CN114524974B - Nucleating agent composition for transparent polypropylene, application of nucleating agent composition and polypropylene composition - Google Patents
Nucleating agent composition for transparent polypropylene, application of nucleating agent composition and polypropylene composition Download PDFInfo
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- CN114524974B CN114524974B CN202111643700.9A CN202111643700A CN114524974B CN 114524974 B CN114524974 B CN 114524974B CN 202111643700 A CN202111643700 A CN 202111643700A CN 114524974 B CN114524974 B CN 114524974B
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- polypropylene
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- -1 polypropylene Polymers 0.000 title claims abstract description 81
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 62
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 62
- 239000000203 mixture Substances 0.000 title claims abstract description 49
- 239000002667 nucleating agent Substances 0.000 title claims abstract description 41
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 28
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 28
- 239000002253 acid Substances 0.000 claims abstract description 13
- 239000003607 modifier Substances 0.000 claims abstract description 12
- 239000002216 antistatic agent Substances 0.000 claims abstract description 11
- 239000002516 radical scavenger Substances 0.000 claims abstract description 9
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims abstract description 7
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 229920003023 plastic Polymers 0.000 claims abstract description 7
- 239000000600 sorbitol Substances 0.000 claims abstract description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 8
- 239000005977 Ethylene Substances 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- DKBCURTUXYMRFB-LXTVHRRPSA-N (2r,3r,4s,5r)-7-(3,4-dimethylphenyl)hept-6-ene-1,2,3,4,5,6-hexol Chemical compound CC1=CC=C(C=C(O)[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO)C=C1C DKBCURTUXYMRFB-LXTVHRRPSA-N 0.000 claims description 6
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 6
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 6
- 229960002920 sorbitol Drugs 0.000 claims description 6
- RSJKGSCJYJTIGS-UHFFFAOYSA-N undecane Chemical compound CCCCCCCCCCC RSJKGSCJYJTIGS-UHFFFAOYSA-N 0.000 claims description 6
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 5
- HGPXWXLYXNVULB-UHFFFAOYSA-M lithium stearate Chemical group [Li+].CCCCCCCCCCCCCCCCCC([O-])=O HGPXWXLYXNVULB-UHFFFAOYSA-M 0.000 claims description 5
- 229920005604 random copolymer Polymers 0.000 claims description 5
- ZAAQJFLUOUQAOG-UHFFFAOYSA-N 4-benzyl-2,6-ditert-butylphenol Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=CC=CC=2)=C1 ZAAQJFLUOUQAOG-UHFFFAOYSA-N 0.000 claims description 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 4
- 229960001545 hydrotalcite Drugs 0.000 claims description 4
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 4
- HOGQKPKMJVCDRN-UHFFFAOYSA-M lithium 2,2,3,3,4,4,5,5,6,6,7,7-dodecahydroxyoctadecanoate Chemical compound OC(C(C(C(C(C(C(=O)[O-])(O)O)(O)O)(O)O)(O)O)(O)O)(CCCCCCCCCCC)O.[Li+] HOGQKPKMJVCDRN-UHFFFAOYSA-M 0.000 claims description 4
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 4
- SBKRBXBQFDKYSO-UHFFFAOYSA-N (3-tert-butyl-4-hydroxy-5-methylphenyl) propanoate Chemical compound CCC(=O)OC1=CC(C)=C(O)C(C(C)(C)C)=C1 SBKRBXBQFDKYSO-UHFFFAOYSA-N 0.000 claims description 3
