CN101434672B - Method for preparing thermostable syndiotactic 1,2-polybutadiene thermoplastic elastomer - Google Patents
Method for preparing thermostable syndiotactic 1,2-polybutadiene thermoplastic elastomer Download PDFInfo
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- CN101434672B CN101434672B CN2008100516166A CN200810051616A CN101434672B CN 101434672 B CN101434672 B CN 101434672B CN 2008100516166 A CN2008100516166 A CN 2008100516166A CN 200810051616 A CN200810051616 A CN 200810051616A CN 101434672 B CN101434672 B CN 101434672B
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Abstract
The invention provides a method for preparing thermo-stable syndiotactic 1, 2-polybutadiene thermoplastic elastomers. The method takes a compound with anti-aging function as a component of a catalyst, and can cause an age inhibitor to be evenly dispersed in the irregular 1, 2-polybutadiene thermoplastic elastomers. The syndiotactic 1, 2-polybutadiene thermoplastic elastomers prepared have excellent thermal stability. The thermo-stable syndiotactic 1, 2-polybutadiene thermoplastic elastomers prepared through the method have 1, 2-structure with content over 80 percent, and have a syndiotactic degree larger than 70 percent and the fusing temperature between 115 DEG C to 150 DEG C.
Description
Technical field
The invention belongs to thermally-stabilised with 1,2-polyhutadiene method for producing thermoplastic elastomer.
Background technology
Between with 1,2-polyhutadiene thermoplastic elastomer is a kind of unique material that has plastics and rubber properties simultaneously.Between with 1,2-polyhutadiene thermoplastic elastomer is a kind of high vinyl polybutadiene polymkeric substance, its side vinyl alternative is arranged in the both sides of polymer molecule main chain.Between with 1,2-polyhutadiene thermoplastic elastomer be meant degree of crystallinity in 5% to 50% scope between with 1, the 2-polybutadiene polymers.When with 1,2-polyhutadiene degree of crystallinity is lower than at 5% o'clock, is a kind of rubber, does not have thermoplasticity; When with 1,2-polyhutadiene degree of crystallinity is higher than at 50% o'clock, is a kind of thermoplastic resin, but does not have elasticity.
In eighties of last century seventies, adopt cobalt series catalyst realized between with 1,2-polyhutadiene thermoplastic elastomer industrial production, solvent is the big halogenated alkane of toxicity (ACS Sympsiwm Series4:15,1974.Japan rubber association will, 52 (8): 481-492, (1979).
In recent years, Japanese bridge stone company finds to add the hydrogen phosphite dialkyl by Fe-series catalyst [HP (O) (OR)
2] or hydrogen phosphite cycloalkyl ester reagent, and with the fat hydrocarbon do solvent can make melt temperature between 130 ℃-180 ℃ crystallinity with 1,2-polyhutadiene (EP0994129A
1, EP0994130A, US6277779, WO0149753A
1).But between manufacturing with 1,2-polyhutadiene thermoplastic elastomer is wrapped in solvent in the polymkeric substance in polymerization process, form a kind of pseudo-gels state material, anti-aging agent is difficult to be distributed to uniformly in the polymkeric substance, causes polymkeric substance gelation in the aftertreatment and the course of processing.
For between solving with 1, the gelation problems of 2-polyhutadiene thermoplastic elastomer in building-up process, Japan bridge stone company adopts under 80 ℃ of high temperature polymerization and adds anti-aging agent 2, the method (US2003/0040594A1) of 6-dialkyl-4-(dialkyl aminomethyl) phenol, reason are that the pseudo-gels material that generates can only have flowability being higher than under 80 ℃ the temperature.Since between with 1, have a large amount of tertiary carbon hydrogen and side vinyl on the 2-polyhutadiene thermoplastic elastomer molecular chain, be difficult to avoid producing branching and crosslinked at high temperature polymerization process; At high temperature add anti-aging agent operation more complicated, even owing to polymer fluid viscosity under 80 ℃ high temperature is bigger, anti-aging agent is dispersed in uniformly certain degree of difficulty in the polymkeric substance, and high-temperature operation is carrying out can causing high energy consumption when industrialization is produced.
