Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1997-09-23
1999-01-12
Cain, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524440, C08K 300
Patent
active
058591109
ABSTRACT:
A method is described for decreasing bleed from an organic-based formulation comprising incorporating in the organic-based formulation an anti-bleed composition having (a) a monomer end-to-end distance of less than 12.2 angstroms or greater than 12.6 angstroms; (b) a ratio of formula weight to number of heavy atom bonds of 13 to 16 grams; (c) a ratio of formula weight to end-to-end distance of 18 to 22 grams/angstrom; (d) a ratio of heavy atoms to heavy atom bonds of 1 to 1.1; (e) a ratio of weight fraction of carbon to formula weight of 0.7 to 0.95; (f) a ratio of formula weight to number of carbon to carbon bonds of 14 to 20 grams; and/or (g) 1 to 2 heteroatoms.
Also described as an organic-based formulation is disclosed that comprises a filler, a resin and an organic-based formulation an anti-bleed composition having (a) a monomer end-to-end distance of less than 12.2 angstroms or greater than 12.6 angstroms; (b) a ratio of formula weight to number of heavy atom bonds of 13 to 16 grams; (c) a ratio of formula weight to end-to-end distance of 18 to 22 grams/angstrom; (d) a ratio of heavy atoms to heavy atom bonds of 1 to 1.1; (e) a ratio of weight fraction of carbon to formula weight of 0.7 to 0.95; (f) a ratio of formula weight to number of carbon to carbon bonds of 14 to 20 grams; and/or (g) 1 to 2 heteroatoms.
REFERENCES:
patent: 5150195 (1992-09-01), Nguyen
patent: 5155066 (1992-10-01), Nguyen
Michael R. Marks et al., "An Experimental Study of Die Attach Polymer Bleedout in Ceramic Packages", 1994 Thin Solid Films, pp. 54-60.
P.G. de Gennes, "The Dynamics of Wetting", pp. 173-179.
"Describing the System", Discover, May 1994, pp. 2-1 to 2-5.
"Forcefields", Discover, May 1994, pp. 3-1 and 3-9.
Lieng-Haung Lee, "Roles of Molecular Interactions in Adhesion, Adsorption, contact Angle and Wettability", presented to the American Chemical Society Symposium on Adhesion, Contact Angle and Wettability, San Francisco, California, Apr. 1992, pp. 583-634.
Iwamoto Nancy E.
Pedigo Jesse L.
Cain Edward J.
Johnson Matthey Inc.
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