Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1999-05-27
2000-05-02
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528185, 528190, 528191, 528193, 528272, 528289, 528291, 528298, 528308, 528335, 528361, 528401, C08G 6302
Patent
active
060574178
ABSTRACT:
A polymer system having repeating units of the formula: ##STR1## wherein A is --H or --OH, x has a value of 0.5 to 1.0 and y has a value of 1.0-x, exhibits a high glass transition temperature (T.sub.g) and a low dielectric constant. The polymer system is useful in the area of microelectronic packaging.
REFERENCES:
patent: 5106940 (1992-04-01), Dang et al.
patent: 5136012 (1992-08-01), Dang et al.
patent: 5312895 (1994-05-01), Dang et al.
patent: 5492996 (1996-02-01), Dang et al.
T. Dang, P. Mather, M. Alexander, R. Spry, F. Arnold, Achieving High T.sub.g and Low Dielectric Constant Using Aromatic Benzoxazole Polymers, Polymer Preprints, vol. 39, No. 2, Aug. 1998, pp 804-805, published Jul. 16, 1998.
Alexander Max D.
Arnold Fred E.
Dang Thuy D.
Mather Patrick T.
Spry Robert J.
Acquah Samuel A.
Bricker Charles E.
Kundert Thomas L.
The United States of America as represented by the Secretary of
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