Summary of the invention
Provided by the invention thermally-stabilised with 1, the step and the condition of 2-polyhutadiene method for producing thermoplastic elastomer are as follows:
Order of addition(of ingredients) is followed successively by: 1, the organic compound of 3-divinyl/solvent oil polymeric solution, transition metal ferro element, hydrogen phosphite dialkyl compounds, organo-aluminium compound and 2,6-dialkyl-4-(dialkyl aminomethyl) phenol, perhaps be followed successively by: 1,3-divinyl/solvent oil polymeric solution, 2, organic compound, hydrogen phosphite dialkyl compounds and the organo-aluminium compound of 6-dialkyl-4-(dialkyl aminomethyl) phenol, transition metal ferro element;
The iron that uses is that each catalyst component of catalyst system is formed with proportioning as follows:
1) iron is that each catalyzer of catalyst system is (to be abbreviated as: Fe), organo-aluminium compound (is abbreviated as: Al), (be abbreviated as: P) and 2, (be abbreviated as: N) four components constitute 6-dialkyl-4-(dialkyl aminomethyl) phenol hydrogen phosphite dialkyl compounds by the organic compound of transition metal ferro element;
2) iron is that each catalyst component proportioning of catalyst system is as follows: the mol ratio of Fe and Bd is 1.0 * 10
-5To 1.0 * 1
-3The mol ratio of Al and Fe is 12.5 to 50; The mol ratio of P and Fe is 0.1 to 10; The mol ratio of N and Bd is 0.0001 to 0.01; Described Bd represents 1,3-butadiene;
Described iron is that the organic compound of catalyst system transition metal ferro element is that isocaprylic acid iron, isocaprylic acid are ferrous, iron naphthenate, naphthenic acid are ferrous, neodecanoic acid iron, neodecanoic acid are ferrous, Acetyl Acetone iron, Acetyl Acetone is ferrous or their mixture;
Described iron is that catalyst system component organo-aluminium compound is that triethyl aluminum or trioctylaluminum and triisobutyl aluminium blend are used, and triethyl aluminum or trioctylaluminum, with the mol ratio of triisobutyl aluminium be 0.5 to 19;
Described iron is that catalyst system component hydrogen phosphite dialkyl compounds is dimethylphosphite, diethyl phosphite, dibutyl phosphite, phosphorous acid di-isooctyl, phosphorous acid two peopentyl esters, phosphorous acid ring propyl ester or their mixture;
Described iron is catalyst system component 2, and 6-dialkyl-4-(dialkyl aminomethyl) phenol is 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol;
Described solvent oil is: butane, pentane, hexane, heptane, octane or their mixture;
Processing condition are: 1, the concentration range of 3-divinyl is per 100 milliliter 1, contain 1 in 3-divinyl/solvent oil polymeric solution, 3-divinyl 1 restrains 62 grams, polymerization temperature is-20 ℃ to 100 ℃, polymerization time is 1 hour to 12 hours, obtains thermally-stabilised with 1,2-polyhutadiene thermoplastic elastomer.
Beneficial effect: manufacture method provided by the invention, thermally-stabilised of manufacturing with 1, and 1 of 2-polyhutadiene thermoplastic elastomer, 2-structural content be greater than 80%, and be unison greater than 70%, and melt temperature is between 115 ℃ to 150 ℃; 2,6-dialkyl-4-(dialkyl aminomethyl) phenol reaches molecular level and disperses with 1 in the 2-polyhutadiene thermoplastic elastomer, improved the thermostability of polymkeric substance.
