Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2007-08-07
2007-08-07
Puttlitz, Karl (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C560S198000, C560S190000, C400S401000
Reexamination Certificate
active
11231190
ABSTRACT:
Novel mixed esters of dicarboxylic acids with monohydric fatty alcohols and propoxylated fatty alcohols show unexpected superior properties as pigment dispersants, especially for inorganic pigments used in foundations, make-ups, lipsticks and physical sunscreens. The compounds of the present invention show superior pigment wetting and dispersing properties, as demonstrated by their ability to form fluid, very high-solids dispersions, while exhibiting unusual emolliency and gloss formation.The novel compounds of this invention have the following structural formula:wherein R1is has the structural formula:wherein:R4is a saturated or unsaturated, substituted or unsubstituted aliphatic moiety containing from 4 to 24 carbon atoms;X is an integer from 3 to 30;R2is a saturated or unsaturated, substituted or unsubstituted aliphatic moiety which contains from 4 to 40 carbon atoms; andR3is a saturated or unsaturated, straight chain or branched chain aliphatic moiety containing from 12 to 24 carbon atoms. The preferred compounds are Octyldodecyl PPG-3 Myristyl Ether Dilinoleate and Isostearyl PPG-4 Butyloctyl Ether Dilinoleate.
REFERENCES:
patent: 2003/0114520 (2003-06-01), Pereira et al.
Smith Maria K.
Smith Ronald J.
Puttlitz Karl
Zall Michael E.
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