Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Reexamination Certificate
2009-01-21
2011-11-29
Vajda, Peter (Department: 1721)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
C430S109100, C430S109400, C525S418000
Reexamination Certificate
active
08067477
ABSTRACT:
An object of the present invention is to provide the resin composition for electro-photographic toner, which the electro-photographic toner to be obtained by it is superior to low temperature fixing properties and a hot offset resistance, and the electro-photographic toner thereof. To be achieved this purpose, multi-branched state polyester structure having a structure representing the following structural formula (1) as a repeating unit, is made into a main skeleton (In the formula, R expresses an aliphatic hydrocarbon group, and n shows the number of repeating units of a branched structure and is an average of 1-5.) *a is a node of the carbon atom of a carbonyl group, *b is a node of an oxygen atom, and *b is bonded to *a in the other repeating unit of the structural formula (1)). In addition, polyester resin (A) having a ratio of 25 to 95% of the weight for alkyl group of the number of carbon atoms 20-80 or alkenyl group of the number of carbon atoms 20-80 to the molecular terminal and aliphatic series crystalline polyester resin (B) is contained. The electro-photographic toner containing the resin composition for electro-photographic toner and this composition is provided.
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International Search Report dated Mar. 17, 2009, issued on PCT/JP2009/050818.
Hirota Yasunobu
Shirai Nobuyoshi
DIC Corporation
Edwards Angell Palmer & & Dodge LLP
Vajda Peter
LandOfFree
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