- VNQNXQYZMPJLQX-UHFFFAOYSA-N 1,3,5-tris[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-1,3,5-triazinane-2,4,6-trione Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CN2C(N(CC=3C=C(C(O)=C(C=3)C(C)(C)C)C(C)(C)C)C(=O)N(CC=3C=C(C(O)=C(C=3)C(C)(C)C)C(C)(C)C)C2=O)=O)=C1 VNQNXQYZMPJLQX-UHFFFAOYSA-N 0.000 claims description 3
- GXURZKWLMYOCDX-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)propane-1,3-diol;dihydroxyphosphanyl dihydrogen phosphite Chemical compound OP(O)OP(O)O.OCC(CO)(CO)CO GXURZKWLMYOCDX-UHFFFAOYSA-N 0.000 claims description 3
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 claims description 3
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 229940075507 glyceryl monostearate Drugs 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 claims description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000012462 polypropylene substrate Substances 0.000 claims description 3
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims 2
- RGASRBUYZODJTG-UHFFFAOYSA-N 1,1-bis(2,4-ditert-butylphenyl)-2,2-bis(hydroxymethyl)propane-1,3-diol dihydroxyphosphanyl dihydrogen phosphite Chemical compound OP(O)OP(O)O.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)C(O)(C(CO)(CO)CO)C1=C(C=C(C=C1)C(C)(C)C)C(C)(C)C RGASRBUYZODJTG-UHFFFAOYSA-N 0.000 claims 1
- 239000007983 Tris buffer Substances 0.000 claims 1
- 229920005629 polypropylene homopolymer Polymers 0.000 claims 1
- YWEWWNPYDDHZDI-JJKKTNRVSA-N (1r)-1-[(4r,4ar,8as)-2,6-bis(3,4-dimethylphenyl)-4,4a,8,8a-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl]ethane-1,2-diol Chemical compound C1=C(C)C(C)=CC=C1C1O[C@H]2[C@@H]([C@H](O)CO)OC(C=3C=C(C)C(C)=CC=3)O[C@H]2CO1 YWEWWNPYDDHZDI-JJKKTNRVSA-N 0.000 description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- AIBRSVLEQRWAEG-UHFFFAOYSA-N 3,9-bis(2,4-ditert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP1OCC2(COP(OC=3C(=CC(=CC=3)C(C)(C)C)C(C)(C)C)OC2)CO1 AIBRSVLEQRWAEG-UHFFFAOYSA-N 0.000 description 2
- PZRWFKGUFWPFID-UHFFFAOYSA-N 3,9-dioctadecoxy-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound C1OP(OCCCCCCCCCCCCCCCCCC)OCC21COP(OCCCCCCCCCCCCCCCCCC)OC2 PZRWFKGUFWPFID-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- AVOVSJYQRZMDQJ-KVVVOXFISA-M lithium;(z)-octadec-9-enoate Chemical compound [Li+].CCCCCCCC\C=C/CCCCCCCC([O-])=O AVOVSJYQRZMDQJ-KVVVOXFISA-M 0.000 description 2
- AZEPWULHRMVZQR-UHFFFAOYSA-M lithium;dodecanoate Chemical compound [Li+].CCCCCCCCCCCC([O-])=O AZEPWULHRMVZQR-UHFFFAOYSA-M 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000013329 compounding Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
-
- 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
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
-
- 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
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of plastics, and provides a nucleating agent composition for transparent polypropylene, application of the nucleating agent composition and a polypropylene composition. The nucleating agent composition comprises the following components in parts by weight based on 100 parts by weight of polypropylene: 0.001-0.2 part of main antioxidant, 0.001-0.2 part of auxiliary antioxidant, 0.01-0.3 part of acid scavenger, 0.15-0.5 part of sorbitol acetal nucleating agent, 0.05-0.5 part of transparent modifier and 0.03-0.2 part of antistatic agent. The nucleating agent composition for transparent polypropylene has wider processing window while maintaining high transparency of the polypropylene composition.
Description
Technical Field
The invention relates to the technical field of plastics, in particular to a nucleating agent composition for high-transparency polypropylene, application of the nucleating agent composition and a polypropylene composition.
