CN108384286A - A kind of preparation method of PVC stabilizer modified zeolite - Google Patents
A kind of preparation method of PVC stabilizer modified zeolite Download PDFInfo
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- CN108384286A CN108384286A CN201810297958.XA CN201810297958A CN108384286A CN 108384286 A CN108384286 A CN 108384286A CN 201810297958 A CN201810297958 A CN 201810297958A CN 108384286 A CN108384286 A CN 108384286A
- Authority
- CN
- China
- Prior art keywords
- perchloric acid
- zeolites
- preparation
- modified zeolite
- temperature
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000006077 pvc stabilizer Substances 0.000 title claims abstract description 7
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000010457 zeolite Substances 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 8
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 26
- 230000003712 anti-aging effect Effects 0.000 abstract description 6
- 238000012986 modification Methods 0.000 abstract description 5
- 230000004048 modification Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 4
- 235000013539 calcium stearate Nutrition 0.000 description 4
- 239000008116 calcium stearate Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- OEIWPNWSDYFMIL-UHFFFAOYSA-N dioctyl benzene-1,4-dicarboxylate Chemical group CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C=C1 OEIWPNWSDYFMIL-UHFFFAOYSA-N 0.000 description 4
- BJAJDJDODCWPNS-UHFFFAOYSA-N dotp Chemical compound O=C1N2CCOC2=NC2=C1SC=C2 BJAJDJDODCWPNS-UHFFFAOYSA-N 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- ZRGUXTGDSGGHLR-UHFFFAOYSA-K aluminum;triperchlorate Chemical compound [Al+3].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O ZRGUXTGDSGGHLR-UHFFFAOYSA-K 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 description 2
- 229910001488 sodium perchlorate Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000037230 mobility Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/40—Compounds of aluminium
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing 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
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of preparation method of PVC stabilizer modified zeolite, this method is that perchloric acid is slowly equably sprayed onto to 4A zeolite surfaces, and stirring while adding, and perchloric acid is reacted with 4A zeolites is made modified zeolite.Modification 4A zeolites are applied in PVC material processing can significantly increase its anti-aging and thermal stability on the basis of not influencing other comprehensive performances such as PVC material anti-flammability.Compared with untreated zeolite, the zeolite after perchloric acid modification, which is added in PVC material, makes its comprehensive performance be remarkably reinforced.
Description
Technical field：
The invention belongs to chemical technology fields, are related to a kind of preparation method of PVC stabilizer modified zeolite.
Background technology：
4A zeolites are a kind of chemical substance, molecular formula Na12Al12Si12O48·27H2O, network-like structure include
Even aperture, aperture 0.42nm, specific surface area are about 600m2/R, and not soluble in water and organic solvent can be dissolved in highly basic and strong acid.
When being heated beyond 800 DEG C, the structure to form cristobalite shape is recrystallized.Typically a kind of nontoxic, odorless, tasteless and mobility compared with
Good white powder, is ideal adsorbent and drier.It is commonly used for the auxiliary agent of non-phosphate detergent, instead of sodium tripolyphosphate；
Oil and other industry are used as drying, the dewatered clean etc. of gas and liquid, also serve as catalyst and water softener.In PVC material
Middle main function is the hydrogen chloride for absorbing PVC degradations and releasing.At present when carrying out PVC material processing, need to be added anti-aging
The reduction that antiager sometimes results in other performances is added to enhance its anti-aging property in agent in PVC material.
Invention content
The present invention overcomes above-mentioned shortcoming, does modification for 4A zeolites currently on the market, it is made to keep
On the basis of original flame retardant property can also Reinforced PVC material anti-aging and thermal stability, when PVC material is processed be not necessarily to volume
It is outer that anti-aging auxiliary material is added.
The purpose of the present invention is what is be accomplished by the following way：
A kind of preparation method of PVC stabilizer modified zeolite, this approach includes the following steps：A small amount of perchloric acid is slow
4A zeolite surfaces are equably sprayed onto, and stirring while adding, perchloric acid is reacted with 4A zeolites.
The weight ratio of above-mentioned perchloric acid and 4A zeolites is 1：5-20.It is preferred that the weight ratio of perchloric acid and 4A zeolites is 1：
10.The above-mentioned reaction time is preferably 0.5-1h.Reaction temperature is not higher than 50 DEG C.Mixing speed in above-mentioned reaction process
For 30rpm-50rpm.
