JP3646358B2 - Vinyl chloride polymer-polyurethane resin composition - Google Patents

Description

【００８８】
【表２】

【００８９】
【発明の効果】
本発明のＰＶＣ−ＰＵ樹脂組成物は、耐加水分解性、圧縮永久歪み特性及び異形押出し成形性に優れている。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vinyl chloride polymer (hereinafter referred to as PVC), a polyurethane (hereinafter referred to as PU), a plasticizer, a hydrocarbon-based lubricant and a high-grade resin having excellent hydrolysis resistance, compression set characteristics and profile extrusion moldability. The present invention relates to a PVC-PU resin composition comprising fatty acid magnesium.
[0002]
[Prior art]
In JP-A-4-220416, a vinyl chloride resin composition obtained by adding 5 to 100 parts by weight of a plasticizer to 100 parts by weight of a vinyl chloride resin and drying it up, a polymer polyol, and an isocyanate compound having three or more isocyanate groups. There has been proposed a vinyl chloride resin composition excellent in gelling meltability and surface smoothness obtained by heat-melt mixing under a shearing force.
[0003]
[Problems to be solved by the invention]
However, the PVC-PU resin composition obtained by the above method is inferior in profile extrusion moldability because metal adhesion occurs during extrusion molding.
[0004]
Therefore, the present invention is a PVC-PU resin composition that has solved the disadvantages of this conventional PVC-PU resin composition, that is, it does not stick to metal and is excellent in profile extrusion moldability, and is also excellent in hydrolysis resistance. The object is to provide a PVC-PU resin composition comprising PVC, PU, a plasticizer, a hydrocarbon-based lubricant, and a higher fatty acid magnesium.
[0005]
[Means for Solving the Problems]
In view of the present situation as described above, the present inventors prevent metal adhesion without impairing hydrolysis resistance by blending a higher fatty acid magnesium and a hydrocarbon-based lubricant into the PVC-PU resin composition. It has been found that a PVC-PU resin composition having good hydrolysis resistance, compression set properties and profile extrusion moldability can be obtained, and the present invention has been completed.
[0006]
That is, the present invention is PVC, It had a network structure formed by reacting a polymer polyol with a compound having 3 or more isocyanate groups. The gist is a PVC-PU resin composition comprising PU, a plasticizer, a hydrocarbon-based lubricant, and a higher fatty acid magnesium.
[0007]
Hereinafter, the present invention will be described in detail.
[0008]
The PVC used in the present invention is a vinyl chloride-containing polymer, such as a vinyl chloride homopolymer, a chlorinated vinyl chloride polymer, a vinyl chloride monomer and one or more monomers copolymerizable therewith. A vinyl chloride copolymer obtained by random copolymerization, graft copolymerization, or block copolymerization, and a mixture of two or more of these polymers.
[0009]
As the monomer copolymerizable with the vinyl chloride monomer, any monomer can be used as long as it is copolymerizable with the vinyl chloride monomer. For example, ethylene, propylene, butene, pentene- 1, butadiene, styrene, α-methylstyrene, acrylonitrile, vinylidene chloride, vinylidene cyanide, alkyl vinyl ethers such as methyl vinyl ether, carboxylic acid vinyl esters such as vinyl acetate, aryl ethers such as methoxystyrene, dimethylmaleic acid, etc. Dialkylmaleic acids, fumaric acid esters such as dimethyl fumarate, N-vinylpyrrolidone, vinylpyridine, vinylsilanes, acrylic acid alkyl esters such as butyl acrylate, and methacrylic acid alkyl esters such as methyl methacrylate And the like can be given.
[0010]
The degree of polymerization of PVC is not particularly limited and any one can be used, but those having a degree of molding processability of 1200 to 4000 are preferably used.
[0011]
In addition, in the production of the PVC-PU resin composition of the present invention described later, when PVC is impregnated with a polymer polyol and a plasticizer, PVC is obtained by a suspension polymerization method because the polymer polyol and the plasticizer have excellent absorbability. It is preferable that
[0012]
Furthermore, when an ethylene-vinyl chloride copolymer is used as PVC, a PVC-PU resin composition having excellent flexibility can be obtained, which is preferably used.
[0013]
The PU used in the present invention is a PU having a network structure formed by reacting a polymer polyol and a compound having three or more isocyanate groups.
