CN105602109A - Antistatic agent for biaxially oriented polypropylene films in extremely-cold areas and preparation method of antistatic agent - Google Patents
Antistatic agent for biaxially oriented polypropylene films in extremely-cold areas and preparation method of antistatic agent Download PDFInfo
- Publication number
- CN105602109A CN105602109A CN201610035947.5A CN201610035947A CN105602109A CN 105602109 A CN105602109 A CN 105602109A CN 201610035947 A CN201610035947 A CN 201610035947A CN 105602109 A CN105602109 A CN 105602109A
- Authority
- CN
- China
- Prior art keywords
- antistatic additive
- antistatic
- weight
- preparation
- antistatic agent
- Prior art date
- 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.)
- Granted
Links
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
-
- 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
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
-
- 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
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/55—Boron-containing 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
- C08L2201/04—Antistatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of additives for biaxially oriented polypropylene film processing, in particular to an antistatic agent for biaxially oriented polypropylene films in extremely-cold areas and a preparation method of the antistatic agent. The antistatic agent mainly comprises ethoxylation octadecylamine, amides, coco, N, N-bis(hydroxyethyl), monoglyceride, alkyl borate alcohol amine ester, antioxidant and PP, wherein the weight percentage of the monoglyceride is 8-12%, the weight percentage sum of the ethoxylation octadecylamine, the amides, coco, N, N-bis(hydroxyethyl) and the alkyl borate alcohol amine ester is 8-12%, the weight percentage of the antioxidant is 0.3%, and the weight percentage of the PP is 79.7%. The antistatic agent has the advantages that the antistatic agent can be used in the northeastern extremely-cold areas and is evident in antistatic effect and good in technical effect, and the antistatic technical difficulties in the production and application of the biaxially oriented polypropylene films in the northeastern areas are solved.
Description
Technical field
The present invention relates to a kind of severe cold areas bidirectional stretching polypropylene film antistatic additive andManufacture method, belongs to bidirectional stretching polypropylene film processing additives technical field.
Background technology
Biaxially oriented polypropylene (BOPP) film has light weight, nontoxic, odorless, protection against the tide, machineThe advantages such as tool intensity is high, and good stability of the dimension, printing performance are good, the transparency is good, extensively shouldFor the packaging field of food, candy, cigarette, tealeaves, fruit juice, milk, textile etc.,There is the laudatory title of " packaging queen ". Wide, the pollution of BOPP film application low and to forestThe protection of natural resources, becomes more welcome than paper and polyvinyl chloride (PVC)Packaging material; Simple and easy reliable, the reasonable price of manufacturing process makes again it become to compare biaxial stretching polyester(BOPET) packing timber that film and biaxial tension nylon (BOPA) film more generally usesMaterial. But due to polypropylene low pole, water imbibition is poor, there are very forceful electric power insulating properties, makeBOPP film easily accumulates a large amount of electric charges and produces static in production and use procedure, gives rawProduct brings potential safety hazard, simultaneously packaging and bag process in because of Electrostatic Absorption processing difficulties,In a large amount of Electrostatic Absorption air, dust affects attractive packages. So conventionally add in process of productionAntistatic additive is eliminated article of manufacture and is produced static. Antistatic additive have ionic anti-static agent and non-fromSubtype antistatic additive. Ionic anti-static agent, because easily making polypropylene articles accelerated ageing, turns to be yellow,Embrittlement is not adopted by BOPP film industry, and BOPP film industry generally adopts interpolation nonionicAntistatic additive.