A method of PVC stabilizer modified zeolite, this method packet are carried out using the reaction kettle with sieve ribbon agitator
Include following steps：
1) perchloric acid is added in the pressurized tank A with cooling system, controls temperature in A tanks and be less than 20 DEG C, pressurizes into A tanks
It is set to keep 3kg pressure；
2) 4A zeolites are added in the reaction kettle B with sieve ribbon agitator, open stirring, mixing speed is controlled in 30rpm-
Between 50rpm；
3) A tank outlet valves are opened, perchloric acid is equably sprayed onto on the 4A zeolites in B reaction kettles by nozzle, are stirred
For speed control between 30rpm-50rpm, the temperature of control reaction kettle B is less than 50 DEG C, is reduced when temperature in the kettle is more than 50 DEG C
The cooling system that mixing speed opens reaction kettle B simultaneously makes its temperature be less than 50 DEG C；
4) after perchloric acid is sprayed, continue stirring 20-40 minutes；The weight ratio of perchloric acid and 4A zeolites is 1：5-
20。
The present invention is that a certain amount of perchloric acid is slowly equably sprayed onto 4A zeolite surfaces, and chemical reaction is generated with 4A zeolites
A small amount of sodium perchlorate and aluminum perchlorate are generated, a small amount of sodium perchlorate and aluminum perchlorate are adsorbed on zeolite surface and generate modified effect
Fruit, modification 4A zeolites, which are applied in PVC material processing, not to influence other comprehensive performances such as PVC material anti-flammability
On the basis of significantly increase its anti-aging and thermal stability.Compared with untreated zeolite, the zeolite after perchloric acid modification
Being added in PVC material makes its comprehensive performance be remarkably reinforced.
Specific implementation mode
Explanation is further expalined to the present invention below by way of specific embodiment：
Embodiment 1
1. being added to 10kg perchloric acid in the pressurized tank A with cooling system, controls temperature in A tanks and be less than 20 DEG C, into A tanks
Pressurization makes it keep 3kg pressure；
2. being added to 100kg4A zeolites in the reaction kettle B with sieve ribbon agitator, stirring is opened, mixing speed control exists
Between 30rpm-50rpm, sieve ribbon blender can generate three-dimensional hybrid effect, no dead angle；
3. opening A tank outlet valves, perchloric acid is equably sprayed onto on the 4A zeolites in B reaction kettles by No. 3 nozzles, is controlled
Mixing speed processed is between 30rpm-50rpm, the temperature (being less than 50 DEG C) of control reaction kettle B, when temperature in the kettle is more than 50 DEG C
The cooling system that reduction mixing speed opens reaction kettle B simultaneously makes its temperature be less than 50 DEG C；After perchloric acid is sprayed, continue
Stirring 20 minutes；About 50 minutes reaction time.
Application Example 1
It is formulated A：PVC S-65 (degree of polymerization 1000~1100) 100 parts by weight, 50 weights of DOTP (dioctyl terephthalate)
Part, 0.4 parts by weight of zinc stearate, 0.4 parts by weight of calcium stearate, common 0.6 parts by weight of 4A zeolites are measured, are added to high speed according to the ratio
Mixing machine is stirred, mixing speed 1200rpm, waits being warming up to 100 DEG C, and material is put to cold mixer, mixing speed 200rpm,
Logical cooling water to material is cooled to 50 DEG C or less.
It is formulated B：PVC S-65 (degree of polymerization 1000~1100) 100 parts by weight, 50 weights of DOTP (dioctyl terephthalate)
Part, 0.4 parts by weight of zinc stearate, 0.4 parts by weight of calcium stearate, modified 0.6 parts by weight of 4A zeolites are measured (according to 1 method of embodiment
It is modified), it is added to high-speed mixer according to the ratio and is stirred, mixing speed 1200rpm waits being warming up to 100 DEG C, by material
It puts to cold mixer, mixing speed 200rpm, logical cooling water to material is cooled to 50 DEG C or less.
Formula A and formula B material are processed film-making, condition using laboratory two-roll mill respectively：Preceding roll temperature
175 DEG C, rotating speed 20rpm, 170 DEG C, rotating speed 18rpm of rear roll temperature, roller spacing 0.4mm.Manufactured print is tested for the property.
Test result finds that the comprehensive performance of formula B material is apparently higher than formula A materials.
Embodiment 2
1. being added to 10kg perchloric acid in the pressurized tank A with cooling system, controls temperature in A tanks and be less than 20 DEG C, add to A tanks
Pressure makes it keep 3kg pressure；
2. being added to 150kg4A zeolites in the reaction kettle B with sieve ribbon agitator, stirring is opened, mixing speed control exists
Between 30rpm-50rpm, sieve ribbon blender can generate three-dimensional hybrid effect, no dead angle；
3. opening A tank outlet valves, perchloric acid is equably sprayed onto on the zeolite in B reaction kettles by No. 3 nozzles, is controlled
Between 30rpm-50rpm, the temperature (being less than 50 DEG C) of control reaction kettle B drops mixing speed when temperature in the kettle is more than 50 DEG C
The cooling system that low mixing speed opens reaction kettle B simultaneously makes its temperature be less than 50 DEG C；After perchloric acid is sprayed, continue to stir
It mixes 20 minutes；About 1 hour reaction time.
