WO2006009182A1 - 重合体組成物及びその製造方法 - Google Patents
重合体組成物及びその製造方法 Download PDFInfo
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- WO2006009182A1 WO2006009182A1 PCT/JP2005/013335 JP2005013335W WO2006009182A1 WO 2006009182 A1 WO2006009182 A1 WO 2006009182A1 JP 2005013335 W JP2005013335 W JP 2005013335W WO 2006009182 A1 WO2006009182 A1 WO 2006009182A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/375—Thiols containing six-membered aromatic rings
Definitions
- the present invention relates to a polymer composition containing 1,2-polybutadiene and a method for producing the same.
- Patent Document 1 JP-A-8-59733
- An object of the present invention is to provide a polymer composition to which heat aging resistance is sufficiently imparted and a method for producing the same.
- a polymer composition comprising a polymer, (a) a thiophenol compound, and (b) a phenol compound.
- the polymer is 1,2-polybutadiene having 60% or more of 1,2 bonds.
- the (a) thiophenol-based compound is at least one selected from the compound strength represented by the following general formula (1).
- the (b) phenolic compound is at least one selected from the compound forces represented by the following general formulas (2) to (5).
- R 1 represents an alkyl group having 1 to 8 carbon atoms
- R 4 represents CH-
- R— represents an alkylthiomethyl group represented by S—R 5 , each R 5 independently represents an alkyl group having 2 to 18 carbon atoms, and R 3 represents a hydrogen atom or a methyl group.
- each R 6 independently represents an alkyl group, aryl group, cycloalkyl group, vinyl group or alkoxy group having 1 to 20 carbon atoms.
- each R 7 represents a substituent represented by the following formula (6)
- R 8 represents an alkyl group having 1 to 22 carbon atoms.
- a method for producing the polymer composition in another aspect of the present invention, is provided.
- this production method (a) a phenolic compound and (b) an addition step of adding a phenolic compound to a polymer solution after stopping the solution polymerization, and a solvent contained in the polymer solution after the addition step Removing the solvent.
- the polymer composition in this embodiment comprises a polymer that is 1,2-polybutadiene, (a) a phenolic compound (( a ) component), and (b) a phenolic compound (component (b)). contains.
- the component (a) is added together with the component (b) to impart heat aging resistance to the polymer composition. To do.
- the component (a) is at least one selected from the compound strength represented by the following general formula (1).
- R 1 represents an alkyl group having 1 to 8 carbon atoms
- R 2 and R 4 represent CH ⁇
- R— represents an alkylthiomethyl group represented by S—R 5 , each R 5 independently represents an alkyl group having 2 to 18 carbon atoms, and R 3 represents a hydrogen atom or a methyl group.
- each R 5 is an alkyl having 2 to 12 carbon atoms.
- 4, 6-bis (octylthiomethyl) o talesol (CAS No. 110553—27—0, also known as: 2,4 bis (octylthiomethyl) -6-methylphenol), 2, 4 Bis (2 3 'Dihydroxypropylthiomethyl) 3, 6 Dimethylphenol and 2, 4 Bis (2' Acetyloxychetylthiomethyl) -3, 6 Di-Methylphenol
- At least one selected 4,6-bis (octyl thiomethyl) o talesol is most preferred.
- Examples of commercially available compounds represented by the general formula (1) include Ilganox (trade name) 1 520L manufactured by Ciba 'Specialty' Chemicals.
- the content of the component (a) in the polymer composition is preferably 0.01 to 2.0 parts by weight, more preferably 0.02 to: based on 100 parts by weight of the polymer.
- L is 8 parts by weight, more preferably 0.03: L 6 parts by weight.
- the content of the component (a) is less than 0.01 parts by weight with respect to 100 parts by weight of the polymer, it becomes difficult to impart excellent heat aging resistance to the polymer composition.
- the component (a) exceeds 2.0 parts by weight, the component (a) may be bleeding and the appearance of the product may be impaired.
- the component (b) is added together with the component (a) to impart heat aging resistance to the polymer composition. To do.
- the component (b) is at least one selected from compounds represented by the following general formulas (2) to (5).
- each R 6 independently represents an alkyl group, aryl group, cycloalkyl group, vinyl group or alkoxy group having 1 to 20 carbon atoms.