The non-ionic antistatic agent mechanism of action is that the interior doping in BOPP film moves toFilm surface, wherein hydrophobic group is planted in acrylic resin inside, and hydrophilic group is outside, absorbs emptyMoisture content in gas, forms water membrane, and moisture film has conductor feature, thereby BOPP film is reachedTo antistatic effect. Be uniformly dispersed in BOPP film in order to reach antistatic additive, at present industryInterior open report is by fatty amine and monoglyceride and certain proportion polypropylene material mixture, melt extrudesMake antistatic additive masterbatch, add in process of production antistatic additive masterbatch. Anti-quiet in order to strengthenElectricity effect, majority changes ethoxylated fatty amine into fatty amine. This type of antistatic additive performance effectThere are two necessary conditions, one: the migration of antistatic additive, the 2nd, the humidity of air. Experiment showsWhen environment temperature during lower than 20 DEG C ethoxylated fatty amine lose activity, do not move or moveVery slow, monoglyceride environment temperature lower than 15 DEG C time migration very slow. When ambient humidity is lower than 50%,By ethoxylated fatty amine and monoglyceride poor effect, BOPP goods do not reach antistatic effect.Existing 12 the BOPP production lines of northeast severe cold areas at present, production capacity surpasses 500,000 tons. But easternThe high and cold weather in north has restricted the development of BOPP, one to winter workshop temperature 15 DEG C of left and right,Humidity is in 25% left and right. A lot of products all can not be produced, and 500,000 tons of production capacity less thaies far away are seriousRestrict the development of company.
Summary of the invention
The object of the present invention is to provide a kind of biaxial tension that is specially adapted for severe cold areas to gatherAntistatic additive and manufacture method thereof for propylene film.
Technical scheme of the present invention is as follows: a kind of severe cold areas bidirectional stretching polypropylene film is with anti-Electrostatic agent, comprises following raw material: modifier, and monoglyceride, antioxidant and polypropylene, describedModifier is by ethoxylation octadecylamine, N, N-bis-(hydroxyethyl) coconut oleoyl amine and alkaneYlboronic acid alkanolamine ester is composite to be obtained.
Better, the percentage by weight of described modifier is 8%-12%; The weight hundred of monoglycerideProportion by subtraction is 8%-12%; The percentage by weight of antioxidant is 0.3%; Polyacrylic percentage by weightBe 79.7%; Further, ethoxylation octadecylamine is by octadecylamine and oxiraneAddition obtains.
Better, the percentage by weight of described monoglyceride is 8%; The weight hundred of described modifierProportion by subtraction sum is 12%; The percentage by weight of described antioxidant is 0.3%; Described polyacrylic heavyAmount percentage is 79.7%.
Described antioxidant is the raw material of this area routine, and any all can reach the effect of invention,The present invention does not specify it, and such as irgasfos 168, (chemical name is three (the tertiary fourths of 2,4-bis-Base) phenyl-phosphite), (chemical name is four [β-(3,5-di-t-butyls to antioxidant 1010-4-hydroxy phenyl) propionic acid] pentaerythritol ester), the preferred irgasfos 168 of the present invention.
The present invention asks to protect the preparation method of described antistatic additive simultaneously, and the method comprises as followsStep:
(1) by octadecylamine, N, N-bis-(hydroxyethyl) coconut oleoyl amine and alkylboronic acids hydramineEster and reacting ethylene oxide obtain modifier;
(2) modifier and monoglyceride, antioxidant, polypropylene are mixed and obtain compound;
(3) compound is joined in extruder, melting is extruded, and makes antistatic master batch;
(4) antistatic master batch cool drying, the pelletizing of step (3) being made, pack and obtain anti-quietElectricity agent.
Further, described reaction is octadecylamine and oxirane generation addition reaction.
Further, described reaction is octadecylamine, N, N-bis-(hydroxyethyl) coconut palmTo carry out addition anti-with oxirane after high-speed mixer and mixing for oleamide and alkylboronic acids alkanolamine esterShould.
Described octadecylamine, N, N-bis-(hydroxyethyl) coconut oleoyl amine and boron alkyl acid alcoholThe ratio of weight and number of amine ester is 9:1:2.
Further, extruder is the high moment of torsion corotating twin-screw of high rotating speed mixing extruder,Extrusion condition is 210～250 DEG C of extrusion temperatures, pressure 5.5～6Mpa, and rotating speed 500～700rpm,Draw ratio 40:1～50:1.
In addition, for preventing that in production process, blanking is inhomogeneous, cause antistatic additive dense of productionDegree fluctuation, after the antistatic master batch after pelletizing can being mixed by the gross again, pack againTo antistatic additive.