Background
Polypropylene is an incompletely crystallized resin, and tends to form large-sized spherulites when homogeneously crystallized from a melt, and has low crystallinity. On the one hand, since the spherulites are larger than the wavelength of visible light, scattering or reflection of light may be caused, and on the other hand, the refractive index of the crystalline region and the non-crystalline region is different, so that the refraction phenomenon of light occurs, and all the phenomena directly cause the increase of haze of the product. It will be appreciated that improving the transparency of polypropylene articles can be accomplished by reducing the spherulitic size to a value less than the wavelength of visible light; increasing the crystallization density to enable the miniaturized spherulites to reach the mutual collision degree and reducing the amorphous area as much as possible; the addition of a nucleating agent is certainly an ideal method to meet the above requirements.
The 1,3:2, 4-di (3, 4-dimethylbenzylidene) -D-sorbitol (DMDBS) nucleating agent has the advantages of excellent heat stability, no smell, low precipitation and the like due to the unique principle, is widely applied, and can obviously improve the transparency of polypropylene and reduce the haze value by a small amount of addition, but the DMDBS transparent nucleating agent has high melting point and limited compatibility with polypropylene, so that a saturated concentration exists, the haze value cannot be reduced beyond the concentration, but can be increased, meanwhile, the anti-reflection effect is not ideal in a thick polypropylene product, and vacuum pores are easy to generate. Therefore, how to further promote the dispersion of DMDBS and further improve the anti-reflection effect of the DMDBS has very important significance.
Disclosure of Invention
In view of the above, a nucleating agent composition for transparent polypropylene, an application thereof and a polypropylene composition are provided, wherein the nucleating agent composition for transparent polypropylene remarkably promotes the dispersibility of 1,3:2, 4-di (3, 4-dimethylbenzylidene) -D-sorbitol (DMDBS) in polypropylene, improves the anti-reflection effect thereof, and improves the defect that vacuum pores are easy to generate.
A nucleating agent composition for transparent polypropylene, which comprises the following components in parts by weight, based on 100 parts by weight of polypropylene:
0.001-0.2 part of main antioxidant,
0.001-0.2 part of auxiliary antioxidant,
0.01 to 0.3 part of acid scavenger,
sorbitol acetal nucleating agent is 0.15-0.5 parts,
0.05 to 0.5 part of transparent modifier,
0.03-0.2 part of antistatic agent,
wherein the nucleating agent is 1,3:2, 4-di (3, 4-dimethylbenzylidene) -D-sorbitol.
Preferably, the polypropylene is selected to be a propylene-ethylene random copolymer, ethylene is copolymerized to the molecular main chain in the propylene polymerization process as a comonomer, and the ethylene content in the random copolymerized polypropylene is preferably 0.2-10 wt%.
Preferably, the weight portion of the main antioxidant is 0.01-0.2 portion, the weight portion of the auxiliary antioxidant is 0.01-0.2 portion, the weight portion of the sorbitol acetal nucleating agent is 0.1-0.4 portion, the weight portion of the transparent modifier is 0.1-0.5 portion, the weight portion of the acid scavenger is 0.05-0.2 portion, and the weight portion of the antistatic agent is 0.05-0.1 portion.
Preferably, the primary antioxidant is at least one of tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol, beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate orthostearyl ester, 3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, 1,3, 5-trimethyl-2, 4, 6- (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, [ ethylene glycol bis (3, 3-bis) (4-hydroxy-3-tert-butylphenyl)) butyrate ], triethylene glycol ether-bis (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate, 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid.
Preferably, the secondary antioxidant is at least one of tris [ 2.4-di-tert-butylphenyl ] phosphite (antioxidant 168), tetrakis (2, 4-di-tert-butylphenyl-4, 4' -biphenylene) bisphosphite (antioxidant P-EPQ), bis (2, 4-dicumyl) pentaerythritol diphosphite (antioxidant S9228), 3, 9-dioctadecyl-2, 4,8, 10-tetraoxy-3, 9-diphosphocyclic [5.5] undecane (antioxidant 618), bis (2, 4-di-tert-butylphenyl) pentaerythritol diphosphite (antioxidant 626).
Preferably, the acid scavenger is at least one of calcium stearate, zinc stearate, sodium stearate, zinc oxide and hydrotalcite.
Preferably, the transparent modifier is at least one of lithium stearate, lithium dodecahydroxystearate, lithium laurate and lithium oleate.
