WO2013039152A1 - 末端二重結合含有ポリオレフィンとその製造方法 - Google Patents
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- WO2013039152A1 WO2013039152A1 PCT/JP2012/073478 JP2012073478W WO2013039152A1 WO 2013039152 A1 WO2013039152 A1 WO 2013039152A1 JP 2012073478 W JP2012073478 W JP 2012073478W WO 2013039152 A1 WO2013039152 A1 WO 2013039152A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/04—Monomers containing three or four carbon atoms
- C08F110/06—Propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/50—Partial depolymerisation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2810/00—Chemical modification of a polymer
- C08F2810/30—Chemical modification of a polymer leading to the formation or introduction of aliphatic or alicyclic unsaturated groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2810/00—Chemical modification of a polymer
- C08F2810/40—Chemical modification of a polymer taking place solely at one end or both ends of the polymer backbone, i.e. not in the side or lateral chains
Definitions
- the present invention relates to a novel terminal double bond-containing polyolefin and a method for producing the same.
- Polyolefins are used in various applications by taking advantage of the unique properties of polymers.
- polypropylene is characterized by being inexpensive, excellent in oil resistance, chemical resistance, and less in environmental impact.
- Patent Document 1 a process for producing an ⁇ ⁇ ⁇ -diene-oligomer having double bonds at both ends can be obtained by thermal decomposition of isotactic polypropylene.
- Patent Document 1 due to the low molecular weight of the obtained oligomer, it did not reach to fully exhibit the bulk properties of the polymer, that is, the polyolefin.
- An object of the present invention is to provide a polyolefin having a double bond at the end of an olefin and a method for producing the same.
- the present inventors have found that by controlling the thermal decomposition of polyolefin, a polyolefin having a double bond at the end can be obtained in a high yield, and the present invention completed.
- the polyolefin After purifying the polyolefin represented by the above, the polyolefin is melted and thermally decomposed at 330 to 370 ° C. while bubbling an inert gas under reduced pressure, to produce a polyolefin having a double bond at the end On the way.
- the polyolefin having a double bond at both ends has a structure of the above general formula (1), and the polyolefin having a double bond at one end has a structure of the above general formula (2).
- a polyolefin having a double bond at both ends and a polyolefin having a double bond at one end will be referred to as a polyolefin having a double bond at the end.
- each R is independently selected from the group consisting of H, -CH 3 , -C 2 H 5 , and -CH 2 CH (CH 3 ) 2 .
- polypropylene (R is all -CH 3 ), poly 1-butene (R is all -C 2 H 5 ), ethylene-propylene copolymer (R is H or -CH 3) ), Ethylene 1-butene copolymer (R is H or -C 2 H 5 ), propylene 1-butene copolymer (R is -CH 3 or -C 2 H 5 ) or poly 4-methyl- 1-Pentene (wherein R is all -CH 2 CH (CH 3 ) 2 ) and the like are included.
- a copolymer both a random copolymer and a block copolymer are included.
- R is preferably -CH 3 .
- m and n represent the repeating number of the monomer unit.
- m and n are 1,000 to 100,000. Preferably, it is 3000 to 8000.
- the polyolefin having a terminal double bond according to the present invention has a number average molecular weight (Mn) of 50,000 to 5,000,000 according to gel permeation chromatography (GPC). Preferably, it is 150,000 to 3,000,000. When Mn is less than 50,000, the characteristics as a polymer can not be exhibited.
- the polyolefin having a double bond at the end according to the present invention has a degree of dispersion (Mw / Mn) of molecular weight distribution of 5.0 or less. Preferably, it is 2.2 to 4.0.
- polyolefin having a double bond at the end according to the present invention has an average number of terminal vinylidene groups per molecule of 1.3 to 1.9.
- Polyolefin which is a raw material has the following general formula (3) (CH 2 -CHR) p (3) Is represented by Each R is H, -CH 3, -C 2 H 5, and -CH 2 CH (CH 3) is selected from the group consisting of 2 independent.
- p represents the repeating number of the monomer unit and is 3,000 to 3,000,000. Preferably, it is 5,000 to 2,000,000.
- the raw material polyolefin before decomposition is preferably purified.
- the purification method is not particularly limited, for example, it is dissolved in hot xylene and then poured into methanol for reprecipitation purification.
- the thermal decomposition product of polypropylene obtained by the controlled thermal decomposition method has a number average molecular weight Mn of 50,000 to 5,000,000, a dispersion degree Mw / Mn of 1.0 to 5.0, per molecule.
- the average number of double bonds is about 1.3 to 1.9, and it has the property of retaining the stereoregularity of the starting polypropylene before decomposition.
- the viscosity-average molecular weight of the raw material polypropylene before decomposition is preferably in the range of 1,000,000 to 100,000,000.
- the raw material polypropylene before decomposition is produced by a known method in the presence of a known catalyst such as a Ziegler-Natta catalyst composed of titanium trichloride and an alkylaluminum compound, or a composite catalyst composed of a magnesium compound and a titanium compound.
- a known catalyst such as a Ziegler-Natta catalyst composed of titanium trichloride and an alkylaluminum compound, or a composite catalyst composed of a magnesium compound and a titanium compound.
- a known catalyst such as a Ziegler-Natta catalyst composed of titanium trichloride and an alkylaluminum compound, or a composite catalyst composed of a magnesium compound and a titanium compound.
- a catalyst comprising a solid titanium catalyst component containing magnesium, titanium, a halogen and an electron donor, an organometallic compound, and (an electron donor is used as a highly stereoregular catalyst for producing polypropylene.
- the solid titanium catalyst component as described above can be prepared by contacting a magnesium compound, a titanium compound and an electron donor.
- thermal decomposition apparatus an apparatus disclosed in Journal of Polymer Science: Polymer Chemistry Edition, 21, 703 (1983) can be used.
- Polypropylene is put into the reaction vessel of Pyrex (R) glass thermal decomposition apparatus, and the molten polymer phase is vigorously bubbled with nitrogen gas under reduced pressure, and the secondary reaction is suppressed by extracting the volatile product.
- the thermal decomposition reaction is performed at a predetermined temperature for a predetermined time. After completion of the thermal decomposition reaction, the residue in the reaction vessel is dissolved in hot xylene, and after hot filtration, it is reprecipitated with alcohol and purified. The reprecipitated product is collected by filtration and vacuum dried to obtain polypropylene having a double bond at the end.
- the thermal decomposition conditions are adjusted by predicting the molecular weight of the product from the molecular weight of polypropylene before decomposition and the primary structure of the block copolymer of the final object, and taking into consideration the results of experiments conducted in advance.
- the thermal decomposition temperature is preferably in the range of 300 to 450.degree. More preferably, the temperature is 330 to 370 ° C. If the temperature is lower than 300 ° C., the thermal decomposition reaction of the polypropylene may not proceed sufficiently, and if the temperature is higher than 450 ° C., the deterioration of the telechelic polypropylene may proceed.
- the molecular weight was measured by a GPC analyzer (HLC-8121GPC / HT (manufactured by Tosoh Corp.)). At that time, ortho-dichlorobenzene was measured as a mobile phase, and the molecular weight in terms of polystyrene was determined.
- ECA 600 is used as 13 C-NMR (600 MHz)
- JNM-ECP 500 is used as 13 C-NMR (500 MHz). It measured on the basis of hexamethyldisiloxane using the mixed solvent of 2, 4- trichlorobenzene.
- Example 1 As a thermal decomposition apparatus, a small glass thermal decomposition apparatus was used. 5 g of isotactic polypropylene having a Mw of 68.5 million in terms of viscosity was charged in the reactor, and after replacing the system with nitrogen, the pressure was reduced to 2 mmHg, and the reactor was heated to 200 ° C. and melted. Thereafter, the reactor was immersed in a metal bath set at 370 ° C., and thermal decomposition was performed. During the thermal decomposition, the inside of the system was maintained at a reduced pressure of about 2 mmHg, and the molten polymer was stirred by bubbling nitrogen gas discharged from the introduced capillary.
- the obtained polymer had a yield of 96%, a number average molecular weight (Mn) of 96,000, and a degree of dispersion (Mw / Mn) of 2.2.
- the thermal decomposition product was confirmed to be isotactic polypropylene having a double bond at the end.
- the 13 C-NMR spectrum of the thermal decomposition product is shown in FIG.
- the 12.5 ppm signal (A) in 13 C NMR is derived from the n-propyl terminal carbon.
- the 20.5 ppm signal (a) is derived from the methyl carbon of the terminal vinylidene
- the 15.8 ppm signal (b) and the 23.7 ppm signal (c) are derived from the methyl carbon of the terminal trisubstituted double bond Do.
- the terminal trisubstituted double bond is considered to be generated because the polymerization catalyst remained.
- the average number of double bonds per molecule determined from the signal intensity ratio of these end groups was 1.65.
- Example 2 In the same manner as in Example 1, the reaction was carried out by changing the thermal decomposition temperature from 370 ° C. to 350 ° C.
- the obtained polymer had a yield of 99%, a number average molecular weight (Mn) of 253,000, and a degree of dispersion (Mw / Mn) of 3.1.