Beneficial effect of the present invention is as follows:
(1) severe cold areas bidirectional stretching polypropylene film antistatic additive provided by the invention, can beNortheast severe cold areas use and antistatic effect are obvious, have good technique effect,Solve the antistatic skill in the Northeast's bidirectional stretching polypropylene film production and useAn art difficult problem;
(2) severe cold areas bidirectional stretching polypropylene film antistatic additive provided by the invention, is addingWhile adding active ingredient 2500-3000ppm concentration, three days sheet resistances of product are less than 1012Ω；
(3) severe cold areas bidirectional stretching polypropylene film antistatic additive provided by the invention, manufacturesMethod is simple, and production cost is low, and strong adaptability is convenient to promote the use of.
Detailed description of the invention
Below by embodiment, the present invention is described in detail, but limits this never in any formBright. In following embodiment, if no special instructions, the test method adopting is conventional method,Material therefor, reagent, instrument Deng Junkecong biological or chemical company buy. Polypropylene: DalianPetrochemical industry T36F.
Embodiment 1
The preparation of modifier
By 75 kilograms of octadecylamines, N, N-bis-(hydroxyethyl) coconut oleoyl amine 8.3 thousandGram, 16.7 kilograms of boric acid alkyl alcoholamine esters join high mixer to be mixed and adds reactor to pass into ring12.5 kilograms of addition reactions of oxidative ethane obtain modifier.
Embodiment 2
The preparation of antistatic additive AT1
(1) percetage by weight is respectively to 12%, 8%, 0.3%, 79.7% modifier, listSweet ester, three (2,4-di-t-butyl) phenyl-phosphite, polypropylene mix and obtain compound;
(2) compound is added to the high moment of torsion corotating twin-screw of the high rotating speed of THJ-mixing extrusionMachine melting is extruded, and makes antistatic master batch, 210 DEG C of extrusion temperatures, pressure 6Mpa, rotating speed500rpm, screw diameter 75mm, draw ratio 40:1;
(3) antistatic master batch cool drying, the pelletizing of step (2) being made;
(4) the antistatic master batch cyclic drying after pelletizing being mixed to pack obtains antistaticAgent AT1.
Embodiment 3
The preparation of antistatic additive AT2
(1) percetage by weight is respectively to 8%, 12%, 0.3%, 79.7% modifier, listSweet ester, three (2,4-di-t-butyl) phenyl-phosphite, polypropylene mix and obtain compound;
(2) compound is added to the high moment of torsion corotating twin-screw of the high rotating speed of THJ-mixing extrusionMachine melting is extruded, and makes antistatic master batch, 210 DEG C of extrusion temperatures, pressure 6Mpa, rotating speed500rpm, screw diameter 75mm, draw ratio 40:1;
(3) antistatic master batch cool drying, the pelletizing of step (2) being made;
(4) the antistatic master batch cyclic drying after pelletizing being mixed to pack obtains antistaticAgent AT2.
Embodiment 4
The preparation of antistatic additive AT3
The preparation method of antistatic additive AT3 is identical with embodiment 2,3, and difference is only to usePreparation method's difference of modifier, the preparation method of the present embodiment modifier is specially: by tenEight 75 kilograms of alkylamines carry out addition reaction with 12.5 kilograms, oxirane and obtain ethoxylation tenAfter eight alkylamines, then with N, 8.3 kilograms of N-bis-(hydroxyethyl) coconut oleoyl amines, boric acid16.7 kilograms of alkyl alcoholamine esters join together high mixer and mix reaction and obtain modifier.
Comparative example
The antistatic additive AT1 preparing with embodiment 2 respectively, antistatic additive prepared by embodiment 3AT2 and Zhejiang factory conventional antistatic additive used is that raw material is prepared 20 μ bag films, anti-quietThe addition of electricity agent is 2500ppm; Slipping agent addition 500ppm.