Preferably, the acid absorbent is at least one of calcium stearate, zinc stearate, sodium stearate, zinc oxide and hydrotalcite.
Preferably, the composition further comprises a lubricant, and the antistatic agent is at least one of glyceryl monostearate, polyethylene wax, polypropylene wax and ethylene bis-stearamide.
A polypropylene composition comprising 100 parts of a polypropylene substrate and an additive composition for a polyolefin as described above.
And the application of the nucleating agent composition for transparent polypropylene in plastic products.
The transparent polypropylene composition is modified by the nucleating agent composition, has excellent dispersibility and transparency, and low-temperature processing characteristics, and can be suitable for overcoming the defects that the current 1,3:2, 4-di (3, 4-dimethylbenzylidene) -D-sorbitol (DMDBS) modified polypropylene material is poor in dispersibility, the transparency of a thick product is obviously reduced, vacuum pores are easy to occur and the like. Therefore, the nucleating agent composition for transparent polypropylene maintains the high transparency of the polypropylene composition, has wider processing window, can be widely applied to various plastic products, and is particularly suitable for plastic products with higher transparency requirements and low haze value.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The nucleating agent composition for the high-transparency polypropylene provided by the embodiment of the invention comprises the following components in parts by weight, calculated by 100 parts by weight of polypropylene:
0.001-0.2 part of main antioxidant,
0.001-0.2 part of auxiliary antioxidant,
0.01 to 0.3 part of acid scavenger,
sorbitol acetal nucleating agent is 0.15-0.5 parts,
0.05 to 0.5 part of transparent modifier,
0.03-0.2 part of antistatic agent,
wherein the nucleating agent is 1,3:2, 4-di (3, 4-dimethylbenzylidene) -D-sorbitol.
Preferably, the primary antioxidant is at least one of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], n-stearyl-beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, 3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, 1,3, 5-trimethyl-2, 4, 6- (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, [ ethylene glycol bis (3, 3-bis) (4-hydroxy-3-tert-butylphenyl)) butyrate ], triethylene glycol ether-bis (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate, 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid. The auxiliary antioxidant is preferably at least one of tris [2, 4-di-tert-butylphenyl ] phosphite (antioxidant 168), tetrakis (2, 4-di-tert-butylphenyl-4, 4' -biphenylene) bisphosphite (antioxidant P-EPQ), bis (2, 4-dicumyl) pentaerythritol diphosphite (antioxidant S9228), 3, 9-dioctadecyl-2, 4,8, 10-tetraoxy-3, 9-diphosphocyclic [5, 5] undecane (antioxidant 618) and bis (2, 4-di-tert-butylphenyl) pentaerythritol diphosphite (antioxidant 626).
Preferably, the polypropylene is selected to be a propylene-ethylene random copolymer, ethylene is copolymerized to the molecular main chain in the propylene polymerization process as a comonomer, and the ethylene content in the random copolymerized polypropylene is preferably 0.2-10 wt%.
Preferably, the weight portion of the main antioxidant is 0.01-0.2 portion, the weight portion of the auxiliary antioxidant is 0.01-0.2 portion, the weight portion of the sorbitol acetal nucleating agent is 0.1-0.4 portion, the weight portion of the transparent modifier is 0.1-0.5 portion, the weight portion of the acid scavenger is 0.05-0.2 portion, and the weight portion of the antistatic agent is 0.05-0.1 portion. The transparent modifier is preferably at least one of lithium stearate, lithium laurate and lithium oleate. Preferably, the acid absorbent is at least one of calcium stearate, zinc stearate, sodium stearate, zinc oxide and hydrotalcite. Preferably, the composition further comprises a lubricant, and the antistatic agent is at least one of glyceryl monostearate, polyethylene wax, polypropylene wax and ethylene bis-stearamide.
