CN106189039A - Block copolymer composition - Google Patents

Block copolymer composition Download PDF

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CN106189039A
CN106189039A CN201510318697.1A CN201510318697A CN106189039A CN 106189039 A CN106189039 A CN 106189039A CN 201510318697 A CN201510318697 A CN 201510318697A CN 106189039 A CN106189039 A CN 106189039A
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block copolymer
weight
carbon
constituent
formula
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CN106189039B (en
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谢官霖
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Chi Mei Corp
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Chi Mei Corp
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Abstract

The invention provides a block copolymer composition, which comprises a block copolymer (A) and a compound (B). The block copolymer (A) comprises at least one vinyl aromatic polymer block and at least one conjugated diene polymer block. The compound (B) is at least one selected from the group consisting of a phosphate represented by the formula (1) and a derivative thereof, a phosphite represented by the formula (2) and a derivative thereof, and a compound having 6 to 9 carbon atoms and not being presentA fatty acid terminated with a C4-staged alkyl group, a derivative thereof, or a combination thereof,in the formulae (1) and (2), R1、R2、R3And R4Each independently is an alkyl group having 4 to 10 carbon atoms or a phenyl group. Thereby maintaining the transparency of the block copolymer composition and not generating fuming and odor during extrusion.

Description

Block copolymer constituent
Technical field
The present invention relates to a kind of block copolymer constituent, particularly relate to one and can maintain transparency and in signature The block copolymer constituent of be fuming phenomenon and stink will not be produced when going out.
Background technology
Conjugated diene/vinyl aromatic block copolymer resin is that a kind of heat being widely used is plastic Property fluoropolymer resin.Due to the transparency of conjugated diene/vinyl aromatic block copolymer resin and resistance to Impact strength is good, so being commonly used in the article molding such as container for drink, clothes hanger, toy.This kind of copolymerization The existing many patents of resin are mentioned, as special in TaiWan, China patent announcement number 574231 patent or TaiWan, China Profit notification number I300069 patent.
In the preparation process of above-mentioned block copolymer resin, it is common that by vinyl aromatic monomers, altogether The raw materials such as yoke diene monomer, initiator and solvent sequentially add reaction in reactive tank.Then, wait until After polyreaction all terminates, add the terminator of the activity terminating polymer chain.But, existing the moon Ionic polymerization terminator (VAC) does not meets European Union EU NO 10/2011 (Food Contact container method), the most urgently Other compounds need to be sought, European Union EU NO 10/2011 can be met, will not need to produce when extrusion simultaneously Phenomenon of being fuming and stink.
Summary of the invention
The present invention provides a kind of block copolymer constituent, can maintain the transparency of block copolymer constituent, And be fuming phenomenon and stink will not be produced when extrusion.
A kind of block copolymer constituent of the present invention, including block copolymer (A) and compound (B). Described block copolymer (A) includes at least one vinyl aromatic polymers block and at least one conjugation two Alkene based polymer block, and above-claimed cpd (B) be at least one selected from include the phosphate ester shown in formula (1) and Phosphite ester and derivant thereof shown in derivant, formula (2), there is carbon number 6 to 9 and end is 4 grades of carbon The fatty acid of alkyl and derivant, or a combination thereof,
In formula (1) and formula (2), R1、R2、R3With R4Each stand alone as the alkyl or phenyl of carbon number 4 to 10.
In one embodiment of this invention, above-mentioned constituent is 100 weight with block copolymer constituent Part, the content range of above-claimed cpd (B) is between 10ppm~3000ppm.
In one embodiment of this invention, above-mentioned constituent is 100 weight with block copolymer constituent Part, the content range of above-claimed cpd (B) is between 10ppm~2500ppm.
In one embodiment of this invention, above-mentioned R1With R2Identical.
In one embodiment of this invention, above-mentioned R3With R4Identical.
In one embodiment of this invention, the phosphate ester shown in above-mentioned formula (1) is dioctylphosphoric acid ester.
