Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2008-04-25
2011-10-04
Cano, Milton I (Department: 1763)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S155000
Reexamination Certificate
active
08030381
ABSTRACT:
An object of the present invention is to provide a low-dusting additive composition which can improve thermal coloration resistance of a thermoplastic resin. This object is achieved by a granular additive composition containing 5 to 70% by weight of fatty calcium and 5 to 50% by weight of a sulfur-based compound represented by the formula (1), wherein an infrared absorption spectrum of the composition has a maximum absorption peak A in which absorbance in 1540 cm−1to 1543 cm−1is a maximum value, and a maximum absorption peak B in which absorbance in 1575 cm−1to 1583 cm−1is a maximum value, and the absorbances of the peak A and the peak B are a maximum value and a next maximum value in 1540 cm−1to 1583 cm1,in-line-formulae description="In-line Formulae" end="lead"?(R1—Y—S—C2H4CO2)m—Z (1)in-line-formulae description="In-line Formulae" end="tail"?where R1represents an alkyl group, Y represents a single bond, or a -C2H4CO2— group, m represents an integer of 1 to 4, and Z represents an alcohol residue.
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M. Gönen et al., “Preparation and Characterization of Calcium Stearate Powders and Films Prepared by Precipitation and Langmuir-Blodgett Techniques,” Ind. Eng. Chem. Res., vol. 49, 2010, pp. 1732-1736.
Kajikuri Hiroshi
Kimura Kenji
Cano Milton I
Sumitomo Chemical Company Limited
Uselding John
Wenderoth , Lind & Ponack, L.L.P.
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