[0014]
The polymer polyol has two or more hydroxyl groups. For example, polyester polyol, polyether polyol, polycarbonate polyol, vinyl polyol, diene polyol, castor oil polyol, silicone polyol, polyolefin polyol or these. The copolymer of these is mentioned, These 1 type (s) or 2 or more types are used.
[0015]
The molecular weight of the polymer polyol is not particularly limited, and any polymer polyol can be used, but the number average molecular weight is preferably 500 or more and 8000 or less from the viewpoint of easy handling of the polymer polyol and low compression and good compression set.
[0016]
The polyester polyol is obtained, for example, by condensation polymerization of a dicarboxylic acid and a short chain polyol. At this time, as the dicarboxylic acid component, succinic acid, glutaric acid, adipic acid, azelaic acid, sebacic acid, dodecanoic acid, phthalic acid, isophthalic acid, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, maleic anhydride, fumaric acid, itaconic acid Etc., and one or more of these are used. On the other hand, examples of the short-chain polyol component include aliphatic, alicyclic, aromatic, substituted aliphatic, or heterocyclic dihydroxy compounds, trihydroxy compounds, and tetrahydroxy compounds, such as 1,2-ethanediol and 1,3. -Propanediol, 1,4-butanediol, butenediol, 3-methyl-1,5-pentanediol, 1,6-hexanediol, 1,10-decamethylenediol, 2,5-dimethyl-2,5- Hexanediol, neopentyl glycol, diethylene glycol, 1,4-cyclohexanedimethanol, 2-methyl-1,8-octanediol, 1,9-nonanediol, bis (β-hydroxyethoxy) benzene, p-xylenediol, dihydroxy Ethyltetrahydrophthalate, trimethylolpropane, Glycerin, 2-methylpropane-1,2,3-triol, 1,2,6-hexane triol and the like, one or more of these can be used.
[0017]
Other methods for obtaining polyester polyols include β-propiolactone, bivalolactone, δ-valerolactone, β-methyl-δ-valerolactone, ε-caprolactone, methyl-ε-caprolactone, dimethyl-ε-caprolactone, trimethyl- It is also possible to use a method in which one or more lactone compounds such as ε-caprolactone are reacted with one or more hydroxy compounds selected from the short-chain polyol components.
[0018]
Examples of polyether polyols include polytetramethylene glycol, polyethylene glycol, polypropylene glycol, polyoxypropylene glycol, and the like, and one or more of these are used.
[0019]
As the polycarbonate-based polyol, one or two or more hydroxy compounds selected from the above short-chain polyols and those obtained by diesterification from diaryl carbonate, dialkyl carbonate, or ethylene carbonate are used. For example, poly (1,6-hexamethylene carbonate), poly (2,2′-bis (4-hydroxyhexyl) propane carbonate) and the like are industrially produced. As another method for obtaining the polycarbonate polyol, a so-called phosgene method can also be used.
[0020]
In addition, vinyl polyols such as acrylic polyols obtained by copolymerization of acrylic monomers having an acrylic group such as β-hydroxyethyl acrylate and β-hydroxyethyl methacrylate with acrylic esters, poly (1,4- Polybutadiene polyols such as butadiene) and poly (1,2-butadiene), castor oil-based polyols such as polypropylene glycol ricinolate, silicone-based polyols, polyolefin-based polyols, and the like can also be used.
[0021]
The isocyanate compound having three or more isocyanate groups is, for example, a triisocyanate modified product of diisocyanate, 1,6,11-undecane triisocyanate, lysine ester triisocyanate or 4-isocyanate methyl-1,8-octamethyl diisocyanate. Polyfunctional isocyanates such as isocyanates or diisocyanate modified burettes, allophanates, adducts, or polyphenylmethane polyisocyanate are used, and one or more of these are used.
[0022]
Diisocyanates include 2,4- or 2,6-tolylene diisocyanate, m- or p-phenylene diisocyanate, 1-chlorophenylene-2,4-diisocyanate, 1,5-naphthalene diisocyanate, methylene bisphenylene-4,4. Examples include '-diisocyanate, m- or p-xylene diisocyanate, hexamethylene diisocyanate, lysine diisocyanate, 4,4'-methylenebiscyclohexyl diisocyanate, isophorone diisocyanate, or trimethylhexamethylene diisocyanate.
[0023]
Moreover, it is also possible to use together said diisocyanate. However, in this case, it is preferable that the isocyanate group mole number of the isocyanate compound having 3 or more isocyanate groups relative to the mole number of isocyanate groups of all isocyanate compounds is 0.25 or more in the PVC-PU resin composition of the present invention. This is preferable for developing permanent set characteristics.