In one embodiment of this invention, the phosphite ester shown in above-mentioned formula (2) is diphenyl phosphite.
In one embodiment of this invention, above-mentioned have carbon number 6 to 9 and alkyl that end is 4 grades of carbon Fatty acid is to have a carbon number 6 to 9 and end is the fat that 4 grades of carbon, main chain have the alkyl of 3 grades of carbon structures Fat acid.
In one embodiment of this invention, above-mentioned have a carbon number 6 to 9 and end is 4 grades of carbon, main chain tool The fatty acid having the alkyl of 3 grades of carbon structures is 3,5,5 Trimethylhexanoic acid.
In one embodiment of this invention, above-mentioned block copolymer (A) contains vinyl aromatic monomers unit 25 weight % are to 80 weight %, and conjugated diene monomeric unit 20 weight % is to 75 weight %.
In one embodiment of this invention, the weight average molecular weight of above-mentioned block copolymer (A) is 110,000 To 170,000.
Based on above-mentioned, the block copolymer constituent that the present invention provides comprises the compound of ad hoc structure (B), use this compound (B) in the article shaped of making block copolymer constituent, can maintain block altogether The transparency of polymers constituent, and be fuming phenomenon and stink will not be produced when extrusion.
For the features described above of the present invention and advantage can be become apparent, special embodiment below, make in detail It is described as follows.
Detailed description of the invention
Hereinafter, will be described in embodiments of the invention.But, these embodiments are exemplary, and this Disclosure of the invention is not limited to this.
In one embodiment of this invention, block copolymer constituent includes block copolymer (A) and chemical combination Thing (B).Described block copolymer (A) and described compound (B) will be described below.
Block copolymer (A)
The block copolymer (A) of the present invention includes at least one vinyl aromatic polymers block and at least One conjugated diene polymer block.Described block copolymer (A) is preferably containing vinyl aromatic monomers Unit 25 weight % to 80 weight % and conjugated diene monomeric unit 20 weight % to 75 weight %, It is more preferably containing vinyl aromatic monomers unit 27 weight % to 78 weight % and conjugated diene monomer Unit 22 weight %, to 73 weight %, most preferably contains vinyl aromatic monomers unit 30 weight % extremely 75 weight % and conjugated diene monomeric unit 25 weight % are to 70 weight %.Above-mentioned vinyl aromatic Race's monomeric unit and conjugated diene monomeric unit refer to the vinyl aromatic (co) being polymerized in block copolymer (A) Fragrant race monomer and the construction unit being conjugated diene monomer.When vinyl aromatic monomers unit content is 25 Weight % to 80 weight % and conjugated diene monomer unit content in 20 weight % to 75 weight % models When enclosing interior, the physical property balance such as the low temperature impact intensity of block copolymer (A), transparency and folding resistance is good.
The molecular structure of the block copolymer (A) of the present invention is preferably linear molecular structure, and this is to block altogether Good effect is had in the physical property balances such as the mobility of polymers (A) and folding resistance.
The molecular structure of the block copolymer (A) of the present invention such as molecular structure for containing disagree (branch), It is beneficial to melt strength and the extrusion outward appearance of block copolymer (A).Additionally, the block copolymer of the present invention (A), preferably without vinyl aromatic monomers and the alternation block (Tapered being conjugated diene monomer Block) person, is beneficial to the physical property such as softening point and low temperature impact intensity balance.
Above-mentioned vinyl aromatic monomers concrete the most such as: styrene (styrene is called for short SM), ortho-methyl Styrene (o-methyl styrene), p-methylstyrene (p-methyl styrene), p-t-butyl styrene (p-tert-butyl styrene), 1,3-dibutyl styrene (1,3-di-butyl styrene), α-methyl styrene (α-methyl styrene), ethyl styrene, 2,4-dimethyl styrene, Alpha-Methyl-p-methylstyrene, Bromo-styrene, is preferable with styrene the most again.Above-mentioned vinyl aromatic monomers can be used alone one Or mix several uses.