- Example 3 In the same manner as in Example 2, the reaction was carried out by changing the reaction time from 1 hour to 2 hours.
- the obtained polymer had a yield of 99%, a number average molecular weight (Mn) of 178,000, and a degree of dispersion (Mw / Mn) of 2.9.
- Example 4 In the same manner as in Example 3, the reaction was carried out by changing the thermal decomposition temperature from 350 ° C. to 330 ° C. The obtained polymer had a yield of 99%, a number average molecular weight (Mn) of 282,000, and a degree of dispersion (Mw / Mn) of 3.8.
- the 13 C-NMR spectrum of the thermal decomposition product is shown in the lower part of FIG.
- the 12.5 ppm signal (A) in 13 C NMR is derived from the n-propyl terminal carbon.
- the 20.5 ppm signal (a) is derived from the methyl carbon of terminal vinylidene.
- the 15.8 ppm signal (b) and the 23.7 ppm signal (c) observed in the 13 C-NMR spectrum of the product of Reference Example 1-1 have disappeared. That is, it can be seen that the purification of the raw material was able to suppress the formation of the terminal trisubstituted double bond.
- the average number of double bonds per molecule determined from the signal intensity ratio of these terminal groups was 1.79.
- the peak of tan ⁇ and the decrease in E ′ around 0 ° C. are derived from the glass transition temperature.
- it melt-ruptured in the 160 degreeC vicinity which is the crystal melting temperature of isotactic polypropylene.
- the polyolefin of the present invention has double bonds at one or both ends, and the average number of double bonds per molecule is large. Heretofore, it has not been possible to obtain such a polyolefin having a large molecular weight and a terminal double bond. Further, since the polyolefin according to the present invention has terminal double bonds, it has other olefins such as ethylene, propylene and isoprene, diolefins such as butadiene and isoprene, and vinyl double bonds such as styrene, acrylate and methacrylate. It is possible to copolymerize with monomers, and to incorporate and modify the properties of the polyolefin in these copolymers. In addition, since it is possible to introduce functional groups such as a hydroxyl group and a carboxy group at the end of a polymer chain by using terminal double bonds, it is used as a raw material for various polymer modifications and functional polymers. be able to.
Abstract
Description
で表される両末端に二重結合を有するポリオレフィン、および下記一般式(2)
で表される片末端に二重結合を有するポリオレフィンを包含し、数平均分子量(Mn)が5万~500万、分子量分布の分散度(Mw/Mn)が5.0以下であることを特徴とする末端に二重結合を有するポリオレフィンに関する。
で表される両末端に二重結合を有するポリオレフィン、および下記一般式(2)
で表される片末端に二重結合を有するポリオレフィンを包含し、1分子当たりの平均末端ビニリデン基数が1.3~1.9、数平均分子量(Mn)が5万~500万、分子量分布の分散度(Mw/Mn)が5.0以下である末端に二重結合を有するポリオレフィンの製造方法であって、下記一般式(3)
(CH2-CHR)p (3)
(式中、各RはH、-CH3、-C2H5、および-CH2CH(CH3)2からなる群から独立に選択され、pは3000~3000000の整数である。)
で表されるポリオレフィンを精製した後、前記ポリオレフィンを溶融させ、減圧下、不活性ガスをバブリングしつつ330~370℃で熱分解することを特徴とする、末端に二重結合を有するポリオレフィンの製造方法に関する。
(CH2-CHR)p (3)
