Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1996-02-20
1997-08-19
Krass, Frederick
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
528 94, 528 98, 528106, 528395, C08G 5940, C08G 6500
Patent
active
056589964
ABSTRACT:
The present invention relates to a novel oxirane pre-polymer comprised of the catalyzed or uncatalyzed reaction product of tris or tetraphenyl intermediates with a difunctional oxirane oligomer having at least one aromatic moiety and at least one aliphatic moiety, characterized in that substantially hydrolyzable oxygen atoms in said phenyl are bonded to said oligomers, and there is substantially no bonding between oligomer moieties. In a particularly preferred embodiment the present invention relates to a novel oxirane prepolymer comprising the reaction product of a phenyl intermediate with an inorganic oxide having at least one hydrolyzable oxygen and a difunctional oxirane oligomer aliphatic moiety characterized in that a majority of all hydrolyzable oxygen atoms in said oxide are bonded to at least one of the phenyl groups of the tris-phenyl and one phenyl group of the tris-phenyl group is bonded to said oligomer and there is substantially no bonding between oligomer moieties. The present invention also relates to a novel pre-polymer, said pre-polymer comprising of three aromatic groups cross-linked through a carbon ethane group, said aromatic groups having three hydroxyl groups, the prepolymer moiety being the reaction product of one hydroxyl group with one oxirane group of a difunctional oxirane oligomer having at least one aromatic moiety and at least one oxirane aliphatic moiety.
REFERENCES:
patent: 3370038 (1968-02-01), Barton et al.
patent: 4764580 (1988-08-01), Martin et al.
patent: 5026816 (1991-06-01), Keehan
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