Above-mentioned conjugated diene monomer concrete the most such as: 1,3-butadiene (1,3-butadiene, be called for short BD), 2-methyl isophthalic acid, 3-butadiene, 2,3-is double-methyl isophthalic acid, 3-butadiene, 1,3-pentadiene, 1,3-hexadiene etc., its In again with 1,3-butadiene or 2-methyl isophthalic acid, 3-butadiene is preferable.Above-mentioned conjugated diene monomer can be independent Use one or mix several uses.
The weight average molecular weight of block copolymer of the present invention (A) is preferably 11 ten thousand to 17 ten thousand, is more preferably 11.5 ten thousand to 16.5 ten thousand, most preferably 12 ten thousand to 16.1 ten thousand.
Compound (B)
The compound (B) of the present invention be at least one selected from include the phosphate ester shown in following formula (1) and derivant thereof, Phosphite ester shown in following formula (2) and derivant thereof, there is carbon number 6 to 9 and alkyl that end is 4 grades of carbon Fatty acid and derivant, or a combination thereof.
Formula (1) is as follows:
In formula (1), R1With R2Each stand alone as the alkyl or phenyl of carbon number 4 to 10.
Above-mentioned R1With R2The most independent concrete the most such as: butyl, amyl group, hexyl, heptyl, octyl group, Nonyl, decyl or phenyl;Preferably octyl group.
R in formula (1)1And R2Can be identical or different;Preferably R1And R2Identical.
The dioctylphosphoric acid ester (Dioctyl phosphate) represented by the following structural formula of concrete example of formula (1)
Formula (2) is as follows:
In formula (2), R3With R4Each stand alone as the alkyl or phenyl of carbon number 4 to 10.
Above-mentioned R3With R4The most independent concrete the most such as: butyl, amyl group, hexyl, heptyl, octyl group, Nonyl, decyl or phenyl.Preferably phenyl.
R in formula (2)3With R4Can be identical or different;Preferably R3With R4Identical.
Diphenyl phosphite (the Diphenyl represented by the following structural formula of concrete example of formula (2) phosphonate)
The concrete example of the above-mentioned fatty acid with carbon number 6 to 9 and alkyl that end is 4 grades of carbon is such as: 2,3,3- Trimethyl butanoic acid (2,3,3-trimethylbutanoic acid), 3,4,4-trimethyl valeric acid (3,4,4-trimethylpentanoic acid), 2,4,4-trimethyl valeric acid (2,4,4-trimethylpentanoic Acid), 2-ethyl-2,3,3-trimethyl butanoic acid (2-ethyl-2,3,3-trimethylbutanoic acid), 3,5,5- Tri-methyl hexanoic acid (3,5,5-trimethylhexanoic acid), 2,2,4,4-tetramethyl valeric acid (2,2,4,4-tetramethylpentanoic acid), 4,4-dimethyl valeric acid (4,4-dimethylpentanoic Acid), 5,5-dimethylhexanoic acid (5,5-dimethylhexanoic acid), 6,6-dimethyl enanthic acid (6,6-dimethylheptanoic acid) etc..It is 4 grades of carbon, masters to have carbon number 6 to 9 and end the most again It is preferable that chain has the fatty acid of the alkyl of 3 grades of carbon structures.
In one embodiment, above-mentioned have a carbon number 6 to 9 and end is that 4 grades of carbon, main chain have 3 grades of carbon The fatty acid of the alkyl of structure, 3 represented by following structural formula, 5,5-tri-methyl hexanoic acids (3,5,5-trimethylhexanoic acid)
Derivant in above-claimed cpd (B) refers to the phosphite ester shown in the phosphate ester shown in formula (1), formula (2) Or there is the hydrion in the fatty acid of carbon number 6 to 9 and alkyl that end is 4 grades of carbon by alkali metal ion After replacement, the salt formed.The concrete example of derivant such as, the hydrogen in above-mentioned 3,5,5-tri-methyl hexanoic acids After ion is replaced by lithium ion, 3 formed, 5,5-tri-methyl hexanoic acid lithiums.
Above-claimed cpd (B) can be used alone one or mix several use.
In the block copolymer constituent of the present invention, it is 100 weight with above-mentioned block copolymer constituent Part, the content range of compound (B) is preferably between 10ppm~3000ppm;Be more preferably 10ppm~ Between 2500ppm;Between most preferably 15ppm~2200ppm.When the content of above-claimed cpd (B) exists Time in the range of 10ppm~3000ppm, there is preferably polymerization effect, obtained block copolymerization The excellent transparency of thing constituent, and be fuming phenomenon and stink will not be produced when extrusion.
The preparation of block copolymer constituent
The preparation method of the block copolymer constituent of the present invention includes, first carries out the poly-of block copolymer (A) Close reaction, then add the compound (B) of the present invention, after removing solvent seasoning, can be prepared by this Bright block copolymer constituent.More specifically, in the block copolymer constituent of the present invention, block is total to The polyreaction of polymers (A) is dissolved in solvent by monomer and carries out polyreaction, then adds the change of the present invention Compound (B), forms polymer cement afterwards in solvent, and above-mentioned rubber cement usually contains 10 weight %~35 The solid content of weight %, aforementioned rubber cement can be further concentrated to 50 weight %~99 in advance in modes such as decompression or heating The solid content of weight %, then with vacuum drying oven, remove the extruder that volatilizees, or import in hot water to remove residue Solvent, can be prepared by the block copolymer constituent of the present invention.
When carrying out polyreaction, it is by vinyl aromatic monomers, conjugated diene monomer, initiator And the raw material such as solvent, sequentially add in reactive tank and react.After the reaction completely of each stage monomer, Carry out the reaction monomers pan feeding of next stage again.The most whether reaction to be, can judge according to reaction temperature, when Reaction temperature stops representing reaction when rising completely.Polymerization temperature in the polymerization such as exists Between-40 DEG C~150 DEG C, preferably 40~120 DEG C;Polymerization time and polymerization pressure are then with polymerizing condition not Different together, wherein, polymerization time was typically in 20 hours, preferably 0.1~10 hour, was more preferably 0.5~5 hour.Additionally, being mixed into of impurity need to be prevented, such as when polymerization: water, acids, titanium dioxide Carbon etc..
By the time, after polyreaction all terminates, the compound in block copolymer constituent of the present invention is added (B)。
Initiator (C)
In the block copolymer constituent of the present invention, block copolymer (A), in time carrying out polyreaction, is made Initiator (C) include, for example organic alkali metal compound, its formula can represent with RM, wherein R represents the alkyl of carbon number 1 to 20, cycloalkyl, aryl, preferably alkyl;And M represents alkali metal, Such as lithium, sodium etc., preferably lithium.The consumption of above-mentioned initiator (C) depends on required each block or block copolymer (A) molecular weight determines, typically with respect to 0.01~1.0 weight portions of 100 weight parts monomers.
In aforementioned organic alkali metal compound, organo-lithium compound concrete the most such as: n-pro-pyl lithium, positive fourth Base lithium (being called for short n-BuLi), s-butyl lithium, tert-butyl lithium, n-pentyl lithium, hexyllithium, benzyl lithium (benzyl Lithium), phenyl lithium, tolyl lithium (tolyl lithium), trimethylene two lithium, tetramethylene two lithium, The double lithium of butadiene and the double lithiums of isoprene etc., be wherein preferable with n-BuLi.Additionally, above-mentioned initiator (C) one that can be used alone or mix several use.
Solvent (D)
In the block copolymer constituent of the present invention, block copolymer (A), in time carrying out polyreaction, is made Solvent (D) include, for example: pentane, hexane, octane, hexamethylene etc., wherein with hexamethylene for relatively Good.Above-mentioned solvent (D) can be used alone one or mix several use.
Polar compound (E)
Block copolymer (A) in the block copolymer constituent of the present invention polymerization time rate of polymerization, 1,2-contents of ethylene, can be adjusted by polar compound (E).Described polar compound (E) include, for example: Ethers, amine (amine), thioether class, phosphine (phosphine) or phosphono amine, the potassium of trialkylphosphine oxide or Sodium salt.Be suitable for the present invention concrete the most such as:
(a) ethers: dimethyl ether, Anaesthetie Ether, dibutyl ethers, diphenyl ether, oxolane (tetrahydrofuran is called for short THF), Pentamethylene oxide., diethylene glycol dimethyl ether (diethylglycol Dimethyl ester), ethylene glycol bisthioglycolate butyl ether, diethylene glycol diethyl ether, dibutyl ethylene glycol ether, hexichol Ether etc..
(b) amine: tertiary amine, Trimethylamine, triethylamine, tripropylamine, tri-butylamine, four-methyl -ethylidine diamine, diethylaniline, pyridine, ring tertiary amine etc..
(c) phosphine or phosphono amine: three-Phenylphosphine, hexylmethylphosphoramide etc..
The potassium of (d) trialkylphosphine oxide or sodium salt: fourth oxygen potassium (potassium butoxide).
In the most several concrete examples, preferable with oxolane.Additionally, polar compound (E) can be used alone A kind of or mix several and use.
The addition of above-mentioned polar compound (E) is relative to the vinyl aromatic monomers and altogether of 100 weight portions The total amount of yoke diene monomer, preferably 0.005~10 weight portions, more preferably 0.03~1 weight portion, most preferably It it is 0.06~0.6 weight portion.
Additive (F)
The block copolymer constituent of the present invention can add suitable additive (F), such as: antioxidant, Chelating agen, lubrication prescription, antistatic additive, weather resisting agent etc..
Wherein, antioxidant can use such as phenol system antioxidant, thioether system antioxidant or phosphorus system antioxidation Agent.
The addition of phenol system antioxidant with 0.005~2.0 weight portions (relative to block copolymer 100 weight Part) be preferably, phenol system antioxidant the most such as: octadecyl (3,5-dual-tert-butyl-4-hydroxyphenyl) -propionic ester, triethylene glycol double [3-(the 3-tert-butyl group-5-methyl-4-hydroxyphenyl) propionic ester], four [methylene base-3- (3,5-dual-tert-butyl-4-hydroxyphenyl) propionic ester] methane, the 2-tert-butyl group-6-(the 3-tert-butyl group-2-hydroxyl-6-first Base benzyl)-4-aminomethyl phenyl acrylate, 2,2'-methylene base-bis-(4-methyl-6-tert butyl phenol), 2,2'- Sulfur double (4-methyl-6-tert butyl phenol), 2,6-di-t-butyl-4-sylvan, 2,2'-sulfur generation-diethyl support group- Double [3-(3,5-dual-tert-butyl-4-hydroxyphenyl) propionic esters], 2,2'-oxalamide-bis-[ethyl-3-(3,5-pair- The tert-butyl group-4-hydroxyphenyl) propionic ester] etc., wherein with octadecyl (3,5-dual-tert-butyl-4-hydroxyphenyl)- Propionic ester is preferable.
The addition of thioether system antioxidant with 0.005~2.0 weight portions (relative to block copolymer 100 weight Amount part) be preferred, thioether system antioxidant concrete the most such as: distearyl thiodipropionic acid ester, two palmityls Thiodipropionic acid ester, five erithritol-four-(β-ten dimethyl-sulfur propionic esters), double octadecyl thioether, 2,4- Double (n-octyl group sulfidomethyl)-6-sylvan [2,4-bis (n-octyl thio methyl)-6-methyl phenol], Double (2', 3'-bis--hydroxypropyl sulfidomethyl)-3,6-dimethyl phenol (2,4-bis (2', the 3'-di-hydroxy of 2,4- Propylthio methyl)-3,6-di-methyl phenol), 2,4-double (2'-Acetoxvethyl sulfidomethyl) -3,6-two-sylvan (2,4-bis (2'-acetyloxy ethyl thio methyl)-3,6-di-methyl phenol), 4,6-double (octyl group sulfidomethyl)-o-cresol [4,6-bis (octyl thio methyl)-0-cresol] etc., wherein It is preferable with double (octyl group the sulfidomethyl)-o-cresol of 4,6-.