The bag film that raw material with different antistatic additive is produced detects, and result is as table 1:
Table 1
As can be seen from Table 1, a kind of severe cold areas bidirectional stretching polypropylene film of the present inventionCompare traditional bidirectional stretching polypropylene film antistatic additive at severe cold areas tool with antistatic additiveThere are migration rate and antistatic behaviour faster. In low temperature and low humidity environment (temperature: 15-20 DEG C;Humidity: 28%-30%) three days can reach use standard. Solve the Northeast's biaxial tension poly-An antistatic technology difficult problem in propylene film production and use.
Above the specific embodiment of the invention is explained in detail, but the present invention is not limited toAbove-mentioned embodiment, in the ken possessing those skilled in the art, can also be notUnder the prerequisite of disengaging the present invention design, make various variations.
Above-mentioned detailed description of the invention is only for the design of the present invention of explaining, but not to the present inventionThe restriction of rights protection, allly utilizes this design to carry out the change of unsubstantiality to the present invention, all fallsEnter protection scope of the present invention.
Claims (10)
1. a severe cold areas bidirectional stretching polypropylene film antistatic additive, is characterized in that, bagDraw together following raw material: modifier, monoglyceride, antioxidant and polypropylene;
Described modifier is by ethoxylation octadecylamine, N, N-bis-(hydroxyethyl) coconut palmOleamide and alkylboronic acids alkanolamine ester is composite obtains.
2. antistatic additive as claimed in claim 1, is characterized in that, the weight percent of modifierThan being 8%-12%; The percentage by weight of monoglyceride is 8%-12%; The weight percent of antioxidantThan being 0.3%; Polyacrylic percentage by weight is 79.7%.
3. antistatic additive as claimed in claim 1, is characterized in that, described ethoxylation tenEight alkylamines are obtained by octadecylamine and ethyleneoxide addition.
4. antistatic additive as claimed in claim 1, is characterized in that,
The percentage by weight of described modifier is 12%;
The percentage by weight of described monoglyceride is 8%;
The percentage by weight of described antioxidant is 0.3%;
Described polyacrylic percentage by weight is 79.7%.
5. antistatic additive as claimed in claim 1 or 2 or 3 or 4, is characterized in that, described inAntioxidant be four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
6. a preparation method for antistatic additive as claimed in claim 1, is characterized in that, bagDraw together following steps:
(1) by octadecylamine, N, N-bis-(hydroxyethyl) coconut oleoyl amine and alkylboronic acids hydramineEster and reacting ethylene oxide obtain modifier;
(2) modifier and monoglyceride, antioxidant, polypropylene are mixed and obtain compound;
(3) compound is joined in extruder, melting is extruded, and makes antistatic master batch;
(4) antistatic master batch cool drying, the pelletizing of step (3) being made, pack and obtain anti-quietElectricity agent.
7. the preparation method of antistatic additive as claimed in claim 6, is characterized in that, described stepSuddenly the reaction of (1) is octadecylamine and oxirane generation addition reaction.
8. the preparation method of antistatic additive as claimed in claim 6, is characterized in that, described stepSuddenly the reaction of (1) is octadecylamine, N, N-bis-(hydroxyethyl) coconut oleoyl amine and alkylBoric acid alkanolamine ester carries out addition reaction with oxirane after high-speed mixer and mixing.
9. the preparation method of antistatic additive as claimed in claim 6, is characterized in that, describedOctadecylamine in step (1), N, N-bis-(hydroxyethyl) coconut oleoyl amine and alkylboronic acidsThe ratio of weight and number of alkanolamine ester is 9:1:2.