で表される。各RはH、-CH3、-C2H5、および-CH2CH(CH3)2からなる群から独立に選択される。pはモノマー単位の繰返し数を表し、3000~3000000である。好ましくは、5000~2000000である。
下記に示す方法により、末端に二重結合を有するポリオレフィン(iPP-H)を合成した。
熱分解装置としてガラス製小型熱分解装置を使用した。粘度換算でMw=6850万のイソタクチックポリプロピレン5gを反応器に仕込み、系内を窒素置換後、2mmHgに減圧して、反応器を200℃に加熱して溶融した。その後、370℃に設定されたメタルバスに反応器を沈め、熱分解を行った。熱分解中は、系内を2mmHg程度の減圧状態に保ち、溶融ポリマーを導入されたキャピラリーから排出される窒素ガスのバブリングによって攪拌した。1時間経過後、反応器をメタルバスからあげ、室温まで冷却した後、反応系を常圧にし、反応器内の残渣を熱キシレンにて溶解した後、メタノールに滴下して再沈殿精製した。得られたポリマーは収率96%、数平均分子量(Mn)が96,000、分散度(Mw/Mn)が2.2であった。
実施例1と同様の方法において、熱分解温度を370℃から350℃に変更して、反応を行った。得られたポリマーは収率99%、数平均分子量(Mn)が253,000、分散度(Mw/Mn)が3.1であった。
実施例2と同様の方法において、反応時間を1時間から2時間に変更して、反応を行った。得られたポリマーは収率99%、数平均分子量(Mn)が178,000、分散度(Mw/Mn)が2.9であった。
実施例3と同様の方法において、熱分解温度を350℃から330℃に変更して、反応を行った。得られたポリマーは収率99%、数平均分子量(Mn)が282,000、分散度(Mw/Mn)が3.8であった。
実施例1と同様の方法において、熱分解温度を370℃から390℃に変更して、反応時間を1時間から3時間に変更して、反応を行った。得られたポリマーは収率53%、数平均分子量(Mn)が11,000、分散度(Mw/Mn)が2.2であった。熱分解生成物の13C-NMRスペクトルを図2上段に示す。13C-NMR測定により、末端基のシグナル強度比から求めた一分子あたりの二重結合の平均数は1.79であった。
粘度換算でMw=6850万のイソタクチックポリプロピレンを熱キシレンに溶解後、メタノールに注いで再沈殿精製した。参考例1-1と同様の方法において、反応を行った。得られたポリマーは収率54%、数平均分子量(Mn)が12,000、分散度(Mw/Mn)が2.2であった。
参考例1-1と同様の方法において、反応時間を3時間から1時間に変更して、反応を行った。得られたポリマーは収率91%、数平均分子量(Mn)が42,000、分散度(Mw/Mn)が2.3であった。
Claims (4)
- ポリオレフィンの熱分解生成物であって、下記一般式(1)
で表される両末端に二重結合を有するポリオレフィン、および下記一般式(2)
で表される片末端に二重結合を有するポリオレフィンを包含し、1分子当たりの平均末端ビニリデン基数が1.3~1.9、数平均分子量(Mn)が5万~500万、分子量分布の分散度(Mw/Mn)が5.0以下であることを特徴とする、末端に二重結合を有するポリオレフィン。 - RがCH3である、請求項1記載の末端に二重結合を有するポリオレフィン。
- 前記一般式(1)及び一般式(2)において、Xが-CR=CH2である、請求項1又は2に記載の末端に二重結合を有するポリオレフィン。
- 下記一般式(1)
で表される両末端に二重結合を有するポリオレフィン、および下記一般式(2)
で表される片末端に二重結合を有するポリオレフィンを包含し、1分子当たりの平均末端ビニリデン基数が1.3~1.9、数平均分子量(Mn)が5万~500万、分子量分布の分散度(Mw/Mn)が5.0以下である末端に二重結合を有するポリオレフィンの製造方法であって、
下記一般式(3)
(CH2-CHR)p (3)
(式中、各RはH、-CH3、-C2H5、および-CH2CH(CH3)2からなる群から独立に選択され、pは3000~3000000の整数である。)
で表されるポリオレフィンを精製した後、前記ポリオレフィンを溶融させ、減圧下、不活性ガスをバブリングしつつ330~370℃で熱分解することを特徴とする、末端に二重結合を有するポリオレフィンの製造方法。
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US14/344,480 US20140357805A1 (en) | 2011-09-13 | 2012-09-13 | Polyolefin Having Terminal Double Bond and Method of Producing the Same |
JP2013533710A JP6042340B2 (ja) | 2011-09-13 | 2012-09-13 | 末端二重結合含有ポリオレフィンとその製造方法 |
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EP2897944B1 (en) | 2012-09-21 | 2016-10-26 | Bristol-Myers Squibb Company | Substituted 1,5-benzodiazepinone compounds |
CN104822677A (zh) | 2012-09-21 | 2015-08-05 | 百时美施贵宝公司 | 氟烷基-1,4-苯并二氮杂*酮化合物 |
WO2019039731A1 (ko) * | 2017-08-23 | 2019-02-28 | 주식회사 라이온켐텍 | 폴리올레핀 공중합체의 제조방법 |
EP3902810A1 (en) * | 2018-12-28 | 2021-11-03 | Dow Global Technologies LLC | Curable compositions comprising telechelic polyolefins |
US20220204716A1 (en) * | 2018-12-28 | 2022-06-30 | Dow Global Technologies Llc | Curable compositions comprising unsaturated polyolefins |
BR112021012808A2 (pt) * | 2018-12-28 | 2021-11-03 | Dow Global Technologies Llc | Composição curável |
JP2022516115A (ja) * | 2018-12-28 | 2022-02-24 | ダウ グローバル テクノロジーズ エルエルシー | テレケリックポリオレフィンおよびこれを調製するための方法 |
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