CN104961972A - Waste plastic modifying method - Google Patents
Waste plastic modifying method Download PDFInfo
- Publication number
- CN104961972A CN104961972A CN201510435265.9A CN201510435265A CN104961972A CN 104961972 A CN104961972 A CN 104961972A CN 201510435265 A CN201510435265 A CN 201510435265A CN 104961972 A CN104961972 A CN 104961972A
- Authority
- CN
- China
- Prior art keywords
- grease
- modifying
- filter cake
- sorbent material
- minutes
- 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
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- 239000004033 plastic Substances 0.000 title claims abstract description 51
- 229920003023 plastic Polymers 0.000 title claims abstract description 51
- 239000002699 waste material Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000004519 grease Substances 0.000 claims abstract description 45
- 239000012065 filter cake Substances 0.000 claims abstract description 36
- 239000002245 particle Substances 0.000 claims abstract description 32
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 238000001746 injection moulding Methods 0.000 claims abstract description 8
- 238000005469 granulation Methods 0.000 claims abstract description 6
- 230000003179 granulation Effects 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000002594 sorbent Substances 0.000 claims description 32
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 11
- -1 polyethylene Polymers 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- 230000001476 alcoholic effect Effects 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 239000004927 clay Substances 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 230000000274 adsorptive effect Effects 0.000 claims description 3
- 238000005453 pelletization Methods 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 239000010775 animal oil Substances 0.000 claims description 2
- 238000004042 decolorization Methods 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- 235000013311 vegetables Nutrition 0.000 claims description 2
- 230000004913 activation Effects 0.000 abstract description 11
- 239000000945 filler Substances 0.000 abstract description 2
- 239000003463 adsorbent Substances 0.000 abstract 4
- 229940057995 liquid paraffin Drugs 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 239000013502 plastic waste Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 239000004902 Softening Agent Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229960000892 attapulgite Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides a waste plastic modifying method which comprises the following steps: mixing waste plastic, liquid paraffin and grease adsorbent filter cake particles, stirring for 5-10 minutes, and then performing extrusion moulding or injection moulding after granulation to obtain modified waste plastic. According to the method provided by the invention, the grease adsorbent filter cakes are creatively adopted for modifying the waste plastic, and a proper activation treatment method is provided, so that the outer surface of the treated grease adsorbent is exposed by the active points taken by grease, and the grease adsorbent is more suitable to serve as a waste plastic modifying filler. By adopting the method, comprehensive utilization of two wastes can be realized, and the mechanical properties of the waste plastic can be improved.
Description
Technical field
The invention belongs to technical field of plastic, be specifically related to a kind of method of modifying of waste or used plastics.
Background technology
Plastics refer to resin (or using monomer direct polymerization in the course of processing) for main component, with additives such as softening agent, weighting agent, lubricant, tinting materials for ancillary component, and the material of energy flowing forming in the course of processing.Plastics are the macromolecular compound of synthesis, freely can change body styles.Plastics are the materials utilizing raw material monomer to be polymerized with synthesis or condensation reaction, and be made up of additives such as synthetic resins and filler, softening agent, stablizer, lubricant, colorants, its main component is synthetic resins.
Plastic waste is then in the purposes such as civilian, industrial, uses and the general designation of the final plastics eliminated or replace.Along with plastics consumption constantly increases, waste plastic is also on the increase.Current China waste plastic is mainly plastics film, plastic wire and fabric, porous plastics, plastic package box and container, daily plastic goods, plastics bag and agricultural mulching etc.In addition, China's automotive plastic year consumption has reached 400,000 tons, electronic apparatus and household electrical appliances supporting plastics year consumption reached more than 100 ten thousand tons, become one of important sources of plastic waste after these product rejections.It is reported, 2011, China's plastic waste generation was about 2,800 ten thousand tons, within 2012, was 3,413 ten thousand tons.If the depositing of these plastic waste, transport, process wait for processed waste plastic raw material application and aftertreatment improper, will certainly welding, the harm common people are healthy.
Grease sorbent material is the acidic white earth of particle diameter below 100 microns (wilkinite) or adsorptive clay (attapulgite clay).Use the object of carclazyte to be the pigment removed in grease, colloid and soap class in oil prodution industry, China every year for the carclazyte of grease sorbent material more than 100,000 tons.At present, consume atlapulgite prepared by mass energy and manpower and materials after using as grease sorbent material, again do not utilize, and only owing to burning as auxiliary fuel containing certain Residual oil.This method could not realize the regeneration of resource, wastes a large amount of resources, rather unfortunately.
Summary of the invention
Goal of the invention: for problems of the prior art: plastic waste is difficult to process, and grease sorbent material does not have regeneration.The invention provides a kind of method of modifying of waste or used plastics, not only can realize two useless comprehensive utilization, the mechanical property of waste or used plastics can also be improved.
Technical scheme: method of modifying of the present invention is that stir 5 ~ 10 minutes, then injection molding after extrusion moulding or granulation, namely obtains modified waste or used plastics by waste or used plastics, whiteruss, the mixing of grease sorbent material filter cake particle.
