Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From heterocyclic reactant containing as ring atoms oxygen,...
Patent
1989-08-24
1991-07-23
Nielsen, Earl
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From heterocyclic reactant containing as ring atoms oxygen,...
524612, 10628726, 25217421, 564505, 528405, C08G 6526, C09C 310, C09D 1700
Patent
active
050345087
ABSTRACT:
The present invention relates to a dispersant for nonaqueous systems which can disperse insoluble fine powders in nonaqueous liquids in a short period of time and give long-term dispersion stability to the resulting dispersions without allowing the formation of a so-called hard cake. The dispersant consists essentially of at least one polyether compound derived from at least one member of the class consisting of polyamine compounds having 5 to 300 active hydrogen atoms per molecule, polyalkylenimine compounds having 5 to 300 active hydrogen atoms per molecule, and derivatives thereof having 5 to 300 active hydrogen atoms per molecule by addition of at least one of ethylene oxide and propylene oxide and at least one alpha-olefin oxide containing 4 to 30 carbon atoms. The polyether compound has a molecular weight of 1,000 to 1,000,000. The dispersant has a favorable constitution resulting from well-balanced and efficient addition of hydrophobic and hydrophilic alkylene oxides and can disperse different fine powders in various nonaqueous liquids in a short period of time. The dispersions obtained show good storage stability for a prolonged period of time. The invention thus greatly contributes to the technical advancement in the field of nonaqueous fine powder dispersions.
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patent: 4389219 (1983-06-01), Naka et al.
Mayuzumi Tominobu
Nishizaki Shoichi
Dai-Ichi Kogyo Seiyaku Co. Ltd.
Nielsen Earl
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