Use of a Blend of Phthalate Plasticizers in Poly(Vinyl Halide) Compounds
Use of a blend of phthalate plasticizers is disclosed for flexible polyvinyl chloride compounds. The blend of plasticizers permits the compounds to achieve a 90° C. or higher ratings for usage in wire and cable articles.
1 . A polyvinyl chloride compound comprising:
(a) polyvinyl chloride and
(b) a blend of dipropylheptylphthalate and a second plasticizer less volatile than dipropylheptylphthalate, wherein ratio of the blend of (dipropylheptylphthalate):(second plasticizer less volatile than dipropylheptylphthalate) ranges from about (10):(1) to about (1):(3).
2 . The compound of claim 1 , wherein the second plasticizer is a phthalate plasticizer having more than ten carbon atoms extending from any ester linkage of the phthalate moiety.
3 . The compound of claim 2 , wherein the second plasticizer is selected from the group consisting of di-undecylphthalate, ditridecyl phthalate, and undecyl phthalate.
4 . The compound of claim 1 , wherein the polyvinyl chloride comprises polyvinyl chloride homopolymer or copolymer.
5 . The compound of claim 4 , wherein the polyvinyl chloride copolymer is a copolymerization of vinyl chloride with one or more comonomers selected from the group consisting of (meth)acrylic acids; alkyl esters of (meth)acrylic acid; hydroxyalkyl esters of (meth)acrylic; glycidyl esters of (meth)acrylic acid; unsaturated dicarboxylic acids and their anhydrides; (meth)acrylamides; (meth)acrylonitriles; maleimides; olefins; vinylidene halides; vinyl esters; vinyl ethers; diallyl phthalate; ethylene glycol dimethacrylate; methylene bis-acrylamide; tracrylyl triazine; divinyl ether; allyl silanes; and mixtures thereof.
6 . The compound of claim 1 , further comprising an additive selected from the group consisting of lubricants, thermal stabilizers, ultra-violet light stabilizers anti-oxidants, impact modifiers, processing aids, fillers, pigments, flame retardants, reinforcing materials, adhesion promoters, biocides, anti-fogging agents, anti-static agents, bonding agents, blowing agents, foaming agents, dispersants, extenders, smoke suppressants, initiators, micas, release agents, slip agents, anti-blocking agents, stearates, viscosity regulators, waxes, and combinations of them.
7 . (canceled)
8 . The compound of claim 1 , wherein ratio of the blend of (dipropylheptylphthalate):(second plasticizer less volatile than dipropylheptylphthalate) ranges from about (5):(1) to about (2):(1).
9 . The compound of claim 1 wherein the parts by weight of the plasticizer blend can range from about 10 to about 150 part per 100 parts of polyvinyl chloride.
10 . The compound of claim 1 , in the form of powder, cubes, or pellets.
11 . An extruded article made from a compound of claim 1 .
12 . A molded article made from a compound of claim 1 .
13 . The extruded article of claim 11 , wherein the second plasticizer is a phthalate plasticizer having more than ten carbon atoms extending from any ester linkage of the phthalate moiety.
14 . The extruded article of claim 13 , wherein the second plasticizer is selected from the group consisting of di-undecylphthalate, ditridecyl phthalate, and undecyl phthalate.
15 . The extruded article of claim 11 , further comprising an additive selected from the group consisting of lubricants, thermal stabilizers, ultra-violet light stabilizers, anti-oxidants, impact modifiers, processing aids, fillers, pigments, flame retardants, reinforcing materials, adhesion promoters, biocides, anti-fogging agents, anti-static agents, bonding agents, blowing agents, foaming agents, dispersants, extenders, smoke suppressants, initiators, micas, release agents, slip agents, anti-blocking agents, stearates, viscosity regulators, waxes, and combinations of them.
16 . The extruded article of claim 11 , wherein ratio of the blend of (dipropylheptylphthalate):(second plasticizer less volatile than dipropylheptylphthalate) ranges from about (5):(1) to about (2):(1).
17 . The molded article of claim 12 , wherein the second plasticizer is a phthalate plasticizer having more than ten carbon atoms extending from any ester linkage of the phthalate moiety.
18 . The molded article of claim 17 , wherein the second plasticizer is selected from the group consisting of di-undecylphthalate, ditridecyl phthalate, and undecyl phthalate.
19 . The molded article of claim 12 , further comprising an additive selected from the group consisting of lubricants, thermal stabilizers, ultra-violet light stabilizers, anti-oxidants, impact modifiers, processing aids, fillers, pigments, flame retardants, reinforcing materials, adhesion promoters, biocides, anti-fogging agents, anti-static agents, bonding agents, blowing agents, foaming agents, dispersants, extenders, smoke suppressants, initiators, micas, release agents, slip agents, anti-blocking agents, stearates, viscosity regulators, waxes, and combinations of them.
20 . The molded article of claim 12 , wherein ratio of the blend of (dipropylheptylphthalate):(second plasticizer less volatile than dipropylheptylphthalate) ranges from about (5):(1) to about (2):(1).