Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2011-08-30
2011-08-30
Eashoo, Mark (Department: 1767)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S027000, C527S313000
Reexamination Certificate
active
08008375
ABSTRACT:
The present invention relates to a PVC product containing cyclodextrin derivative particles and capable of suppressing migration of a plasticizer and a method for manufacturing the same, which includes (S1) preparing cyclodextrin derivative particles, in which a hydroxyl functional group is replaced by a predetermined compound; (S2) inputting the cyclodextrin derivative particles, a water-based dispersion medium and a vinyl chloride monomer into a high-pressure reactor and performing polymerization to obtain cyclodextrin derivative particles-capsulated PVC particles, in which a plurality of the cyclodextrin derivative particles are dispersedly capsulated in PVC particles; and (S3) mixing the cyclodextrin derivative particles-capsulated PVC particles with a low molecular weight liquid plasticizer and molding the mixture in a predetermined shape using heat.
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Translation JP 6216944 2009.
Allsoop et al. Vinyl Chloride Polymers, John Wiley and Sons, 2002.
Machine Translation of KR 10-0676942 2010.
K. Sreenivasan, “Effect of Blending β-Cyclodextrin with Poly(vinyl chloride) on the Leaching of Phthalate Ester to Hydrophilic Medium”, J of Applied Polymer Science, vol. 59, 2089-2093 (1996).
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Song et al., “Water Solubility Enhancement of Phthalates by Cetyltrimethylammonium Bromide and β-cyclodextrin”, Ind. Eng. Chem. Res., 2003, vol. 42(5), 949-955.
Chung Jae-woo
Jung Sang-Jae
Kwak Seung-Yeop
Eashoo Mark
Edwards Angell Palmer & & Dodge LLP
Heincer Liam J
Kim Kongsik
SNU & R&DB Foundation
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