10. the preparation method of antistatic additive as claimed in claim 6, is characterized in that, describedExtruder is the high moment of torsion corotating twin-screw of high rotating speed mixing extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035947.5A CN105602109B (en) | 2016-01-19 | 2016-01-19 | A kind of severe cold areas bidirectional stretching polypropylene film antistatic agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035947.5A CN105602109B (en) | 2016-01-19 | 2016-01-19 | A kind of severe cold areas bidirectional stretching polypropylene film antistatic agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105602109A true CN105602109A (en) | 2016-05-25 |
| CN105602109B CN105602109B (en) | 2018-09-18 |
Family
ID=55982496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610035947.5A Active CN105602109B (en) | 2016-01-19 | 2016-01-19 | A kind of severe cold areas bidirectional stretching polypropylene film antistatic agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105602109B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437435A (en) * | 2019-07-16 | 2019-11-12 | 华南理工大学 | A kind of one-step method for synthesizing of terminal amino group functional polyethers |
| CN112126127A (en) * | 2020-10-09 | 2020-12-25 | 杭州临安德昌静电科技有限公司 | Antistatic agent and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353459A (en) * | 2008-09-07 | 2009-01-28 | 王锦江 | Efficient antistatic master batch for BOPP film and production process thereof |
| CN101864106A (en) * | 2009-04-20 | 2010-10-20 | 陈来甲 | Master batch for high-efficiency antistatic BOPP (Biaxially-oriented Polypropylene) film and production method thereof |
-
2016
- 2016-01-19 CN CN201610035947.5A patent/CN105602109B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353459A (en) * | 2008-09-07 | 2009-01-28 | 王锦江 | Efficient antistatic master batch for BOPP film and production process thereof |
| CN101864106A (en) * | 2009-04-20 | 2010-10-20 | 陈来甲 | Master batch for high-efficiency antistatic BOPP (Biaxially-oriented Polypropylene) film and production method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437435A (en) * | 2019-07-16 | 2019-11-12 | 华南理工大学 | A kind of one-step method for synthesizing of terminal amino group functional polyethers |
| CN110437435B (en) * | 2019-07-16 | 2021-08-10 | 华南理工大学 | One-step synthesis method of terminal amino-functionalized polyether |
| CN112126127A (en) * | 2020-10-09 | 2020-12-25 | 杭州临安德昌静电科技有限公司 | Antistatic agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105602109B (en) | 2018-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105482260B (en) | A kind of severe cold areas Biaxially oriented polypropylene bag making film and preparation method thereof | |
| CN100432132C (en) | Transparent film mother material and its preparation process | |
| CN101475721B (en) | Antistatic plastic for SMT carrier band, and preparation and use thereof | |
| CN101434726B (en) | Thermal contraction and antistatic composite master batch, preparation and use thereof | |
| CN104479305A (en) | Full-biodegradable composite as well as preparation method and application of full-biodegradable composite | |
| CN106751004A (en) | A kind of easy processing efficient anti-static PP composite material and preparation method thereof | |
| CN105602109A (en) | Antistatic agent for biaxially oriented polypropylene films in extremely-cold areas and preparation method of antistatic agent | |
| CN110483815A (en) | Application of the polyethylene glycol as active constituent on functional agglomerate | |
| CN105400064A (en) | Filling masterbatch and preparation method thereof | |
| CN101157781A (en) | Anti-static polyphenylacetylene combination and preparation method and sheet material | |
| CN102993458A (en) | Antistatic agent composite containing glycerin monostearate and preparation method thereof | |
| CN103849034A (en) | Polyethylene reinforced antistatic smooth masterbatch and preparation method thereof | |
| CN102051006B (en) | Radiation-resistance high-elastic resilience polyvinyl chloride composition and preparation method thereof | |
| CN101497713B (en) | Micropore preservative film | |
| CN111073123B (en) | Polyethylene master batch, preparation method thereof and polyethylene composition | |
| CN107383571A (en) | Environment-friendlyanti-crease anti-crease shrink package film | |
| CN103554714A (en) | Antistatic plastic | |
| CN103289174A (en) | Highly-universal carbon black master-batches, preparation system apparatus and preparation method thereof | |
| CN1765970A (en) | Highly effective antistatic agglomerate for biaxial tension polypropylene and its preparation method | |
| CN107200948A (en) | A kind of preparation method of antibacterial food PS packaging films | |
| CN111073122B (en) | Polyethylene composition and preparation method thereof | |
| CN112693203A (en) | Winding film and preparation method thereof | |
| CN110294910A (en) | A kind of high temperature water-soluble polyvinyl alcohol master batch and preparation method thereof | |
| CN109851887A (en) | A kind of smooth type composite polyethylene resin of opening | |
| CN103881324A (en) | Polyethylene glycol terephthalate enhanced antistatic smooth master batch and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |