Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2005-12-06
2005-12-06
Acquah, Samuel A. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S300000, C528S302000, C525S437000, C525S444500
Reexamination Certificate
active
06972316
ABSTRACT:
The present invention relates to a series of esters that are water insoluble and hydrophobic. Surprisingly however we have found that by selecting the proper polyester having (a) a dipentaerythritol portion, in which several hydroxyl groups remain unreacted and consequently polar, (b) a polyhydroxystearic acid polyester portion and (c) a mono-fatty acid portion esters that will have an affinity for water are prepared. These esters allow for the incorporation of three times their weight in water into pigmented products, where they improve creaminess, emmoliency, skin feel, humectancy and long wear.
REFERENCES:
patent: 5488121 (1996-01-01), O'Lenick
patent: 6264961 (2001-07-01), Ansmann et al.
Imperante John
O'Lenick, Jr. Anthony J.
Acquah Samuel A.
Phoenix Research Corp
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