The present invention has broken through traditional technology idea, make good heat stability between with 1,2-polyhutadiene thermoplastic elastomer.In the present invention, introduce 2 in the polymeric catalyst system, 6-dialkyl-4-(dialkyl aminomethyl) phenol is as a component of catalyzer.2,6-dialkyl-4-(dialkyl aminomethyl) phenol itself is a kind of very effective thermo-stabilizer of vinyl polybutadiene polymkeric substance and anti-aging agent.Traditional view thinks that anti-aging agent is a kind of stopper of coordination catalyst, to the toxic effect of catalyzer, thereby all is to add anti-aging agent in the stage that polymerization finishes; The invention provides a kind of effective means, before beginning, initial stage of polyreaction or polymerization just add 2,6-dialkyl-4-(dialkyl aminomethyl) phenol, make it as a catalyst component, it does not only damage catalyzer, also catalyst system is carried out modification, energy telo merization speed, and in polymerization process, prevent the heat cross-linking of polymkeric substance, the antioxygen chemoprevention that has kept it in the polymkeric substance of manufacturing acts on always, can in wide catalyzer regulation range, make simultaneously good heat stability between same 1,2-polyhutadiene thermoplastic elastomer.
Adopt manufacture method of the present invention, polyreaction can be carried out under lower polymerization temperature, and anti-aging agent is evenly distributed in the polymkeric substance, because in polymerization process, 2,6-dialkyl-4-(dialkyl aminomethyl) phenol together is incorporated in the polymkeric substance with catalyzer; Adopt manufacture method of the present invention, polyreaction can be carried out under higher polymerization temperature, and in high temperature polymerization process 2,6-dialkyl-4-(dialkyl aminomethyl) phenol prevents the heat cross-linking of polymkeric substance, avoids generating gel.
The invention provides a kind of manufacturing technology that need not finish interpolation anti-aging agent in back in polymerization.Under the situation that does not add anti-aging agent, adopt good heat stability that the present invention makes between with 1, in the 2-polyhutadiene thermoplastic elastomer, 2, the weight ratio of 6-dialkyl-4-(dialkyl aminomethyl) phenol and polymkeric substance can reach 4.5%, and polymkeric substance has good thermostability.
Description of drawings
Fig. 1 is the DSC spectrogram of the polymkeric substance that makes of comparative example 1.The melt temperature of polymkeric substance is 123.8 ℃, when Heating temperature surpasses 150 ℃, significantly gliding appears in the DSC spectral line, the polymer reaction heat release is described, heat cross-linking has taken place in the polymkeric substance that obtains in heat-processed, proof comparative example 1 obtain between with 1,2-polyhutadiene thermoplastic elastomer thermal stability is poor; And do not measure the second-order transition temperature of polymkeric substance at cold zone, illustrate that heat cross-linking has just taken place polymkeric substance in building-up process.
Fig. 2 is the DSC spectrogram of the polymkeric substance that makes of embodiment 1.The melt temperature of polymkeric substance is 118.3 ℃, second-order transition temperature is-10.9 ℃, illustrates that the polymkeric substance that obtains is a kind of thermoplastic elastomer, and polymkeric substance in heat-processed, show very stable, proof obtain between with 1,2-polyhutadiene thermoplastic elastomer has good thermostability.
Embodiment
Comparative example 1
Under nitrogen protection, in the single port 100ml reaction flask of crossing through the overbaking drying treatment, add dry hexane 50ml, dry divinyl 7g, add each component of catalyzer then in the following order successively: isocaprylic acid iron 0.010mmol, diethyl phosphite 0.025mmol, triisobutyl aluminium 0.050mmol, triethyl aluminum 0.200mmol; Put into 50 ℃ of water bath with thermostatic control polymerizations 6 hours, mixture with polymkeric substance and solvent stirs pulverizing then, add and contain 0.27mmol stablizer 2, the 2.0ml spirituous solution of 6-di-t-butyl-4-(dimethylaminomethyl) phenol stops, isolate polymkeric substance, remove be put in behind the solvent in the vacuum drying oven dry under the vacuum, polymer samples 5.6g, yield 80%.Through dsc analysis, the melt temperature of polymkeric substance is 123.8 ℃.
