Dispersants

Details Dispersants Dispersants

2008-03-25

2008-03-25

Lipman, Bernard (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S161000, C524S504000, C525S328200, C525S384000, C525S386000, C528S332000

Reexamination Certificate

active

10257132

ABSTRACT:
Basic and acid dispersants derived from branched alkyl aliphatic acids and alcohols and one or more hydroxy carboxylic acid or lactone to give a polyoxyalkylenecarbonyl chain (POAC) having a terminal carboxylic acid group (TPOAC acid) or terminal hydroxy group (TPOAC alcohol). Preferred basic dispersants are obtained by reaching one or more TPOAC acids with a polyamine or polyimine such as polyethyleneimine and preferred anionic dispersants are prepared by forming a phosphate ester of a TPOAC alcohol.

REFERENCES:
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patent: 5011629 (1991-04-01), Bilbo
patent: 5980772 (1999-11-01), Fujii et al.
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patent: 99/55763 (1999-11-01), None
patent: 01/21298 (2001-03-01), None

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