Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1991-02-20
1993-02-23
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528125, 528170, 528172, 528173, 528176, 528185, 528188, 528190, 528191, 5283291, 528350, 528353, 549234, 549382, C08G 6300, C08G 7310, C07D31178, C07D30777
Patent
active
051891387
ABSTRACT:
Rigid fluorine-containing compounds, monomers, and polymers based on pentacyclic core systems, such as 12H,14H-5, 7-dioxapentacene with perfluoroalkyl and/or aryl groups in the 12, 14 positions, and 5H,12H-7, 14-dioxapentacene, with perfluoroalkyl and/or aryl groups in the 5,12 positions. These monomers have utility in the preparation of advanced high-performance polymers, particularly polyimides. The rigid pentacyclic core decreases the coefficient of thermal expansion of the polymers, while the fluorinated substituents improve the dielectric constant and water absorption properties. Each monomer unit contains within its pentacyclic core two-O-bridges, and two --CRR.sub.f bridges (where R is aryl, substituted aryl or perfluoroalkyl, and R.sub.f is perfluoroalkyl).
REFERENCES:
patent: 5051520 (1991-09-01), Trofimenko
patent: 5097000 (1992-03-01), Trofimenko
patent: 5101006 (1992-03-01), Stults
Auman Brian C.
Trofimenko Swiatoslaw
E. I. Du Pont de Nemours and Company
Hampton-Hightower P.
Kight III John
LandOfFree
Compounds, monomers, and polymers based on perfluoroalkyl and pe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compounds, monomers, and polymers based on perfluoroalkyl and pe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compounds, monomers, and polymers based on perfluoroalkyl and pe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2206098