Described waste or used plastics is the particle that recycle polyethylene or polypropylene or polystyrene extruding pelletization obtain.
Described extrusion condition is: extrusion temperature 150 ~ 200 DEG C, and extruded velocity is 200r/min.
The inventive point of key of the present invention is to utilize grease sorbent material filter cake particle to realize the improvement of waste or used plastics, the preparation method of described grease sorbent material filter cake particle is: grease sorbent material filter cake is carried out low speed (100 ~ 300r/min) mixing, mix 1 ~ 10 minute; Add the sodium hydroxide solution that mass concentration is 5%, after being progressively heated to 100 ~ 105 DEG C, carrying out (500 ~ 1000r/min) mixing at a high speed, mix 10 ~ 30 minutes; Adding mass concentration is 25% silane coupling agent alcoholic solution, and carry out (500 ~ 1000r/min) mixing at a high speed, mix 10 minutes, discharging, to obtain final product.
Each raw material add-on in above-mentioned preparation method, according to the mass fraction, grease sorbent material filter cake 100 parts, sodium hydroxide solution 1 ~ 10 part, silane coupling agent alcoholic solution 0.5 ~ 1.5 part.
Described raw material (grease sorbent material filter cake) is the residuum after acidic white earth or adsorptive clay are applied to vegetables oil and animal oil decolorization refining.
Further, described preparation method's step is as follows: by 100 mass parts sorbent material filter cakes under the rotating speed of 100 ~ 300r/min, mixes 1 ~ 10 minute; Adding 1 part of mass concentration is the sodium hydroxide solution of 5%, after being progressively heated to 100 ~ 105 DEG C, under the rotating speed of 500 ~ 1000r/min, mixes 10 ~ 30 minutes; Adding 1 part of mass concentration is 25% silane coupling agent alcoholic solution, and under the rotating speed of 500 ~ 1000r/min, mix 10 minutes, discharging, to obtain final product.According to the grease sorbent material filter cake particle obtained by above-mentioned raw materials proportioning and preparation method, for the modification of waste or used plastics, the mechanical property of waste or used plastics better can be increased.
Beneficial effect: the grease sorbent material filter cake that have employed of the invention carries out modification to waste or used plastics, and provide suitable activating treatment process, the outside surface of the grease sorbent material after processing is exposed by the active site that grease occupies, is more suitable for using as modifying waste plastic stopping composition.
Method of modifying provided by the invention, can improve the mechanical property of waste or used plastics, and reduces the cost of plastics, forms the closed circulation of raw material-product-raw material, achieves the recycling of limited resources, have good environment, Social and economic benef@.
The present invention's instrument and supplies used is simple, and method is ripe, and it is convenient to implement, and is easy to promote, has larger practical value.
Embodiment:
Embodiment 1
(1) activation of grease sorbent material filter cake particle: by 100 mass parts grease sorbent material filter cakes low speed mixing 5 minutes in mixing machine; Adding 1 part of mass concentration is the sodium hydroxide solution of 5%, high-speed mixing 15 minutes; Adding 1 part of mass concentration is 25% silane coupling agent alcoholic solution, and high-speed mixing 10 minutes, continues high-speed mixing discharging after 10 minutes after being heated to 105 DEG C, obtains the grease sorbent material filter cake particle activated.
(2) waste or used plastics particle and activation grease attached dose of filter cake particle is first mixed: 3 mass parts whiterusss and 100 mass parts waste polypropylene plastic particles are joined in activation grease attached dose of filter cake particle that step 1 obtains, mix 10 minutes.
(3) preparation of strongthener: step 2 is obtained raw material and send into parallel double-screw extruder and carry out injection molding after extrusion moulding or granulation, be namely enhanced material.Extrusion temperature 180 DEG C, extruded velocity is 200r/min.
The material of gained carries out Mechanics Performance Testing, and its tensile strength is 23.4MPa, and notched Izod impact strength is 4.5KJ/m
2.
Embodiment 2
(1) activation of grease sorbent material filter cake particle: by 100 mass parts grease sorbent material filter cakes low speed mixing 5 minutes in mixing machine; Adding 1 part of mass concentration is the sodium hydroxide solution of 5%, high-speed mixing 15 minutes; Adding 1 part of mass concentration is 25% silane coupling agent alcoholic solution, and high-speed mixing 10 minutes, continues high-speed mixing discharging after 10 minutes after being heated to 105 DEG C, obtains the grease sorbent material filter cake particle activated.
(2) waste or used plastics particle and activation grease attached dose of filter cake particle is first mixed: 3 mass parts whiterusss and 250 mass parts waste polypropylene plastic particles are joined in activation grease attached dose of filter cake particle that step 1 obtains, mix 10 minutes.
(3) preparation of strongthener: step 2 is obtained raw material and send into parallel double-screw extruder and carry out injection molding after extrusion moulding or granulation, be namely enhanced material.Extrusion temperature 180 DEG C, extruded velocity is 200r/min.
The material of gained carries out Mechanics Performance Testing, and its tensile strength is 22.6MPa, and notched Izod impact strength is 4.3KJ/m
2.