- each R 7 represents a substituent represented by the following formula (6)
- R 8 represents an alkyl group having 1 to 22 carbon atoms.
- Examples of the compound represented by the general formula (2) include 2, 2 dihydroxy-3,3 bis (methylcyclohexyl) -5,5 dimethyldiphenylmethane, 2,6 di-tert butyl 4 methylphenol, 2 , 6 Di-tert-butyl-4-ethylphenol, 2, 6-ditert-butyl-4 n-butylphenol, 2,6 ditert-butynole 4 i-butylphenol, 2 tert-butyl-4,6 dimethylphenol, 2, 4 1,6-trihexyl hexylphenol, 2,6-ditert-butyl-4-methoxyphenol, and 2,6-diphenyl-4-octadecyloxyphenol.
- Examples of commercially available compounds represented by the general formula (2) include Sumitizers (trade names) BHT, GM, GS, MDP-S, and BBM-S manufactured by Sumitomo Chemical Co., Ltd.
- the compound represented by the general formula (3) is n-octadecyl-3 in which R 8 represents an octadecyl group.
- Examples of the compound represented by the general formula (4) include tetrakis [methylene 3- (3 ', 5'-ditertbutyl 4'-hydroxy-phenol) propionate] methane.
- Examples of commercially available compounds represented by the general formula (4) include Ilganox (trade name) 1010 manufactured by Ciba 'Specialty' Chemicals.
- Examples of the compound represented by the general formula (5) include 1, 3, 5 trimethyl 2, 4, 6 tris.
- the content of the component (b) in the polymer composition is preferably 100 parts by weight of the polymer. It is preferably 0.01 to 2.0 parts by weight, more preferably 0.02 to: L 8 parts by weight, and still more preferably 0.03 to: L 6 parts by weight.
- the content of the component (b) is less than 0.01 part by weight with respect to 100 parts by weight of the polymer, it becomes difficult to impart excellent heat aging resistance to the polymer composition.
- the amount of component (b) exceeds 2.0 parts by weight, the appearance of the product may be impaired due to bleeding of component (b).
- the polymer composition preferably further contains (c) a phosphorus compound (component (c)).
- component (c) is contained together with the component (b) to suppress discoloration of the polymer composition.
- the component (c) is at least one selected from the compound forces represented by the following general formulas (7) to (9).
- R 9 represents an alkyl group having 1 to 20 carbon atoms, an aryl group, a cycloalkyl group, a phenol group or an alkoxyalkyl group, and n is 1 or 2.
- R 9 When there are a plurality of R 9 s , each R 9 may represent the same group or different groups.
- each R 1Q independently represents an alkyl group, aryl group, cycloalkyl group, vinyl group or alkoxyalkyl group having 1 to 20 carbon atoms.
- each R 11 is independently an alkyl group having 1 to 20 carbon atoms or aryl. A group, a cycloalkyl group, a phenol group or an alkoxyalkyl group; )
- the compound represented by the general formula (7) has a high effect of suppressing discoloration of the polymer composition, and therefore, methyl acid phosphate, ethyl acid phosphate, butyl acid phosphate, butoxetyl acid phosphate , 2-ethylhexyl acid phosphate, bis (2-ethylhexyl) acid phosphate, oleyl acid phosphate, isodecyl acid phosphate, monoisodecyl acid phosphate, tetracosyl acid phosphate, ethylene glycol acid phosphate, and ( 2-hydroxylethyl) methacrylate acid phosphate is preferred.
- Examples of commercially available compounds represented by the general formula (7) include JP502, JP504. JP504A, JP506H, JP508, JP518, JP524R, EGAP ⁇ JPA-514, JPA-514A, DBP, manufactured by Johoku Chemical Industry Co., Ltd. LB58, AP-8, AP-4, AP-8, and AP-10 made by Daihachi Chemical Industry are listed.
- Examples of the compound represented by the general formula (8) include dimethylno, idrogen phosphite, jetyl hydrogen phosphite, dipropyl hydrogen phosphite, dibutylno, idrogen phosphite, di-2-ethyl.
- Examples of commercially available compounds represented by the general formula (8) include JP-202, JP-212, JP-213D, JP-218-OR, JP-260, and Sanko manufactured by Johoku Chemical Industry Co., Ltd. SANKO (trade name) —HCA manufactured by the company.
- Examples of the compound represented by the general formula (9) include dibutyl phosphate, bis (2-ethylhexyl) phosphate, monobutyl phosphate, and monoisodecyl phosphate.
- Examples of commercially available compounds represented by the general formula (9) include DBP and LB58 manufactured by Johoku Chemical Industry Co., Ltd., DP-4, MP-4, DP-8R and MP-10 manufactured by Daihachi Chemical Industry Co., Ltd. And PC-88A.
- Compound power represented by (7) and (8) At least one selected from ethyl acetate, butyl acid phosphate, 2-ethylhexyl acid phosphate is preferred.
- Bis (2-ethylhexyl) acid phosphate, diphenylhydrogen phosphite, and 9,10 dihydro-9-oxa-10 phosphophenanthrene-10-oxide are more preferable ethyl acid phosphate
- At least one selected from butyl acid phosphate, and 2-ethylhexyl acid phosphate is more preferable.
- the content of the component (c) in the polymer composition is preferably 0.01 to 2.0 parts by weight, more preferably 0.02 to: based on 100 parts by weight of the polymer.
- L is 8 parts by weight, more preferably 0.03: L 6 parts by weight.
- the content of the component (c) is less than 0.01 parts by weight with respect to 100 parts by weight of the polymer, it is difficult to sufficiently suppress discoloration of the polymer composition.
- the component (c) exceeds 2.0 parts by weight, the discoloration suppressing effect of the polymer composition is hardly improved.
- the polymer composition preferably further contains (d) a xeno compound (component (d)) in addition to the component (c).
- component (d) is at least one selected from the compound strength represented by the following general formula (10).
- each R 12 independently represents an alkyl group, aryl group, cycloalkyl group, full group, or alkoxycarboalkyl group having 1 to 20 carbon atoms.
- the compounds represented by the general formula (10) are classified as alkyl thioethers, and examples of the compounds include pentaerythritol-tetrakis (j8-lauryluthio-propionate), dilauryl 3,3'-thiodipropionate, dimyristyl. 3,3'-thiodipropionate, and distearyl 3,3 'thiodipropionate.
- Examples of commercially available compounds represented by the general formula (10) include Ilganox (trade name) PS800FL, PS802FL, Ilgafos (trade name) 168, manufactured by Ciba Specialty Chemicals, and a Sumitizer manufactured by Sumitomo Chemical Co., Ltd. (Product name) WX-R, TPL-R, TMP, TPS, and TP-D are listed.
- the content of the component (d) in the polymer composition is preferably 0.01 to 2.0 parts by weight, more preferably 0.02 to: based on 100 parts by weight of the polymer.
- L is 8 parts by weight, more preferably 0.03: L 6 parts by weight.
- the content of the component (d) is less than 0.01 part by weight with respect to 100 parts by weight of the polymer, the effect of suppressing discoloration of the polymer composition by the component (d) is not sufficiently exerted.
- the component (d) exceeds 2.0 parts by weight, it is difficult to further improve the discoloration suppressing effect of the polymer composition.
- the polymer in the polymer composition is 1,2 polybutadiene having 1,2 bonds.
- the content of 1,2 bonds in 1,2 polybutadiene is 60% or more, preferably 70% or more, more preferably 75% or more, and most preferably 90% or more.
- the content of 1, 2 bonds is less than 60%, the effect of imparting heat aging resistance to the polymer composition by the components (a) and (b) is not sufficiently exhibited.
- 1,2 Polybutadiene can be obtained, for example, by polymerizing 1,3 butadiene in a hydrocarbon solvent.
- 1,2-Polybutadiene was polymerized using a catalyst containing a transition metal or an alkali metal because each component of (a) and (b) can impart excellent heat aging resistance to the polymer composition.
- the catalyst containing a transition metal or an alkali metal include a cobalt catalyst, a cobalt phosphine catalyst, and an alkyl lithium catalyst.
- 1,2-polybutadiene can impart more excellent heat aging resistance to the polymer composition by the components (a) and (b), and (c) and (d).
- syndiotactic 1,2-polybutadiene polymerized by using a catalyst containing a transition metal or an alkali metal is more preferable.
- Syndiotactic 1,2-polybutadiene can be obtained, for example, by solution polymerization using a cobalt phosphate catalyst.
- the polymer composition may contain, for example, process oil and various fillers as other additive components.
- a polymer composition is manufactured through an addition process and a desolvation process.
- the components (a) and (b) and, if necessary, the components (c) and (d) are added to the polymer solution containing the polymer and its solvent.
- the polymer solution is a solution after the polymerization reaction is stopped by adding a polymerization terminator.
- each component is a known one
- the polymer solution is mixed by the method. For this mixing operation, for example, a roll, a Banbury or an extruder can be used.
- the order of adding each component to the polymer solution is not particularly limited.
- the components (a) to (d) and other added components may be simultaneously added to the polymer solution.
- the solvent in the polymer solution to which the respective components are added is removed, and a polymer composition containing the polymer and the respective components is obtained.
- a known method for example, a direct removal method and a steam stripping method, as well as a method of removing the solvent with a hot roll can be applied.
- the polymer composition is used in applications where importance is attached to the heat aging resistance, for example, toys, footwear, and household goods, and is also used as a fat improving agent.
- this polymer composition is used as a raw material for various molded articles, for example, after being pelletized.
- each of the components (a) and (b) is contained in the polymer composition, when the pellets are stored at a high temperature, for example, 1,2-polybutane is generated due to a crosslinking reaction. Gelling can be suppressed.
- the pellets are formed into various molded articles by a molding machine such as an extruder. At this time, by the components (a) and (b), gelling of 1,2-polybutadiene during heating and melting of the pellets can be sufficiently suppressed.
- this polymer composition can suppress bleeding of the components (a) and (b).
- this polymer composition can be obtained as a raw material.
- the appearance of certain products such as household and industrial products can be improved.
- using the characteristics of 1,2-polybutadiene When the polymer composition is used as a resin improver mixed with other resins, the polymer composition does not inhibit the heat aging resistance of the resin, and therefore the utility value of the polymer composition is very high. high.
- the content of the component (a) is 0.01 to 2.0 parts by weight with respect to 100 parts by weight of the polymer, and the content of the component (b) The amount is preferably 0.01 to 2.0 parts by weight with respect to 100 parts by weight of the polymer.
- the polymer composition of this embodiment preferably further comprises a component (c).
- the component (c) which is a specific phosphorus compound, is presumed to act synergistically with the component (b) on the polymer, and can suppress discoloration accompanying heating of the polymer composition.
- the polymer composition more preferably further contains the component (d).
- discoloration of the polymer composition can be further suppressed.
- the polymer is preferably syndiotactic 1,2-polybutadiene polymerized with a catalyst containing a transition metal or an alkali metal.
- a catalyst containing a transition metal or an alkali metal When configured in this manner, excellent heat aging resistance can be imparted to the polymer composition by the components (a) and (b). Further, when the polymer composition contains the components (c) and (d), the discoloration of the polymer composition due to the transition metal or alkali metal remaining in the polymer composition in a trace amount is suppressed. be able to.
- the method for producing the polymer composition of this embodiment comprises the steps of adding each of the components (a) and (b) to the polymer solution after stopping the solution polymerization, and a solvent contained in the polymer solution. Removing the solvent.
- each component of (a) and (b) is blended in the polymer composition obtained after the desolvation step! Therefore, during the heating accompanying the pelletized soy sauce after the desolvation step, etc. , (A) and (b) can reliably exhibit the heat aging resistance.
- the polymer composition contains the component (c)
- the discoloration of the polymer composition can be effectively suppressed by suppressing the discoloration of the polymer in the desolvation step.
- component (a) 0.16 parts by weight of 4,6-bis (octylthiomethyl) 1-o-tolesol as component (a) was blended with respect to 100 parts by weight of the polymer. Furthermore, 0.1 part by weight of n-octadecyl-3- (3,5-ditert-butyl-4-hydroxyphenol) propionate was added as component (b) to 100 parts by weight of the polymer. Then, the polymer composition was prepared by removing the solvent in the polymer solution with an evaporator.
- Example 2 polymer compositions were prepared in the same manner as in Example 1 except that the blending ratios of the components (a) and (b) were changed as shown in Table 1.
- Example 5 in addition to the components (a) and (b), 2-ethyl hexyl acid phosphate as a component (c) was added in an amount of 0.05 parts by weight with respect to 100 parts by weight of the polymer.
- Example D Dilauryl as ingredient-3, A polymer composition was prepared in the same manner as in Example 1, except that 0.2 parts by weight of 3-thiodipropionate was blended with respect to 100 parts by weight of the polymer.
- (b) -2 represents pentaerythritol tetrakis [3— (3,5 di-tert-butyl 4-hydroxyl-phenol) propionate],
- (b) -3 represents 2,2 dihydroxy-1,3,3 bis (methylcyclohexyl) -1,5,5 dimethyldiphenylmethane,
- (c) 1 represents 2-ethylhexyl acid phosphate
- (d) -1 represents dilauryl 3,3 thiodipropionate
- (d) 2 represents didodecyl-3,3 thiodipropionate.
- a sheet (length and width: 150 mm, thickness: 2 mm) was formed, and the sheet lg was immersed in 100 ml of toluene, and then at 50 ° C.
- the polymer composition was dissolved in toluene by shaking for 2 hours.
- the solution was filtered through a 200-mesh stainless steel wire mesh, and the residue (undissolved gel) on the wire mesh was dried. Subsequently, the weight of the residue after drying was measured, and the ratio (gel content) of the gelled polymer in the polymer contained in the sheet was calculated.
- the sheet of each example was cut into 5 mm square pieces and then placed in a cell having a diameter of 50 mm. After that, according to JIS K 7105-1981 (Plastic optical property test method) by the reflection method using SM color computer (model: SM-3, manufactured by Suga Test Instruments Co., Ltd.) Index) values were measured. These results are also shown in Table 1.
- a sheet (diameter: 50 mm, thickness: 2 mm) was formed by pressing the polymer composition of each example with a press. Subsequently, the sheet of each example was allowed to stand in a gear oven at 170 ° C. and in an air atmosphere for 6 hours. Then, each sheet is taken out from the gear oven, left at room temperature (25 ° C) for 1 hour, and (I) the gel content is measured in the same manner as in the evaluation immediately after preparation. In addition, the YI value of the sheet was measured by a reflection method using an SM color computer (model: SM-3, manufactured by Suga Test Instruments Co., Ltd.) in accordance with JIS K 7105-1981 (plastic optical property test method). . These results are listed in Table 1.
- the amount of increase in gel is 2.04% or less, and it can be seen that the polymer composition is sufficiently imparted with heat aging resistance.
- the gel increase amount is 73.90% or more, which indicates that the heat aging resistance of the polymer composition is low.
- the amount of increase in YI value in each example shows a value smaller than the amount of increase in YI value in each comparative example, the polymer composition of each example is suppressed from discoloration due to heating.
- the amount of increase in YI value in Example 5 is lower than the amount of increase in YI value in Examples 1 to 4.
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Abstract
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JP2004214766 | 2004-07-22 | ||
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4844335A (ja) * | 1971-05-28 | 1973-06-26 | ||
JPH04252243A (ja) * | 1991-01-29 | 1992-09-08 | Nippon Erasutomaa Kk | 共役ジエン系ゴム組成物 |
JPH11106562A (ja) * | 1997-09-30 | 1999-04-20 | Nippon Zeon Co Ltd | ジエン系ゴム組成物 |
JP2000103906A (ja) * | 1998-09-29 | 2000-04-11 | Asahi Chem Ind Co Ltd | 共役ジエン系重合体組成物 |
JP2003041008A (ja) * | 2001-07-27 | 2003-02-13 | Jsr Corp | マスターバッチ |
-
2005
- 2005-07-20 WO PCT/JP2005/013335 patent/WO2006009182A1/ja active Application Filing
- 2005-07-21 TW TW094124756A patent/TW200611919A/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4844335A (ja) * | 1971-05-28 | 1973-06-26 | ||
JPH04252243A (ja) * | 1991-01-29 | 1992-09-08 | Nippon Erasutomaa Kk | 共役ジエン系ゴム組成物 |
JPH11106562A (ja) * | 1997-09-30 | 1999-04-20 | Nippon Zeon Co Ltd | ジエン系ゴム組成物 |
JP2000103906A (ja) * | 1998-09-29 | 2000-04-11 | Asahi Chem Ind Co Ltd | 共役ジエン系重合体組成物 |
JP2003041008A (ja) * | 2001-07-27 | 2003-02-13 | Jsr Corp | マスターバッチ |
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