[0024]
In addition, the molar ratio of the isocyanate group in the isocyanate compound to the hydroxyl group of the polymer polyol (NCO / OH molar ratio) is from 0.3 to 1.3 in terms of expressing good moldability and compression set characteristics. Yes, preferably 0.4 or more and 0.8 or less.
[0025]
It is preferable to carry out the above PU formation reaction in the presence of a urethanization reaction catalyst. The urethanization reaction catalyst is not particularly limited, and a known catalyst can be used. Examples thereof include amine catalysts such as triethylamine, triethylenediamine or N-methylmorpholine, or tin catalysts such as tetramethyltin, tetraoctyltin, dimethyldioctyltin, triethyltin chloride, dibutyltin diacetate or dibutyltin dilaurate. One or more of these can be used, and dibutyltin dilaurate is preferably used. The amount of catalyst used varies depending on the activity of the catalyst used, but the amount necessary to complete the urethane reaction is good. Taking dibutyltin dilaurate as an example, an amount of 1 ppm or more and 10,000 ppm or less is desirable with respect to the total amount of PVC, polymer polyol, isocyanate compound and plasticizer from the viewpoint of productivity and processability.
[0026]
The PU amount in the present invention, that is, the total blending amount of the polymer polyol and the isocyanate compound is preferably 30 parts by weight or more and 600 parts by weight or less with respect to 100 parts by weight of PVC from the viewpoint of exhibiting good moldability and compression set.
[0027]
Examples of the plasticizer used in the present invention include di-n-butyl phthalate, di-2-ethylhexyl phthalate (hereinafter referred to as DOP), di-n-octyl phthalate, diisononyl phthalate, diisodecyl phthalate, Phthalic acid plasticizers such as diisooctyl phthalate, octyl decyl phthalate, butyl benzyl phthalate, di-2-ethylhexyl isophthalate; di-2-ethylhexyl adipate, di-n-decyl adipate, diisodecyl adipate, sebacine Aliphatic ester plasticizers such as dibutyl acid and di-2-ethylhexyl sebacate; Trimellitic acid plasticizers such as trioctyl trimellitic acid and tridecyl trimellitic acid; Tributyl phosphate, tri-2-ethylhexyl phosphate, phosphorus 2-ethylhexyl diphenyl acid, tric acid phosphate Phosphate plasticizers such as Gilles; epoxy plasticizers such as epoxy soybean oil; polyester polymeric plasticizer and the like, one or two or more of these can be used.
[0028]
Further, the blending amount of the plasticizer is preferably 10 to 300 parts by weight with respect to 100 parts by weight of PVC from the viewpoint of imparting flexibility and preventing bleed out.
[0029]
In the present invention, the PVC-PU resin composition obtained by using higher fatty acid magnesium is excellent in hydrolysis resistance. Any higher fatty acid magnesium may be used as long as it falls under the concept of higher fatty acid magnesium, and examples include fatty acid magnesium having 7 to 30 carbon atoms. Furthermore, magnesium having a carbon number of 7 or more and 20 or less is particularly preferred because it can provide better releasability with metals and is easily available. Examples of such higher fatty acid magnesium include stearin. Examples thereof include magnesium oxide and magnesium laurate, and it is preferable to use one or more of these.
[0030]
As the blending amount of the higher fatty acid magnesium, 0.1 to 10.0 parts by weight is preferably used with respect to 100 parts by weight of PVC from the viewpoint of exhibiting good compression set characteristics and imparting good profile extrusion moldability. The
[0031]
Also, as described later, PU is melted and mixed with PVC, polymer polyol, an isocyanate compound having three or more isocyanate groups, a plasticizer, a urethanization reaction catalyst, a hydrocarbon-based lubricant, and higher fatty acid magnesium under a shearing force. When produced, the fatty chain of the higher fatty acid magnesium is preferably a saturated hydrocarbon that does not affect the urethanization reaction.
[0032]
The hydrocarbon-based lubricant used in the present invention is not particularly limited, and known ones can be used. The molecular structure is not particularly limited, and linear, branched or a mixture thereof can be used. The hydrocarbon-based lubricant is a gel permeation chromatograph under the condition of a weight average molecular weight (0.04 wt% trichlorobenzene solution, 140 ° C.) because a PVC-PU resin composition that is particularly excellent in profile extrusion moldability is obtained. The linear polyethylene conversion value by graphy (hereinafter referred to as GPC) is preferably 100 to 3000, and more preferably 500 to 900 in view of the ease of production of the PVC-PU resin composition.
[0033]
Examples of such hydrocarbon lubricants include liquid paraffin, natural paraffin, micro wax, sazol wax (manufactured by Sazol Corporation), synthetic paraffin, polyethylene wax and the like, and one or more of these can be used. .
[0034]
And the usage-amount of a hydrocarbon type lubricant will not be restrict | limited especially unless it deviates from the objective of this invention. And since the PVC-PU resin composition which has especially favorable profile extrusion moldability can be manufactured stably, it is especially 0.1 to 10.0 weight part that the compounding quantity is with respect to 100 weight part of PVC. Good.
[0035]
In the PVC-PU resin composition of the present invention, a stabilizer usually added to PVC to such an extent that its performance is not extremely lowered (for example, a metal soap such as barium stearate, an organic tin stabilizer such as tin laurate) Phosphite stabilizers such as tetraphenylpolypropylene glycol diphosphite, hydrotalcite stabilizers such as perchloric acid-treated hydrotalcite), colorants, calcium carbonate, talc, lubricants (for example, n- Fatty acid ester waxes such as butyl stearate), acrylic processing aids (for example, methyl methacrylate-alkyl acrylate copolymers such as methyl methacrylate-butyl acrylate copolymers) and the like, As necessary, flame retardants such as antimony trioxide, zinc borate, etc. It can be pressurized.
[0036]
When the PU in the present invention is produced by heat-melt mixing PVC, polymer polyol, an isocyanate compound having 3 or more isocyanate groups, a plasticizer, and a urethanization reaction catalyst under shearing force, the resulting PVC- The PU resin composition is preferable because of its excellent tensile strength.
[0037]
To produce PU by PVC, polymer polyol, isocyanate compound having 3 or more isocyanate groups, a plasticizer, and a urethanization reaction catalyst by heating and melting and mixing under shearing force, for example, Banbury mixer (manufactured by Farrell), Pressurizing kneaders (manufactured by Moriyama Seisakusho Co., Ltd.), internal mixers (manufactured by Kurimoto Iron Works), intensive mixers (manufactured by Nippon Roll Manufacturing Co., Ltd.), etc., plastics such as roll molding machines, extrusion molding machines, etc. A kneading machine used for processing rubber can be used. The temperature for heat-melt mixing is 90 to 220 ° C., preferably 100 to 150 ° C., because PVC can be easily melted and PVC is less likely to undergo thermal decomposition.
[0038]
At this time, it is preferable that heat smooth mixing is performed under a shearing force using a powdery mixture in which PVC is impregnated with a plasticizer in advance so that the surface smoothness during extrusion is good.
[0039]
The urethanization reaction catalyst may or may not be impregnated with PVC in advance together with the plasticizer, but it is preferably impregnated for handling.
[0040]
Furthermore, when there are a lot of liquid components, the polymer polyol and the plasticizer, or the powdery mixture in which the polymer polyol, the plasticizer and the urethanization reaction catalyst are impregnated in advance with a shearing force are used for heat-melt mixing. This is preferable because the surface smoothness at the time of extrusion molding is improved and the productivity is improved. Here, the impregnated polymer polyol or the like may be a part or all of the used one.
[0041]
In order to pre-impregnate PVC with a plasticizer, polymer polyol, urethanization reaction catalyst, etc., a mixer such as a ribbon blender with a jacket, a Henschel mixer (made by Mitsui Miike Seisakusho) or a super mixer (made by Kawada Seisakusho) may be used. . In the case of using such a mixer, after adding PVC to the mixer, a predetermined amount of plasticizer, polymer polyol, urethanization reaction catalyst, etc. are added to this while stirring, and mixed until the resin temperature reaches 90 to 150 ° C. By continuing, the PVC powder is impregnated with a plasticizer, a polymer polyol, a urethanization reaction catalyst, etc., and a fluid powdery mixture is obtained. When the resin temperature is less than 90 ° C., the powder flowability is poor, and when it exceeds 150 ° C., fish eyes may be generated.
[0042]
When impregnating two or more of the plasticizer, polymer polyol, and urethanization reaction catalyst, they may be added to a mixer such as the above-mentioned Henschel mixer after mixing in advance or may be added separately.
[0043]
Moreover, it is preferable that the stabilizer for PVC is previously mixed with PVC using a mixer. The liquid stabilizer may be added in advance to the plasticizer.
[0044]
As an example in which PU is produced by heat-melt mixing of PVC, polymer polyol, an isocyanate compound having three or more isocyanate groups, a plasticizer and a urethanization reaction catalyst under shearing force, in this way, polymer polyol, plastic Introduced into the above kneading and forming machine is a liquid in which the PVC and the isocyanate compound having 3 or more isocyanate groups impregnated with the agent and the urethanization reaction catalyst and, optionally, the remaining part of the polymer polyol not impregnated in the PVC are uniformly mixed. Then, a method of heating, melting and mixing under a shearing force can be mentioned.
[0045]
In order to produce the PVC-PU resin composition in the present invention, PU is melt-mixed by heating, under a shear force, PVC, a polymer polyol, an isocyanate compound having three or more isocyanate groups, a plasticizer, and a urethanization reaction catalyst. After production, it may be melt-mixed with hydrocarbon-based lubricant and higher fatty acid magnesium, PVC, polymer polyol, isocyanate compound having 3 or more isocyanate groups, plasticizer, and urethanization reaction catalyst under heat and melting. When mixing, hydrocarbon-based lubricant and higher fatty acid magnesium may be mixed with PVC in advance, but the latter is more convenient and preferable in production.
[0046]
For the melt mixing, a kneader and / or a granulator used for processing plastics or rubber such as an extruder and a roll kneader can be used.
[0047]
The PVC-PU resin composition of the present invention is a molded product having a shape such as a roll, a hose, a tube, a belt, a packing, a sealant, a sheet, a tire, a vibration absorbing material, a sports equipment, a daily miscellaneous goods and the like by a conventionally known method. And can be processed by injection molding, extrusion molding, foam molding, blow molding and the like.
[0048]
【Example】
EXAMPLES Hereinafter, although this invention is demonstrated using an Example, this invention is not limited to these Examples.
[0049]
Example 1
In a Henschel mixer with an internal volume of 20 liters, 100 parts by weight of an ethylene-vinyl chloride copolymer (trade name Reuron E-2800, manufactured by Tosoh Corporation) obtained by suspension polymerization, magnesium stearate (hereinafter, stearic acid) 1 part by weight of Mg), 5 parts by weight of micro wax (manufactured by Nippon Seiwa Co., Ltd., trade name LUVAX 2191, weight average molecular weight 620), 2 parts by weight of barium stearate as a stabilizer, hydrochlorcite treated with perchloric acid (Nissan) Ferro Organic Chemical Co., Ltd., trade name BP-331) 1.5 parts by weight was charged and stirred at a rotational speed of 950 rpm for 1 minute. Separately, 50 parts by weight of a polymer polyol (manufactured by Nippon Polyurethane Co., Ltd., trade name NIPPOLAN 4067, number average molecular weight 2000), 100 parts by weight of DOP, and 0.15 part by weight of dibutyltin dilaurate (urethanization reaction catalyst) A mixture of minutes was prepared. This was added to the Henschel mixer and stirred and mixed until the temperature of the mixture reached 110 ° C. The content was 4000 g in total. The mixture became a powdery mixture that could flow easily.
[0050]
257.65 parts by weight of the obtained powder was charged into a Banbury mixer having a volume of 1700 cc and a set temperature of 110 ° C., and stirred at a constant rotational speed. Separately, isocyanurate modified of hexamethylene diisocyanate (Nippon Polyurethane Co., Ltd., trade name Coronate HX) 34 parts by weight, polymer polyol heated to 80 ° C. (Nippon Polyurethanes Co., Ltd. 4067, number average molecular weight 2000) 216 parts by weight (NCO / OH molar ratio = 0.65) and mixed for 1 minute were prepared and poured from a Banbury mixer inlet. The content was 1540 g in total. The mixture was heated and melted under a shearing force and discharged when the temperature of the molten mixture reached 175 ° C. The composition is shown in Table 1.
[0051]
The obtained PVC-PU resin composition was formed into a sheet using a roll kneader at 130 ° C., and a test piece was press-molded for a compression set (JISK6301) test, and the compression set was measured. The results are shown in Table 2.
[0052]
Moreover, the PVC-PU resin composition obtained for the hydrolysis resistance test was formed into a sheet with a roll kneader at 130 ° C., and the test piece was press-molded (thickness 1 mm). In the hydrolysis resistance test, the appearance deterioration was evaluated and evaluated by performing an exposure acceleration test under the following apparatus conditions using a thermo-hygrostat (manufactured by Isuzu Seisakusho, model MFP-734).
[0053]
・ Temperature: 70 ℃
・ Humidity: 95%
・ Test time: 6 weeks
The evaluation of the appearance deterioration of the product obtained by this test was performed based on the following criteria.
[0054]
○: No change
×: Both discoloration and stickiness
The results are shown in Table 2.
[0055]
Further, for use in extrusion molding, a part of the sheet was granulated by applying it to a sheet pelletizer.
[0056]
The obtained pellets were extruded using a 20 mm single screw extruder (trade name: Labo Plast Mill, manufactured by Toyo Seiki Seisakusho Co., Ltd.).
[0057]
The die used was a garbage die described in ASTM D2230-90, and the extrusion conditions were a cylinder temperature of 170 ° C., a die temperature of 180 ° C., and a screw rotation speed of 100 rpm. The extrusion appearance was evaluated by System B (edge). The results are shown in Table 2.
[0058]
As for evaluation, 1 is the worst and 10 is the best.
[0059]
The measurement of the hydrocarbon-based lubricant was performed using a GPC apparatus (manufactured by Waters, trade name: 150C) and a column (trade name: TSK-GEL GMHHR-H (S), manufactured by Tosoh Corporation), inner diameter: 7.8 mm, length: 300 mm. 3) were connected in series, and were performed under the conditions of a column temperature of 140 ° C., a flow rate of 1.0 ml / min, and a 0.04 wt% trichlorobenzene solution, and the weight average molecular weight was determined as a linear polyethylene equivalent value.
[0060]
Example 2
Production and evaluation were performed in the same manner as in Example 1 except that 1 part by weight of Mg stearate was 5 parts by weight, and 263.65 parts by weight of powder instead of 259.65 parts by weight of powder was put into a Banbury mixer. It was.
[0061]
The composition is shown in Table 1, and the evaluation results are shown in Table 2.
[0062]
Example 3
2 parts by weight were used instead of 1 part by weight of Mg stearate, 2 parts by weight were used instead of 5 parts by weight of microwax (manufactured by Nippon Seiwa Co., Ltd., trade name LUVAX 2191), and powder 259 Production and evaluation were performed in the same manner as in Example 1 except that 257.65 parts by weight of the powder was put into a Banbury mixer instead of .65 parts by weight.
[0063]
The composition is shown in Table 1, and the evaluation results are shown in Table 2.
[0064]
Example 4
5 parts by weight were used instead of 1 part by weight of Mg stearate, 2 parts by weight were used instead of 5 parts by weight of microwax (Nippon Seiwa Co., Ltd., LUVAX 2191), and powder 259.65 Manufacture and evaluation were performed in the same manner as in Example 1 except that 260.65 parts by weight of the powder was added to the Banbury mixer instead of parts by weight.
[0065]
The composition is shown in Table 1, and the evaluation results are shown in Table 2.
[0066]
Comparative Example 1
Instead of using 1 part by weight of Mg stearate and 5 parts by weight of microwax (manufactured by Nippon Seiwa Co., Ltd., LUVAX 2191), 253.65 parts by weight of powder was put in a Banbury type mixer instead of 259.65 parts by weight. Production and evaluation were performed in the same manner as in Example 1.
[0067]
The composition is shown in Table 1, and the evaluation results are shown in Table 2.
[0068]
The obtained PVC-PU resin composition was inferior in extrusion moldability.
[0069]
Comparative Example 2
Instead of 1 part by weight of Mg stearate, 3 parts by weight of calcium stearate (hereinafter referred to as Ca stearate) was used, and instead of 5 parts by weight of micro wax (manufactured by Nippon Seiwa Co., Ltd., trade name LUVAX 2191) Production and evaluation were performed in the same manner as in Example 1 except that 3 parts by weight were used.
[0070]
The composition is shown in Table 1, and the evaluation results are shown in Table 2.
[0071]
The obtained PVC-PU resin composition was inferior in extrusion moldability.
[0072]
Comparative Example 3
3 parts by weight of barium stearate (hereinafter referred to as “stearate Ba”) was used in place of 1 part by weight of Mg stearate, and 5 parts by weight of microwax (manufactured by Nippon Seiwa Co., Ltd., trade name LUVAX 2191). Instead, production and evaluation were performed in the same manner as in Example 1 except that 3 parts by weight were used.
[0073]
The composition is shown in Table 1, and the evaluation results are shown in Table 2.
[0074]
The obtained PVC-PU resin composition was inferior in extrusion moldability.
[0075]
Comparative Example 4
Example except that 5 parts by weight of zinc stearate was used in place of 1 part by weight of Mg stearate, and that 263.65 parts by weight of powder instead of 259.65 parts by weight were charged into a Banbury mixer. Production and evaluation were performed in the same manner as in Example 1.
[0076]
The composition is shown in Table 1, and the evaluation results are shown in Table 2.
[0077]
The obtained PVC-PU resin composition was inferior in hydrolysis resistance.
[0078]
Comparative Example 5
The use of 2 parts by weight of zinc stearate instead of 1 part by weight of Mg stearate, the use of 2 parts by weight instead of 5 parts by weight of microwax (trade name LUVAX 2191, manufactured by Nippon Seiwa Co., Ltd.), and Production and evaluation were carried out in the same manner as in Example 1 except that 257.65 parts by weight of powder instead of 259.65 parts by weight of powder was charged into a Banbury mixer.
[0079]
The composition is shown in Table 1, and the evaluation results are shown in Table 2.
[0080]
The obtained PVC-PU resin composition was inferior in hydrolysis resistance.
[0081]
Comparative Example 6
5 parts by weight were used instead of 1 part by weight of Mg stearate, 5 parts by weight of microwax (manufactured by Nippon Seiwa Co., Ltd., LUVAX 2191), and powder instead of 259.65 parts by weight of powder Production and evaluation were carried out in the same manner as in Example 1 except that 258.65 parts by weight of the body was put into a Banbury mixer.
[0082]
The composition is shown in Table 1, and the evaluation results are shown in Table 2.
[0083]
The obtained PVC-PU resin composition was inferior in extrusion moldability.
[0084]
Comparative Example 7
Production and evaluation were carried out in the same manner as in Example 1 except that 1 part by weight of Mg stearate was not used and that 258.65 parts by weight of powder instead of 259.65 parts by weight of powder were put into a Banbury mixer. It was.
[0085]
The composition is shown in Table 1, and the evaluation results are shown in Table 2.
[0086]
The obtained PVC-PU resin composition was inferior in extrusion moldability.
[0087]
[Table 1]

[0088]
[Table 2]

[0089]
【The invention's effect】
The PVC-PU resin composition of the present invention is excellent in hydrolysis resistance, compression set characteristics and profile extrusion moldability.

Claims (7)

A chloride comprising a vinyl chloride polymer , a polyurethane having a network structure formed by reacting a polymer polyol and a compound having three or more isocyanate groups , a plasticizer, a hydrocarbon lubricant, and a higher fatty acid magnesium. Vinyl polymer-polyurethane resin composition. The vinyl chloride polymer-polyurethane resin composition according to claim 1, wherein the fatty acid magnesium of higher fatty acid magnesium has 7 to 20 carbon atoms. The vinyl chloride polymer-polyurethane resin composition according to claim 1 or 2, wherein the higher fatty acid magnesium is 0.1 to 10.0 parts by weight with respect to 100 parts by weight of the vinyl chloride polymer. The vinyl chloride polymer-polyurethane resin composition according to any one of claims 1 to 3, wherein the higher fatty acid magnesium is magnesium stearate and / or magnesium laurate. The weight average molecular weight of the hydrocarbon-based lubricant is 100 to 3000 (0.04 wt% trichlorobenzene solution, linear polyethylene conversion value by gel permeation chromatography under the condition of 140 ° C, the same shall apply hereinafter). The vinyl chloride polymer-polyurethane resin composition according to any one of -4. The vinyl chloride polymer-polyurethane resin composition according to any one of claims 1 to 5, wherein the hydrocarbon lubricant is 0.1 to 10.0 parts by weight with respect to 100 parts by weight of the vinyl chloride polymer. The polyurethane is produced by heating and melt-mixing a vinyl chloride polymer, a polymer polyol, an isocyanate compound having three or more isocyanate groups, a plasticizer and a urethanization reaction catalyst under a shearing force. The vinyl chloride polymer-polyurethane resin composition according to any one of the above.