CN110698775A - Food-grade high-filling polyisobutylene carrier barium sulfate master batch and preparation method thereof - Google Patents
Food-grade high-filling polyisobutylene carrier barium sulfate master batch and preparation method thereof Download PDFInfo
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- CN110698775A CN110698775A CN201911162204.4A CN201911162204A CN110698775A CN 110698775 A CN110698775 A CN 110698775A CN 201911162204 A CN201911162204 A CN 201911162204A CN 110698775 A CN110698775 A CN 110698775A
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- polyisobutylene
- barium sulfate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08J2423/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08J2423/22—Copolymers of isobutene; butyl rubber
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Abstract
The invention discloses food-grade high-filling polyisobutylene carrier barium sulfate master batch and a preparation method thereof, wherein nontoxic polyisobutylene is used as carrier resin, and meanwhile, the polyisobutylene has good thermal stability and basically has no degradation in the processing process of 140-200 ℃. Furthermore, the degradation of the polyisobutene is mainly the reduction of molecular weight, no other substances are generated, and the polyisobutene can be stably used in food engineering.
Description
Technical Field
The invention relates to the field of chemical industry, and particularly relates to food-grade high-filling polyisobutylene carrier barium sulfate master batch and a preparation method thereof.
Background
The existing barium sulfate master batches are all subjected to filling modification on polyolefin materials, a coupling agent with low toxicity is added in the preparation process, and meanwhile, the barium sulfate master batches are heated to a higher temperature in the preparation process so as to melt carrier resin, but the resin and other additives are inevitably subjected to thermal degradation to a certain extent to generate toxic and harmful substances, so that the barium sulfate master batches are not suitable for being used as raw materials in the aspects of food packaging and daily chemical products; for example: toothpaste additive, facial cleanser additive, water-based and oil-based canned or bottled sealing foaming glue, and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and the invention uses non-toxic polyisobutylene as carrier resin, and meanwhile, the polyisobutylene has good thermal stability and basically has no degradation in the processing process of 140-200 ℃. Furthermore, the degradation of the polyisobutene is mainly a reduction in molecular weight, no other substances are produced and the polyisobutene can be stably used in food engineering. Considering that polyisobutylene with a higher molecular weight is a high viscosity liquid at room temperature, mechanical shearing may occur when mechanical processing is performed at room temperature, causing molecular chain scission, resulting in a decrease in molecular weight, and the viscosity of PIB may be reduced. Considering that the lower viscosity is beneficial to the processing and use of the subsequent master batch and can greatly reduce the energy consumption in the production process, the invention adopts the room temperature extrusion granulation process.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a food grade high-filling polyisobutylene carrier barium sulfate master batch comprises 90-94% of food grade precipitated barium sulfate and 6-10% of polyisobutylene.
In a further improvement, the 6-10% polyisobutylene comprises 3-5% polyisobutylene with a molecular weight below 5000; 3-5% of polyisobutylene with molecular weight of 20000-50000.
In a further improvement, the composition comprises 93% of food grade precipitated barium sulfate, 3% of polyisobutylene with molecular weight of 2000 and 4% of polyisobutylene with molecular weight of 30000.
A preparation method of food-grade high-filling polyisobutylene carrier barium sulfate master batch comprises the following steps:
step one, adding 90-94 parts by weight of food-grade precipitated barium sulfate into a high-speed mixer, heating to 70-80 ℃,
step two, pouring 3-5 parts by weight of polyisobutylene with the molecular weight below 5000 into a high-speed mixer and heating to 90 ℃;
step three, adding 3-5 parts by weight of high molecular weight polyisobutylene cut into strips, and continuously mixing for 15 minutes; the molecular weight of the high molecular weight polyisobutylene is 20000-50000; after being mixed evenly, the mixture is added into a double-screw extruder at room temperature for extrusion and granulation.
In a further improvement, 93 parts by weight of food-grade precipitated barium sulfate is added in the first step; adding 3 parts by weight of polyisobutylene with molecular weight of 2000 in the second step; 4 parts by weight of high molecular weight polyisobutylene was added in step three.