Embodiment 1
Under nitrogen protection, in the single port 100ml reaction flask of crossing through the overbaking drying treatment, add dry hexane 50ml, dry divinyl 7g, add each component of catalyzer then in the following order successively: 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol 0.12mmol, isocaprylic acid iron 0.010mmol, diethyl phosphite 0.025mmol, triisobutyl aluminium 0.050mmol, triethyl aluminum 0.200mmol; Put into 50 ℃ of water bath with thermostatic control polymerizations 6 hours, the mixture with polymkeric substance and solvent stirs pulverizing then, adds the alcohol/hexane mixing solutions that contains 0.5ml alcohol and stops, isolate polymkeric substance, remove be put in behind the solvent in the vacuum drying oven dry under the vacuum, polymer samples 6.0g, yield 86%.Through dsc analysis, the second-order transition temperature of polymkeric substance is-10.9 ℃, and melt temperature is 118.3 ℃; Through 1 of 1H-NMR analyzing polymers, the 2-structural content is 83.4; Unison through between the 13C-NMR analyzing polymers is 78.8%.
Embodiment 2～4
Except that triisobutyl aluminium and triethyl aluminum consumption see Table 1, remaining is entirely with embodiment 1.
Table 1
| Embodiment | 1 | 2 | 3 | 4 |
| Triisobutyl aluminium (mmol) | 0.050 | 0.100 | 0.160 | 0.013 |
| Triethyl aluminum (mmol) | 0.200 | 0.150 | 0.080 | 0.247 |
| Triethyl aluminum/triisobutyl aluminium (mol ratio) | 4.0 | 1.5 | 0.5 | 19.0 |
| Yield (%) | 86 | 91 | 94 | 85 |
| N/Bd (% weight ratio) | 0.45 | 0.45 | 0.45 | 0.45 |
| Second-order transition temperature (℃) | -10.9 | 8.5 | 18.5 | -11.3 |
| Melt temperature (℃) | 118.3 | 135.4 | 149.8 | 115.1 |
Embodiment 5
Under nitrogen protection, in the single port 100ml reaction flask of crossing through the overbaking drying treatment, add dry heptane 50ml, dry divinyl 7g, add each component of catalyzer then in the following order successively: ferric acetyl acetonade 0.010mmol, diethyl phosphite 0.025mmol, triisobutyl aluminium 0.050mmol, triethyl aluminum 0.200mmol, 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol 0.12mmol; Put into 50 ℃ of water bath with thermostatic control polymerizations 6 hours, the mixture with polymkeric substance and solvent stirs pulverizing then, adds the alcohol/hexane mixing solutions that contains 0.5ml alcohol and stops, isolate polymkeric substance, remove be put in behind the solvent in the vacuum drying oven dry under the vacuum, polymer samples 6.4g, yield 91%.Through dsc analysis, the second-order transition temperature of polymkeric substance is-10.5 ℃, and melt temperature is 117.9 ℃; Warp
11 of H-NMR analyzing polymers, 2-structural content are 84.1; Warp
13Unison between the C-NMR analyzing polymers is 80.2%.
Embodiment 6～9
Except that triisobutyl aluminium and triethyl aluminum consumption see Table 2, all the other are entirely with embodiment 5.
| Embodiment | 5 | 6 | 7 | 8 | 9 |
| Triisobutyl aluminium (mmol) | 0.050 | 0.025 | 0.040 | 0.070 | 0.100 |
| Triethyl aluminum (mmol) | 0.200 | 0.100 | 0.160 | 0.280 | 0.400 |
| Triethyl aluminum/triisobutyl aluminium (mol ratio) | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 |
| Total consumption/ferric acetyl acetonade (mol ratio) of Al | 25 | 12.5 | 20 | 35 | 50 |
| Yield (%) | 91 | 92 | 96 | 88 | 75 |
| N/Bd (% weight ratio) | 0.45 | 0.45 | 0.45 | 0.45 | 0.45 |
| Second-order transition temperature (℃) | -10.5 | -16.7 | -10.8 | -10.1 | -9.2 |
| Melt temperature (℃) | 117.9 | 119.6 | 118.5 | 120.7 | 122.1 |
Embodiment 10
Under nitrogen protection, the mixture that in the single port 100ml reaction flask of crossing through the overbaking drying treatment, adds dry 10ml butane, 10ml pentane and 30ml octane, dry divinyl 7g, add each component of catalyzer then in the following order successively: 0.005mmol iron naphthenate and 0.005mmol neodecanoic acid ferrous mixture, 0.010mmol phosphorous acid di-isooctyl and 0.015mmol dimethylphosphite mixture, triisobutyl aluminium 0.050mmol, trioctylaluminum 0.200mmol, 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol 0.12mmol; Put into 30 ℃ of water bath with thermostatic control polymerizations 9 hours, the mixture with polymkeric substance and solvent stirs pulverizing then, adds the alcohol/hexane mixing solutions that contains 0.5ml alcohol and stops, isolate polymkeric substance, remove be put in behind the solvent in the vacuum drying oven dry under the vacuum, polymer samples 5.6g, yield 80%.Through dsc analysis, the second-order transition temperature of polymkeric substance is-8.2 ℃, and melt temperature is 125.1 ℃.
Embodiment 11
Under nitrogen protection, in the single port 100ml reaction flask of crossing through the overbaking drying treatment, add dry octane 50ml, dry divinyl 7g, add each component of catalyzer then in the following order successively: the ferrous 0.010mmol of neodecanoic acid, phosphorous acid ring propyl ester 0.025mmol, triisobutyl aluminium 0.050mmol, triethyl aluminum 0.200mmol, 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol 0.12mmol; Put into 70 ℃ of water bath with thermostatic control polyase 13s hour, the mixture of polymkeric substance and solvent is stirred pulverize then, add the alcohol/hexane mixing solutions that contains 0.5ml alcohol and stop, isolate polymkeric substance, remove be put in behind the solvent in the vacuum drying oven dry under the vacuum, polymer samples 6.5g, yield 93%.
Embodiment 12
Under nitrogen protection, in the single port 100ml reaction flask of crossing through the overbaking drying treatment, add dry hexane 50ml, dry divinyl 7g, add each component of catalyzer then in the following order successively: 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol 0.12mmol, isocaprylic acid iron 0.010mmol, dimethylphosphite 0.025mmol, triisobutyl aluminium 0.050mmol, triethyl aluminum 0.200mmol; Put into 50 ℃ of water bath with thermostatic control polymerizations 6 hours, the mixture with polymkeric substance and solvent stirs pulverizing then, adds the alcohol/hexane mixing solutions that contains 0.5ml alcohol and stops, isolate polymkeric substance, remove be put in behind the solvent in the vacuum drying oven dry under the vacuum, polymer samples 6.6g, yield 94%.Through dsc analysis, the second-order transition temperature of polymkeric substance is-9.8 ℃, and melt temperature is 120.4 ℃.
Embodiment 13～16
Except that each amounts of components of catalyzer and polymerization time see Table 3, all the other are entirely with embodiment 12.
Table 3
| Embodiment | 12 | 13 | 14 | 15 | 16 |
| 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol (mmol) | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 |
| N/Bd (% weight ratio) | 0.45 | 0.45 | 0.45 | 0.45 | 0.45 |
| Isocaprylic acid iron (mmol) | 0.010 | 0.001 | 0.007 | 0.039 | 0.130 |
| Isocaprylic acid iron/monomer (mol ratio) * 10 4 | 0.77 | 0.10 | 0.50 | 3.0 | 10 |
| Dimethylphosphite (mmol) | 0.025 | 0.003 | 0.016 | 0.098 | 0.325 |
| Dimethylphosphite/isocaprylic acid iron (mol ratio) | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
| Triisobutyl aluminium (mmol) | 0.050 | 0.007 | 0.033 | 0.20 | 0.65 |
| Triethyl aluminum (mmol) | 0.200 | 0.026 | 0.133 | 0.80 | 2.60 |
| Triethyl aluminum/triisobutyl aluminium (mol ratio) | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 |
| Total consumption/ferric acetyl acetonade (mol ratio) of Al | 25 | 25 | 25 | 25 | 25 |
| Polymerization time (h) | 6.0 | 12.0 | 8.0 | 2.0 | 1.0 |
| Yield (%) | 94 | 70 | 88 | 100 | 100 |
| Second-order transition temperature (℃) | -9.8 | -8.1 | -10.2 | -9.1 | -10.6 |
| Melt temperature (℃) | 120.4 | 130.8 | 120.5 | 121.2 | 120.1 |
Embodiment 17
Under nitrogen protection, in the single port 100ml reaction flask of crossing through the overbaking drying treatment, add dry pentane 50ml, dry divinyl 7g, add each component of catalyzer then in the following order successively: 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol 0.12mmol, isocaprylic acid iron 0.010mmol, dibutyl phosphite 0.030mmol, triisobutyl aluminium 0.050mmol, triethyl aluminum 0.200mmol; Put into 50 ℃ of water bath with thermostatic control polymerizations 6 hours, the mixture with polymkeric substance and solvent stirs pulverizing then, adds the alcohol/hexane mixing solutions that contains 0.5ml alcohol and stops, isolate polymkeric substance, remove be put in behind the solvent in the vacuum drying oven dry under the vacuum, polymer samples 6.5g, yield 93%.Through dsc analysis, the second-order transition temperature of polymkeric substance is-9.7 ℃, and melt temperature is 119.3 ℃.
Embodiment 18～23
Remove 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol usage sees Table outside 4, and all the other are entirely with embodiment 17.
Table 4
| Embodiment | 18 | 19 | 20 | 21 | 22 | 23 |
| 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol (mmol) | 0.013 | 0.10 | 0.20 | 0.40 | 0.70 | 1.30 |
| N/Bd (% weight ratio) | 0.05 | 0.38 | 0.75 | 1.51 | 2.63 | 4.90 |
| N/Fe (mol ratio) | 1.3 | 10 | 20 | 40 | 70 | 130 |
| N/Bd (mol ratio) * 10 4 | 1.0 | 7.8 | 15.5 | 31.0 | 54.3 | 100.0 |
| Yield (%) | 94 | 91 | 89 | 86 | 90 | 88 |
| Second-order transition temperature (℃) | -9.1 | -9.6 | -10.6 | -10.9 | -11.4 | -15.1 |
| Melt temperature (℃) | 121.5 | 120.1 | 119.3 | -117.6 | 116.7 | 115.6 |
Embodiment 24
Under nitrogen protection, in the withstand voltage reaction flask of crossing through the overbaking drying treatment of single port 50ml, add dry divinyl 7g, add each component of catalyzer then in the following order successively: 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol 0.15mmol, isocaprylic acid iron 0.020mmol, phosphorous acid two peopentyl ester 0.200mmol, triisobutyl aluminium 0.100mmol, triethyl aluminum 0.400mmol; Put into-20 ℃ of calcium chloride cryosel water-bath polymerizations 12 hours, then mixture is pulverized, add the alcohol/hexane mixing solutions that contains 0.5ml alcohol and stop, isolate polymkeric substance, remove be put in behind the fugitive constituent in the vacuum drying oven dry under the vacuum, polymer samples 5.2g, yield 74%.Through dsc analysis, the second-order transition temperature of polymkeric substance is-8.2 ℃, and melt temperature is 125.4 ℃.
Embodiment 25
Under nitrogen protection, in the withstand voltage reaction flask of crossing through the overbaking drying treatment of single port 500ml, add dry octane 394ml, dry divinyl 4g, add each component of catalyzer then in the following order successively: neodecanoic acid iron 0.050mmol, phosphorous acid two peopentyl ester 0.005mmol, triisobutyl aluminium 0.250mmol, triethyl aluminum 0.500mmol and 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol 0.40mmol; Put into 100 ℃ of boiling water bath polymerizations 1 hour, add 5.0ml alcohol then and stop polymerization, the polymer fluid concentrating and separating is gone out polymkeric substance, remove be put in the vacuum drying oven behind the solvent dry under the vacuum, polymer samples 3.4g, yield 85%.Through dsc analysis, the second-order transition temperature of polymkeric substance is-12.2 ℃, and melt temperature is 115.4 ℃.
Claims (1)
1. thermally-stabilised with 1,2-polyhutadiene method for producing thermoplastic elastomer, and its step and condition are as follows:
Order of addition(of ingredients) is followed successively by: 1, the organic compound of 3-divinyl/solvent oil polymeric solution, transition metal ferro element, hydrogen phosphite dialkyl compounds, organo-aluminium compound and 2,6-dialkyl-4-(dialkyl aminomethyl) phenol, perhaps be followed successively by: 1,3-divinyl/solvent oil polymeric solution, 2, organic compound, hydrogen phosphite dialkyl compounds and the organo-aluminium compound of 6-dialkyl-4-(dialkyl aminomethyl) phenol, transition metal ferro element; Before beginning, initial stage of polyreaction or polymerization just add 2,6-dialkyl-4-(dialkyl aminomethyl) phenol;
The iron that uses is that each catalyst component of catalyst system is formed with proportioning as follows:
1) iron is that each catalyzer of catalyst system is organic compound, organo-aluminium compound, the hydrogen phosphite dialkyl compounds and 2 by the transition metal ferro element, and four components of 6-dialkyl-4-(dialkyl aminomethyl) phenol constitute;
2) iron is that each catalyst component proportioning of catalyst system is as follows: the organic compound of transition metal ferro element and the mol ratio of 1,3-butadiene are 1.0 * 10
-5To 1.0 * 10
-3The mol ratio of the organic compound of organo-aluminium compound and transition metal ferro element is 12.5 to 50; The mol ratio of the organic compound of hydrogen phosphite dialkyl compounds and transition metal ferro element is 0.1 to 10; 2, the mol ratio of 6-dialkyl-4-(dialkyl aminomethyl) phenol and 1,3-butadiene is 0.0001 to 0.01;
Described iron is that the organic compound of catalyst system transition metal ferro element is that isocaprylic acid iron, isocaprylic acid are ferrous, iron naphthenate, naphthenic acid are ferrous, neodecanoic acid iron, neodecanoic acid are ferrous, Acetyl Acetone iron, Acetyl Acetone is ferrous or their mixture;
Described iron is that catalyst system component organo-aluminium compound is that triethyl aluminum or trioctylaluminum and triisobutyl aluminium blend are used, and triethyl aluminum or trioctylaluminum, with the mol ratio of triisobutyl aluminium be 0.5 to 19;
Described iron is that catalyst system component hydrogen phosphite dialkyl compounds is dimethylphosphite, diethyl phosphite, dibutyl phosphite, phosphorous acid di-isooctyl, phosphorous acid two peopentyl esters, phosphorous acid ring propyl ester or their mixture;
Described iron is catalyst system component 2, and 6-dialkyl-4-(dialkyl aminomethyl) phenol is 2,6-di-t-butyl-4-(dimethylaminomethyl) phenol;
Described solvent oil is: butane, pentane, hexane, heptane, octane or their mixture;
Processing condition are: 1, the concentration range of 3-divinyl is per 100 milliliter 1, contain 1 in 3-divinyl/solvent oil polymeric solution, 3-divinyl 1 restrains 62 grams, polymerization temperature is-20 ℃ to 100 ℃, polymerization time is 1 hour to 12 hours, obtains thermally-stabilised with 1,2-polyhutadiene thermoplastic elastomer.
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Application publication date: 20090520 Assignee: Huangpu Material Research Institute Dawan District Guangdong Hong Kong and Macao Assignor: CHANGCHUN INSTITUTE OF APPLIED CHEMISTRY CHINESE ACADEMY OF SCIENCES Contract record no.: X2023220000002 Denomination of invention: Method for manufacturing thermally stable syndiotactic 1,2-polybutadiene thermoplastic elastomers Granted publication date: 20110504 License type: Common License Record date: 20230316 |