (1988-04-01), Lubowitz et al.
patent: 4772722 (1988-09-01), Lukacs, III
patent: 4847333 (1989-07-01), Lubowitz et al.
patent: 4851495 (1989-07-01), Lubowitz et al.
patent: 4851501 (1989-07-01), Lubowitz et al.
patent: 4868270 (1989-09-01), Lubowitz et al.
patent: 4871475 (1989-10-01), Lubowitz et al.
patent: 4876328 (1989-10-01), Lubowitz et al.
patent: 4935523 (1990-06-01), Lubowitz et al.
patent: 4958031 (1990-09-01), Sheppard et al.
patent: 4981922 (1991-01-01), Sheppard et al.
patent: 4985568 (1991-01-01), Lubowitz et al.
patent: 4990624 (1991-02-01), Sheppard et al.
patent: 5071941 (1991-12-01), Lubowitz et al.
patent: 5116935 (1992-05-01), Lubowitz et al.
patent: 5175233 (1992-12-01), Lubowitz et al.
patent: 5175234 (1992-12-01), Lubowitz et al.
Takeichi, et al. "Star and Linear Imide Oligomers containing End caps". Macromolecules, V 19, 2093-2102, 1986.
Stoessel, et al. "High performance composites from polyimide matrix resin that utilize a cross linking reaction of biphenylene End-caps with acetylene units in the main chain," J. of App. Polym. Sci, V. 36, 1847-64 (1988).
Takeichi, et al, "Biphenylene End-capped Imide Oligomers having Internal Acetylene Groups in the Backbone" Macromolecules, 1986, 19, 2103-2108.
Vannucci "PMR Polyimide Compositions for Improved Performance at 371.degree.C", NASA Technical Memorandum, Report No. NASA TM-88942, Catalog No. N87-16071, Apr. 1987.
EPO Search Report, Application No. EP 88 10 0073, analogous to U.S.S.N. 07/046,376 (great grandparent).
EPO Search Report, Application No. EP 88 11 7126, analogous to U.S.S.N. 07/046,376 (great grandparent).
Takeichi, et al. "Readily Processable Imide Oligomers Containing Perfluoroisopropylidene Connecting Units and Readlive Acetylenic and Biphenylene Groups." Macromolecules, 1986, 19, 2108-2114.

Affiliated with

Also associated with

Rating

Polyimide oligomers and blends does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyimide oligomers and blends, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyimide oligomers and blends will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1896671