Dispersant for nonaqueous systems

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From heterocyclic reactant containing as ring atoms oxygen,...

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524612, 10628726, 25217421, 564505, 528405, C08G 6526, C09C 310, C09D 1700

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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.

REFERENCES:
patent: 2792369 (1957-05-01), Dickson
patent: 2792370 (1957-05-01), Dickson
patent: 2792371 (1957-05-01), Dickson
patent: 2792372 (1957-05-01), Dickson
patent: 2979528 (1961-04-01), Lundsted
patent: 3036118 (1962-05-01), Jackson et al.
patent: 4389219 (1983-06-01), Naka et al.

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