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...
Reexamination Certificate
2007-04-17
2007-04-17
Wu, David W. (Department: 1713)
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...
C524S322000, C524S315000, C524S299000, C524S366000, C524S378000
Reexamination Certificate
active
11013785
ABSTRACT:
The present invention provides a dispersant for aqueous and non-aqueous systems which can disperse insoluble fine powders in non-aqueous liquids in a short period of time and give long-term dispersion stability to the resulting dispersions without allowing the formation of hard cake or precipitates. The dispersant is a compound of the formulawherein SO is styrene oxide; R is a C8–C22saturated or unsaturated group; x=1–100; y=1–3; z=1–100 and s=1–100. The dispersant of the invention is also particularly effective for dispersing additives into polymers such as polyesters, polyamides, polycarbonates, polyethylene and polypropylene.
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Godwin Edward R.
Walton Richard
Weipert Paul David
Angres Isaac A.
Ethox Chemicals LLC
Lee Rip A.
Wu David W.
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