In another aspect of the embodiments of the present invention, there is provided a polypropylene composition comprising 100 parts of a polypropylene substrate and an additive composition for polyolefin as described above. The polypropylene is selected as a propylene-ethylene random copolymer, ethylene is copolymerized onto a molecular main chain in the propylene polymerization process as a comonomer, the ethylene content in the random copolymerized polypropylene is preferably 0.2-10wt%, and the components and the content of the nucleating agent composition are as described above and are not described in detail herein.
The nucleating agent composition for transparent polypropylene is used for manufacturing thick injection molded products such as food packages, microwave oven lunch boxes, finishing boxes, medical syringes and the like. These thick plastic articles require better transparency.
The following examples illustrate the composition of the nucleating agent composition for transparent polypropylene described above, the method for preparing the same, and the performance thereof.
Examples
The polypropylene material is used as a base material, and the weight parts of the components are as follows:
polypropylene material: 100 parts of the total weight of the mixture,
0.001-0.2 part of main antioxidant,
0.001-0.2 part of auxiliary antioxidant,
0.01 to 0.3 part of acid scavenger,
0.15-0.5 part of nucleating agent DMDBS,
the transparent modifier is 0.05-0.5 part.
0.03-0.2 part of antistatic agent
During preparation, the components are added into a high-speed kneader, stirred and mixed for 5 minutes, discharged, mixed and granulated in a double-screw extruder, and extrusion granulation temperatures are respectively set to 190 ℃ and 230 ℃. And then, respectively carrying out injection molding standard sample bars at 190 ℃ and 230 ℃ on the polypropylene resin particles obtained by pelleting, and comparing haze values of the standard sample pieces obtained at different molding temperatures. The lower the haze value, the better the transparency.
Referring to table 1, table 1 lists a plurality of comparative examples and examples, and according to the above method, corresponding standard bars were prepared according to the compositions of each comparative example and example, and were tested, and the test results are shown in table 1.
Test method
Transparency test of injection molded sheet: the granulated polypropylene particles were injection molded into plaques of 1.0mm and 2.0mm thickness, and then the haze value of the plaques was measured,
and (5) carrying out temperature resistance test on the injection-molded tensile standard sample bar.
It can be seen from the comparative examples and comparative examples that lithium stearate, lithium dodecahydroxystearate, does not improve the haze value of polypropylene. 1,3:2, 4-bis (3, 4-dimethylbenzylidene) -D-sorbitol (DMDBS) can significantly reduce polypropylene haze, but extrusion and injection molding temperatures greatly affect the haze value of 1,3:2, 4-bis (3, 4-dimethylbenzylidene) -D-sorbitol (DMDBS), and the haze value is relatively low at high extrusion granulation temperature (230 ℃) or injection molding temperature (230 ℃) and low extrusion granulation temperature (190 ℃) and injection molding temperature (190 ℃) which can lead to higher haze and lower transparency. The example data shows that by compounding 1,3:2, 4-bis (3, 4-dimethylbenzylidene) -D-sorbitol (DMDBS) with the transparency modifier lithium stearate or lithium dodecahydroxystearate, lower haze values can be obtained, and better transparency can be achieved, whether by extrusion and injection molding at low temperatures of 190℃or at high temperatures of 230 ℃.
Claims (9)
1. A nucleating agent composition for transparent polypropylene, characterized in that the composition comprises the following components in parts by weight, based on 100 parts by weight of polypropylene:
0.001-0.2 part of main antioxidant,
0.001-0.2 part of auxiliary antioxidant,
0.01 to 0.3 part of acid scavenger,
sorbitol acetal nucleating agent is 0.15-0.5 parts,
0.05 to 0.5 part of transparent modifier,
0.03-0.2 part of antistatic agent,
wherein the nucleating agent is 1,3:2, 4-di (3, 4-dimethylbenzylidene) -D-sorbitol, and the transparent modifier is lithium stearate or lithium dodecahydroxystearate.
2. The nucleating agent composition for transparent polypropylene according to claim 1, wherein the polypropylene is one of homo-polypropylene and random copolymer polypropylene, and wherein the ethylene content in the random copolymer polypropylene is 0.2 to 5 parts by weight.