The invention has the advantages that:
1. barium sulfate is a widely used metal salt, can be used for modified filling of coatings, paints and plastic products, and can be used for medical contrast agents due to the non-toxicity. The invention prepares the nontoxic barium sulfate master batch by using the non-toxicity of barium sulfate, adding the same nontoxic polyisobutylene and not adding other toxic additives, and is used for the related fields of food.
2. The invention uses nontoxic polyisobutene as carrier resin, and the polyisobutene has good thermal stability and basically has no degradation in the processing process at the temperature of 140-.
3. The degradation of polyisobutene is mainly a molecular weight reduction, no other substances are produced, and the polyisobutene can be stably used in food engineering.
4. Polyisobutylene with higher molecular weight is high-viscosity liquid at room temperature, and can be mechanically sheared to break molecular chains when being mechanically processed at room temperature, so that the molecular weight is reduced, and the viscosity of PIB can be reduced.
5. The low viscosity of the polyisobutene is beneficial to the processing and use of subsequent master batches, and simultaneously, the energy consumption in the production process can be greatly reduced.
Detailed Description
Example 1:
adding barium sulfate into a high-speed mixer, heating to 80 ℃, pouring low-molecular-weight polyisobutylene, mixing for 10 minutes, adding high-molecular-weight polyisobutylene cut into strips, and continuously mixing for 10 minutes. After being mixed evenly, the mixture is added into a double-screw extruder at room temperature for extrusion and granulation. The weight percentage of the added substances is as follows: 95% of precipitated barium sulfate, 3% of polyisobutene (molecular weight of 3500) and 2% of polyisobutene (molecular weight of 25000).
Example 2:
adding barium sulfate into a high-speed mixer, heating to 80 ℃, pouring low-molecular-weight polyisobutylene, mixing for 12 minutes, heating to 100 ℃, adding high-molecular-weight polyisobutylene cut into strips, and continuously mixing for 12 minutes. After being mixed evenly, the mixture is added into a double-screw extruder at room temperature for extrusion and granulation. The weight percentage of the added substances is as follows: precipitated barium sulfate 90%, polyisobutylene (molecular weight 2500) 5%, polyisobutylene (molecular weight 40000) 5%.
Example 3:
adding barium sulfate into a high-speed mixer, heating to 70 ℃, pouring low-molecular-weight polyisobutylene, mixing for 10 minutes, heating to 90 ℃, adding high-molecular-weight polyisobutylene cut into strips, and continuously mixing for 15 minutes. After being mixed evenly, the mixture is added into a double-screw extruder at room temperature for extrusion and granulation. The weight of the added substances is as follows: 93kg of precipitated barium sulfate, 3kg of polyisobutene (molecular weight 2000) and 4kg of polyisobutene (molecular weight 30000).
The invention uses nontoxic polyisobutene as carrier resin, and the polyisobutene has good thermal stability and basically has no degradation in the processing process at the temperature of 140-. Furthermore, the degradation of the polyisobutene is mainly a reduction in molecular weight, no other substances are produced and the polyisobutene can be stably used in food engineering. The invention can provide safe and nontoxic raw materials for food packaging and daily chemical products, and a raw material production process and a formula.
The above examples are merely preferred examples and are not intended to limit the embodiments of the present invention.
Claims (5)
1. The food-grade high-filling polyisobutylene carrier barium sulfate master batch is characterized by comprising 90-94% of food-grade precipitated barium sulfate and 6-10% of polyisobutylene.
2. The food-grade high-filling polyisobutylene carrier barium sulfate masterbatch of claim 1 wherein the 6-10% polyisobutylene comprises 3-5% polyisobutylene with a molecular weight below 5000; 3-5% of polyisobutylene with molecular weight of 20000-50000.
3. The food grade high-filled polyisobutylene carrier barium sulfate masterbatch of claim 2 comprising 93% food grade precipitated barium sulfate, 3% polyisobutylene with molecular weight 2000 and 4% polyisobutylene with molecular weight 30000.