Phosphorous antioxidant is phosphite ester system antioxidant or phosphate ester system antioxidant, its addition with 0.015~2.0 weight portions (relative to block copolymer 100 weight portion) are preferably, phosphorous antioxidant The most such as: three (nonyl phenyl) phosphite ester, dodecyl phosphite ester, ring-type neopentane tetrahydrochysene Double (octadecyl phosphite ester), 4,4' butylidene bis (the 3-methyl-6-tert butyl phenyl-bis-13 of naphthyl Alkyl phosphite), three (2,4-tert-butyl-phenyl) phosphite ester, four (2,4-tert-butyl-phenyl)-4,4'- Stretch biphenyl phosphate, 9,10-dihydro-9-oxy-10-phosphoric acid phenanthrene-10-oxygen support etc..
The addition of chelating agen with 0.001~2.0 weight portions (relative to block copolymer 100 weight portion) is Preferably, the most such as: dibenzoyl methane, the sodium salt etc. of editic acid.
The addition of lubrication prescription is preferable with 0.03~5.0 weight portions (relative to block copolymer 100 weight portion), Concrete the most such as: the metallic soaps of calcium stearate, magnesium stearate, lithium stearate etc., ethylene distearyl amide, Methylene distearyl amide, palmitamide, butyl stearate, stearic acid Petiolus Trachycarpi ester, poly-propanoic acid alcohol three are hard The compound of fat acid ester, behenic acid, stearic acid etc., Tissuemat E, octocosoic acid wax, bar Western palm wax (Carnauba wax), pertroleum wax etc..
It is exemplified below all the effect tested in order to verify the present invention, but the scope of the present invention is not limited to Hereinafter test.Following instance is more fully described the present invention.
Experimental example 1~11
The raw material used has:
1. vinyl aromatic monomers is styrene (being called for short SM).
2. conjugated diene monomer is 1,3-butadiene (being called for short BD).
3. initiator (C) be concentration be the n-BuLi (be called for short n-BuLi) of 8 weight %.
4. polar compound (E) is oxolane (being called for short THF).
5. compound (B) has (1) dioctylphosphoric acid ester, (2) diphenyl phosphite, (3) 3,5,5-trimethyl own respectively Acid.
6. solvent (D) uses thiacyclohexane.
First, in the presence of nitrogen, being polymerized in batch reactor, wherein reaction pressure is about 1Kg/cm2~3Kg/cm2, reaction temperature is 50 DEG C~120 DEG C, about 60 minutes~150 minutes response time. Reactor volume is 160 liters, and solvent (D) uses thiacyclohexane, and charge order and raw material weight are according to table 1 Shown in.After more than having reacted, add the compound (B) shown in table 1.
After having reacted, rubber cement, containing about the solid of 25 weight %, is passed through hot water by rubber cement afterwards that obtain Middle desolvation, reclaims and obtains wet micelle again with extruder extrusion drying and dehydrating, embedding with the prepared present invention Section copolymer constituent compares.
Method of testing
1. assay:
Take the block copolymer constituent of 1 gram with acetone solution after, be subsequently added into methanol, make high molecular Polymer aggregational sedimentation, take upper liquid and to have the gas chromatograph of flame ionization detector (FID) (GC) (Hewlett Packard company manufactures;Model 6890, tubing string is HP-5) carry out quantitative analysis.
2. termination measure of merit:
After block copolymer constituent is with extruder extrusion pelletize, obtains particle and carry out hot-forming, terminate Not exclusively person's test piece is easily turned to be yellow.Result is shown in table 1.
Zero: test piece is without jaundice.
: test piece is turned to be yellow.
3. extrusion smokiness test:
Its smokiness of extrusion process observation in aforementioned termination measure of merit.Result is shown in table 1.
Zero: without being fuming phenomenon.
: there is phenomenon of being fuming.
4. extrusion stink test:
Its stink of extrusion process observation in aforementioned termination measure of merit.Result is shown in table 1.
Zero: odorless.
: frowziness.
Comparative example 1~11
Compound except being added after having reacted changes (1) lauric acid (Lauric acid), (2) tricresyl phosphate fourth into Ester (tributyl phosphate), (3) 3-mercaptan propanoic acid (3-mercapto propionic acid), (4) trimethyl are own Alcohol (3,5,5-Trimethyl-1-hexanol), uses and the identical raw material of experimental example 1~11, weight and charging Sequentially, table 2 is asked for an interview.
Then obtain with above-mentioned method of testing the block copolymer constituent of comparative example 1~11 termination effect, Extrusion smokiness and the test result of extrusion stink, be shown in table 2.
Table 1
Table 1 (Continued)
Table 2
Table 2 (Continued)
Knowable to the result of Tables 1 and 2, the termination effect of the block copolymer constituent of the present invention is good, So test piece is without jaundice, the transparency of block copolymer constituent can be maintained.And, the block of the present invention Copolymer constituent also will not produce be fuming phenomenon and stink when extrusion.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, rather than right It limits;Although the present invention being described in detail with reference to foregoing embodiments, this area common Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be modified by it, Or the most some or all of technical characteristic is carried out equivalent;And these amendments or replacement, and The essence not making appropriate technical solution departs from the scope of various embodiments of the present invention technical scheme.

Claims (11)

1. a block copolymer constituent, it is characterised in that including:
Block copolymer (A), including at least one vinyl aromatic polymers block and at least one conjugation two Alkene based polymer block;And
Compound (B), is at least one selected from including shown in the phosphate ester shown in formula (1) and derivant thereof, formula (2) Phosphite ester and derivant thereof, have carbon number 6 to 9 and the fatty acid of alkyl that end is 4 grades of carbon and Its derivant, or a combination thereof,
In formula (1) and formula (2), R1、R2、R3With R4Each stand alone as the alkyl or phenyl of carbon number 4 to 10.
Block copolymer constituent the most according to claim 1, it is characterised in that with described block Copolymer constituent is 100 weight portions, and the content range of described compound (B) is 10ppm~3000ppm Between.
Block copolymer constituent the most according to claim 1, it is characterised in that with described block Copolymer constituent is 100 weight portions, and the content range of described compound (B) is 10ppm~2500ppm Between.
Block copolymer constituent the most according to claim 1, it is characterised in that R1With R2Phase With.
Block copolymer constituent the most according to claim 1, it is characterised in that R3With R4Phase With.
Block copolymer constituent the most according to claim 1, it is characterised in that described formula (1) Shown phosphate ester is dioctylphosphoric acid ester.
Block copolymer constituent the most according to claim 1, it is characterised in that described formula (2) Shown phosphite ester is diphenyl phosphite.
Block copolymer constituent the most according to claim 1, it is characterised in that described in there is carbon Several 6 to 9 and alkyl that end is 4 grades of carbon fatty acid for there is carbon number 6 to 9 and end be 4 grades of carbon, Main chain has the fatty acid of the alkyl of 3 grades of carbon structures.
Block copolymer constituent the most according to claim 8, it is characterised in that described in there is carbon Several 6 to 9 and fatty acid that end is the alkyl that 4 grades of carbon, main chain have 3 grades of carbon structures be 3,5,5-front three Base caproic acid.
Block copolymer constituent the most according to claim 1, it is characterised in that described block Copolymer (A) containing vinyl aromatic monomers unit 25 weight % to 80 weight %, and conjugated diene It is that monomeric unit 20 weight % is to 75 weight %.
11. block copolymer constituents according to claim 1, it is characterised in that described block The weight average molecular weight of copolymer (A) is 11 ten thousand to 17 ten thousand.
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