US 8,008,375 B2Granted

Poly(vinyl chloride) product containing cyclodextrin derivatives with suppression of the migration of plasticizer and manufacturing method thereof

AssigneeSnu R&Db Foundation

InventorsSeung-Yeop Kwak, Sang-Jae Jung, Jae-Woo Chung

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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.

Claims9

Dependent claims

A method for manufacturing poly(vinyl chloride) (PVC) product containing cyclodextrin derivatives with suppression of the migration of plasticizer, the method comprising:

(S1) preparing cyclodextrin derivative particles represented by the following Formula 3;
(S2) inputting the cyclodextrin derivative particles, a water-based dispersion medium and a vinyl chloride monomer into a 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 any one liquid plasticizer selected from the group consisting of a phthalate plasticizer, an liphatic diester plasticizer, a trimellitate plasticizer and a phosphate plasticizer, and molding the mixture in a predetermined shape using heat:
where R each is independently hydrogen, or substituted group of a silane functional group having 1 to 60 carbon atoms, represented by the following Formula 5, and has a degree of substitution of 5 to 100%, and n is an integer of 6 to 26,
where a, b, c, d and e each is an integer of at least 0, a+b+c+c+d+e is at least 1, and a linking order between constituent units according to a, b, c, d and e is randomly changed,
where R1, R2 and R3 each is independently the hydrocarbon functional group having 1 to 20 carbon atoms, represented by the Formula 4, and at least one of R1, R2 and R3 has a vinyl group.

4 more elements

A PVC product containing cyclodextrin derivatives with suppression of the migration of plasticizer, the PVC product being manufactured by molding a mixture in a predetermined shape using heat, the mixture comprising:

(a) a plurality of cyclodextrin derivative particles-capsulated PVC particles including PVC particles and cyclodextrin derivative particles represented by the following Formula 3 being dispersedly capsulated in the PVC particles;
and
(b) any one liquid plasticizer selected from the group consisting of a phthalate plasticizer, an liphatic diester plasticizer, a trimellitate plasticizer and a phosphate plasticizer:
where R each is independently hydrogen or substituted group of a silane functional group having 1 to 60 carbon atoms, represented by the following Formula 5, and has a degree of substitution of 5 to 100%, and n is an integer of 6 to 26,
where a, b, c, d and e each is an integer of at least 0, a+b+c+c+d+e is at least 1, and a linking order between constituent units according to a, b, c, d and e is randomly changed,
where R1, R2 and R3 each is independently the hydrocarbon functional group having 1 to 20 carbon atoms, represented by the Formula 4 and at least one of R1, R2 and R3has a vinyl group.

3 more elements

Dependencies are inferred from the claim text.