4. A preparation method of food-grade high-filling polyisobutylene carrier barium sulfate master batch is characterized by comprising the following steps:
step one, adding 90-94 parts by weight of food-grade precipitated barium sulfate into a high-speed mixer, heating to 70-80 ℃,
step two, pouring 3-5 parts by weight of polyisobutylene with the molecular weight below 5000 into a high-speed mixer and heating to 90 ℃;
step three, adding 3-5 parts by weight of high molecular weight polyisobutylene cut into strips, and continuously mixing for 15 minutes; the molecular weight of the high molecular weight polyisobutylene is 20000-50000; after being mixed evenly, the mixture is added into a double-screw extruder at room temperature for extrusion and granulation.
5. The method for preparing the food-grade high-filling polyisobutylene carrier barium sulfate masterbatch according to claim 4, wherein 93 parts by weight of food-grade precipitated barium sulfate is added in the first step; adding 3 parts by weight of polyisobutylene with molecular weight of 2000 in the second step; 4 parts by weight of high molecular weight polyisobutylene was added in step three.
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| CN201911162204.4A CN110698775A (en) | 2019-11-22 | 2019-11-22 | Food-grade high-filling polyisobutylene carrier barium sulfate master batch and preparation method thereof |
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| CN201911162204.4A CN110698775A (en) | 2019-11-22 | 2019-11-22 | Food-grade high-filling polyisobutylene carrier barium sulfate master batch and preparation method thereof |
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Citations (8)
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|---|---|---|---|---|
| CN102070833A (en) * | 2010-12-27 | 2011-05-25 | 金发科技股份有限公司 | Filler masterbatch used for increasing polarity of polypropylene and preparation method thereof |
| CN102504394A (en) * | 2011-11-16 | 2012-06-20 | 和昌（广西）化工有限公司 | Production method of filled masterbatch formed through plasticization |
| CN103709949A (en) * | 2013-12-04 | 2014-04-09 | 绵阳市振华科技有限公司 | High and low temperature type anti-corrosion viscoelastic body filler, and preparation method thereof |
| CN104231417A (en) * | 2014-10-10 | 2014-12-24 | 湖北恒旭新材料科技股份有限公司 | Polyolefin barium sulfate transparent masterbatch and preparation method thereof |
| CN104497406A (en) * | 2014-12-05 | 2015-04-08 | 成都菲斯特化工有限公司 | Filling master batch for transparent film and preparation method of filling master batch |
| CN105440723A (en) * | 2015-12-27 | 2016-03-30 | 湖北恒旭新材料科技股份有限公司 | Preparation method of carrier-free precipitated barium sulfate transparent master batch |
| CN108003442A (en) * | 2016-11-01 | 2018-05-08 | 湖北省瀑源化工有限责任公司 | A kind of new process for processing method of the transparent master batch of polyolefin barium sulfate |
| CN109370039A (en) * | 2018-10-15 | 2019-02-22 | 佛山市南海区承欣塑料助剂有限公司 | A kind of thickening master batch and preparation method thereof |
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2019
- 2019-11-22 CN CN201911162204.4A patent/CN110698775A/en active Pending
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| CN102070833A (en) * | 2010-12-27 | 2011-05-25 | 金发科技股份有限公司 | Filler masterbatch used for increasing polarity of polypropylene and preparation method thereof |
| CN102504394A (en) * | 2011-11-16 | 2012-06-20 | 和昌（广西）化工有限公司 | Production method of filled masterbatch formed through plasticization |
| CN103709949A (en) * | 2013-12-04 | 2014-04-09 | 绵阳市振华科技有限公司 | High and low temperature type anti-corrosion viscoelastic body filler, and preparation method thereof |
| CN104231417A (en) * | 2014-10-10 | 2014-12-24 | 湖北恒旭新材料科技股份有限公司 | Polyolefin barium sulfate transparent masterbatch and preparation method thereof |
| CN104497406A (en) * | 2014-12-05 | 2015-04-08 | 成都菲斯特化工有限公司 | Filling master batch for transparent film and preparation method of filling master batch |
| CN105440723A (en) * | 2015-12-27 | 2016-03-30 | 湖北恒旭新材料科技股份有限公司 | Preparation method of carrier-free precipitated barium sulfate transparent master batch |
| CN108003442A (en) * | 2016-11-01 | 2018-05-08 | 湖北省瀑源化工有限责任公司 | A kind of new process for processing method of the transparent master batch of polyolefin barium sulfate |
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