Application Example 2
It is formulated A：120 parts by weight of PVC S-65,50 parts by weight of DOTP (dioctyl terephthalate), 0.3 weight of zinc stearate
Part, 0.3 parts by weight of calcium stearate, common 0.8 parts by weight of 4A zeolites are measured, high-speed mixer is added to according to the ratio and is stirred, stir
Speed 1200rpm is mixed, waits being warming up to 100 DEG C, material is put to cold mixer, mixing speed 200rpm, it is cold to material to lead to cooling water
But to 50 DEG C or less.
It is formulated B：120 parts by weight of PVC S-65,50 parts by weight of DOTP (dioctyl terephthalate), 0.3 weight of zinc stearate
Part, 0.3 parts by weight of calcium stearate, modified 0.8 parts by weight (being modified according to 2 method of embodiment) of 4A zeolites are measured, are added according to the ratio
It adds high-speed mixer to be stirred, mixing speed 1200rpm, waits being warming up to 100 DEG C, material is put to cold mixer, stirring speed
200rpm is spent, logical cooling water to material is cooled to 50 DEG C or less.
Formula A and formula B material are processed film-making, condition using laboratory two-roll mill respectively：Preceding roll temperature
175 DEG C, rotating speed 20rpm, 170 DEG C, rotating speed 18rpm of rear roll temperature, roller spacing 0.4mm.Manufactured print is tested for the property.
Test result finds that the comprehensive performance of formula B material is apparently higher than formula A materials.
Claims (7)
1. a kind of preparation method of PVC stabilizer modified zeolite, it is characterised in that perchloric acid is slowly equably sprayed onto 4A
Zeolite surface, and it is stirring while adding, perchloric acid is reacted with 4A zeolites.
2. the preparation method of modified zeolite according to claim 1, it is characterised in that the perchloric acid and 4A zeolites
Weight ratio is 1：5-20.
3. the preparation method of modified zeolite according to claim 2, it is characterised in that the perchloric acid and 4A zeolites
Weight ratio is 1：10.
4. the preparation method of modified zeolite according to claim 1, it is characterised in that the reaction time is 0.5-1h.
5. the preparation method of modified zeolite according to claim 1, it is characterised in that the reaction temperature be not higher than
50℃。
6. the preparation method of modified zeolite according to claim 1, it is characterised in that the mixing speed is 30rpm-
50rpm。
7. a kind of method being modified zeolite using the reaction kettle with sieve ribbon agitator, it is characterised in that this method include with
Lower step：
1) perchloric acid is added in the pressurized tank with cooling system, controls temperature in tank and be less than 20 DEG C, pressurizeing into tank makes its guarantor
Hold 3kg pressure；
2) 4A zeolites are added in the reaction kettle with sieve ribbon agitator, open stirring, mixing speed is controlled in 30rpm-50rpm
Between；
3) perchloric acid is equably sprayed onto in the reaction kettle with sieve ribbon agitator by Opening pressure tank outlet valve by nozzle
On 4A zeolites, control mixing speed is between 30rpm-50rpm, and the temperature for controlling reaction kettle is less than 50 DEG C, when temperature in the kettle is big
When 50 DEG C reduce mixing speed simultaneously open reaction kettle cooling system make its temperature be less than 50 DEG C；
4) after perchloric acid is sprayed, continue stirring 20-40 minutes；The weight ratio of perchloric acid and 4A zeolites is 1：5-20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810297958.XA CN108384286A (en) | 2018-04-04 | 2018-04-04 | A kind of preparation method of PVC stabilizer modified zeolite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810297958.XA CN108384286A (en) | 2018-04-04 | 2018-04-04 | A kind of preparation method of PVC stabilizer modified zeolite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108384286A true CN108384286A (en) | 2018-08-10 |
Family
ID=63073314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810297958.XA Pending CN108384286A (en) | 2018-04-04 | 2018-04-04 | A kind of preparation method of PVC stabilizer modified zeolite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108384286A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000026650A (en) * | 1998-07-08 | 2000-01-25 | Kyodo Chem Co Ltd | Polyvinyl chlorid resin stabilizer and polyvinyl chloride resin based composition |
| WO2002092686A1 (en) * | 2001-05-17 | 2002-11-21 | Reagens S.P.A. | Pvc stabilisers |
| CN1894332A (en) * | 2003-12-17 | 2007-01-10 | 贝洛赫尔有限公司 | Stabilisatorenzusammensetzung fur halogenierte polymere |
-
2018
- 2018-04-04 CN CN201810297958.XA patent/CN108384286A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000026650A (en) * | 1998-07-08 | 2000-01-25 | Kyodo Chem Co Ltd | Polyvinyl chlorid resin stabilizer and polyvinyl chloride resin based composition |
| WO2002092686A1 (en) * | 2001-05-17 | 2002-11-21 | Reagens S.P.A. | Pvc stabilisers |
| CN1894332A (en) * | 2003-12-17 | 2007-01-10 | 贝洛赫尔有限公司 | Stabilisatorenzusammensetzung fur halogenierte polymere |
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Application publication date: 20180810 |