3. The additive composition for polypropylene according to claim 1, wherein the main antioxidant is 0.01 to 0.2 parts by weight, the auxiliary antioxidant is 0.01 to 0.2 parts by weight, the sorbitol acetal nucleating agent is 0.1 to 0.4 parts by weight, the transparency modifier is 0.1 to 0.5 parts by weight, the acid scavenger is 0.05 to 0.2 parts by weight, and the antistatic agent is 0.05 to 0.1 parts by weight.
4. The nucleating agent composition for transparent polypropylene according to claim 1, wherein the primary antioxidant is at least one of pentaerythritol tetrakis [ β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], n-stearyl- β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate, 3, 5-trimethyl-2, 4, 6-tris (3, 5-di-t-butyl-4-hydroxybenzyl) benzene, 1,3, 5-trimethyl-2, 4, 6- (3, 5-di-t-butyl-4-hydroxybenzyl) benzene, [ ethylene bis (3, 3-bis) (4-hydroxy-3-t-butylphenyl)) butyrate ], triethylene glycol ether-bis (3-t-butyl-4-hydroxy-5-methylphenyl) propionate, 1,3, 5-tris (3, 5-di-t-butyl-4-hydroxybenzyl) isocyanuric acid.
5. The nucleating agent composition for transparent polypropylene according to claim 1, wherein the auxiliary antioxidant is at least one of tris [ 2.4-di-t-butylphenyl ] phosphite, tetrakis (2, 4-di-t-butylphenyl-4, 4' -biphenylene) bisphosphite, bis (2, 4-dicumyl) pentaerythritol diphosphite, 3, 9-dioctadecyl-2, 4,8, 10-tetraoxy-3, 9-diphosphocyclic [5.5] undecane, bis (2, 4-di-t-butylphenyl) pentaerythritol diphosphite.
6. The nucleating composition for transparent polypropylene according to claim 1, further comprising an acid absorber, wherein the acid absorber is at least one of calcium stearate, zinc stearate, sodium stearate, zinc oxide, hydrotalcite.
7. The nucleating agent composition for transparent polypropylene according to claim 1, wherein the composition further comprises a lubricant, and the antistatic agent is at least one of glyceryl monostearate, polyethylene wax, polypropylene wax, and ethylene bis-stearamide.
8. A polypropylene composition comprising 100 parts of the polypropylene substrate and the nucleating agent composition for transparent polypropylene as defined in any one of claims 1 to 7.
9. Use of the nucleating agent composition for transparent polypropylene as defined in any one of claims 1 to 7 in plastic articles.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102408626A (en) * | 2010-09-25 | 2012-04-11 | 中国石油化工股份有限公司 | Polypropylene anti-reflection nucleating agent and preparation method thereof |
| CN112538215A (en) * | 2019-09-20 | 2021-03-23 | 茂名骐锋新材料有限公司 | Impact-resistant low-temperature-resistant high-transparency polypropylene composition |
| CN112898681A (en) * | 2021-01-25 | 2021-06-04 | 湖北新南化科技有限公司 | Polypropylene composition, process for producing the same and use thereof |
| WO2021193886A1 (en) * | 2020-03-27 | 2021-09-30 | 株式会社Adeka | Nucleating agent, resin composition, method for producing resin composition, and molded article |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408626A (en) * | 2010-09-25 | 2012-04-11 | 中国石油化工股份有限公司 | Polypropylene anti-reflection nucleating agent and preparation method thereof |
| CN112538215A (en) * | 2019-09-20 | 2021-03-23 | 茂名骐锋新材料有限公司 | Impact-resistant low-temperature-resistant high-transparency polypropylene composition |
| WO2021193886A1 (en) * | 2020-03-27 | 2021-09-30 | 株式会社Adeka | Nucleating agent, resin composition, method for producing resin composition, and molded article |
| CN112898681A (en) * | 2021-01-25 | 2021-06-04 | 湖北新南化科技有限公司 | Polypropylene composition, process for producing the same and use thereof |
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