7 results about "Poly vinyl chloride" patented technology

The present disclosure relates to a flexible multi-layered material. An embodiment consistent with the disclosure has a plurality of poly(vinyl chloride)—PVC—layers, wherein at least one of the plurality of PVC layers is a foam layer, wherein each of the layers of the plurality of PVC layers comprises up to 60% (w / w) of a phthalate-free plasticizer, and wherein the phthalate-free plasticizer is selected from the group consisting of: phosphate, trimellitate, adipate, citrate, sebacate, polyester, vegetable oil, and mixtures thereof, and wherein the solubility of the phthalate-free plasticizer in the PVC is at least 13 (J·cm−3)1 / 2.

The disclosure provides a method of preparing porous membranes from waste PVC plastics comprising unknown fixed quantities of plasticizer. The method includes the steps of providing a first solution comprising waste PVC particles and said plasticizer in a first aprotic solvent and a second solution comprising a porogen in a second aprotic solvent. The first and second solutions are mixed to provide a dope solution comprising solubilised waste PVC particles, said plasticizer and the porogen in the first and second aprotic solvents. The resulting dope solution is cast in a layer on a surface of a substrate to form a membrane precursor. The membrane precursor is then immersed in a non-solvent for a period of time sufficient for the membrane precursor to undergo phase inversion and produce the porous membrane.

Disclosed is an ink comprising: (a) a solvent composition; and (b) a pigment dispersion; wherein the solvent composition comprises soybean methyl ester, diisobutyl succinate, diisobutyl glutarate, and diisobutyl adipate, the soybean methyl ester being present in an amount of 30% to 75% by weight based on the total weight of the ink, and wherein the pigment dispersion comprises a pigment and a binder, the binder comprises a poly (vinyl chloride-vinyl acetate) copolymer. A process for producing the ink, a printing method, and a printed article are also disclosed.

Disclosed is an ink comprising: (a) a solvent composition; and (b) a pigment dispersion; wherein the solvent composition comprises diisobutyl succinate, diisobutyl glutarate, and diisobutyl adipate wherein the total amount of diisobutyl succinate, diisobutyl glutarate, and diisobutyl adipate is 50 wt% or more based on the total weight of the ink, and wherein the pigment dispersion comprises a pigment and a binder, the binder comprises a poly (vinyl chloride-vinyl acetate) copolymer. A process for producing the ink, a printing method, and a printed article are also disclosed.

The present invention relates to a process of solvent cement made by waste PVC fill material recyc1ates for bonding of PVC pipes and other molded objects. The present invention relates to an improved and new method for production of waste PVC based solvent cement which comprises mechanically recycled waste PVC rec elates, minor amount of virgin PVC and solvents mixture. The recycled product will bring economic and environmental benefits and it is stable at room temperature at air tight condition and storage life is one year.

The present invention relates to a method for producing PVC, and in particular provides a method for producing PVC by polymerization of vinyl chloride, comprising the steps of: (a) reacting an acyl halide with a peroxide in a reactor to form a diacyl peroxide; (b) reacting an alkyl haloformate with the peroxide in the same reactor to form a dialkyl peroxydicarbonate without removing the diacyl peroxide formed in step (a), thereby producing a mixture comprising the diacyl peroxide and the dialkyl peroxydicarbonate; and (c) using the mixture comprising the diacyl peroxide and the dialkyl peroxydicarbonate as an initiator mixture for the polymerization of vinyl chloride.

The present invention addresses the problem of providing an adhesive tape which is unlikely to peel or become sticky during long-term use and which is suitable for use in low temperature environments.　One aspect of the present invention is an adhesive tape comprising: a base material layer containing a poly(vinyl chloride) resin; and a rubber-based adhesive layer provided to at least one surface of the base material layer. The adhesive tape has a tensile breaking elongation of 50% or more when measured at -33°C using a method stipulated in JIS Z 0237: 2009. In addition, the content of a (meth)acrylic polymer in the rubber-based adhesive layer is 5-25 mass%. Furthermore, the rubber-based adhesive layer has a storage elastic modulus of 0.25-0.45 MPa at 23°C.