Embodiment 3
(1) activation of grease sorbent material filter cake particle: by 100 mass parts grease sorbent material filter cakes low speed mixing 5 minutes in mixing machine; Adding 1 part of mass concentration is the sodium hydroxide solution of 5%, high-speed mixing 15 minutes; Adding 1 part of mass concentration is 25% silane coupling agent alcoholic solution, and high-speed mixing 10 minutes, continues high-speed mixing discharging after 10 minutes after being heated to 105 DEG C, obtains the grease sorbent material filter cake particle activated.
(2) waste or used plastics particle and activation grease attached dose of filter cake particle is first mixed: 3 mass parts whiterusss and 400 mass parts waste polypropylene plastic particles are joined in activation grease attached dose of filter cake particle that step 1 obtains, mix 10 minutes.
(3) preparation of strongthener: step 2 is obtained raw material and send into parallel double-screw extruder and carry out injection molding after extrusion moulding or granulation, be namely enhanced material.Extrusion temperature 180 DEG C, extruded velocity is 200r/min.
The material of gained carries out Mechanics Performance Testing, and its tensile strength is 20.8MPa, and notched Izod impact strength is 4.1KJ/m
2.
Comparative example 1
Do not add the grease sorbent material of any activation, directly recovery polypropylene GRANULES is carried out injection molding, carry out Mechanics Performance Testing.Its tensile strength is 21.7MPa, and notched Izod impact strength is 4.4KJ/m
2.
Comparative example 2
100 mass parts waste polypropylene plastic particles are mixed 10 minutes, injection molding after extruding pelletization, extrusion temperature 180 DEG C with grease attached dose of filter cake particle 100 mass parts of not any process, and extruded velocity is 200r/min.The material of gained carries out Mechanics Performance Testing, and its tensile strength is 18.4MPa, and notched Izod impact strength is 3.6KJ/m
2.
To sum up, as can be seen from the experimental result of embodiment 1 ~ 3 and comparative example 1 ~ 2, waste or used plastics after method of modifying process of the present invention, compared with before process, its mechanical property is suitable, but due to adding of grease sorbent material filter cake, its raw materials cost is reduced greatly, achieves the utilization of waste.In addition, if after having carried out suitable activating process to grease attached dose of filter cake particle, not only cost has reduced, and the tensile strength of modified waste or used plastics and shock strength all increase.
Claims (7)
1. a method of modifying for waste or used plastics, is characterized in that stir 5 ~ 10 minutes, then injection molding after extrusion moulding or granulation, namely obtains modified waste or used plastics by waste or used plastics, whiteruss, the mixing of grease sorbent material filter cake particle.
2. method of modifying as claimed in claim 1, is characterized in that the preparation method of described grease sorbent material filter cake particle is: by grease sorbent material filter cake under the rotating speed of 100 ~ 300r/min, mix 1 ~ 10 minute; Add the sodium hydroxide solution that mass concentration is 5%, after being progressively heated to 100 ~ 105 DEG C, under the rotating speed of 500 ~ 1000r/min, mix 10 ~ 30 minutes; Adding mass concentration is 25% silane coupling agent alcoholic solution, and under the rotating speed of 500 ~ 1000r/min, mix 10 minutes, discharging, to obtain final product.
3. method of modifying as claimed in claim 2, is characterized in that each raw material add-on in described preparation method, according to the mass fraction, and grease sorbent material filter cake 100 parts, sodium hydroxide solution 1 ~ 10 part, silane coupling agent alcoholic solution 0.5 ~ 1.5 part.
4. method of modifying as claimed in claim 1, is characterized in that described grease sorbent material filter cake is the residuum after acidic white earth or adsorptive clay are applied to vegetables oil and animal oil decolorization refining.
5. method of modifying as claimed in claim 1, is characterized in that described waste or used plastics is the particle that recycle polyethylene or polypropylene or polystyrene extruding pelletization obtain.
6. method of modifying as claimed in claim 1, it is characterized in that described extrusion condition is: extrusion temperature 150 ~ 200 DEG C, extruded velocity is 200r/min.
7. method of modifying as claimed in claim 2, is characterized in that the preparation method of described grease sorbent material filter cake particle is: by 100 mass parts sorbent material filter cakes under the rotating speed of 100 ~ 300r/min, mix 1 ~ 10 minute; Adding 1 part of mass concentration is the sodium hydroxide solution of 5%, after being progressively heated to 100 ~ 105 DEG C, under the rotating speed of 500 ~ 1000r/min, mixes 10 ~ 30 minutes; Adding 1 part of mass concentration is 25% silane coupling agent alcoholic solution, and under the rotating speed of 500 ~ 1000r/min, mix 10 minutes, discharging, to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510435265.9A CN104961972B (en) | 2015-07-22 | 2015-07-22 | A kind of method of modifying of waste or used plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510435265.9A CN104961972B (en) | 2015-07-22 | 2015-07-22 | A kind of method of modifying of waste or used plastics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104961972A true CN104961972A (en) | 2015-10-07 |
| CN104961972B CN104961972B (en) | 2017-07-11 |
Family
ID=54216077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510435265.9A Active CN104961972B (en) | 2015-07-22 | 2015-07-22 | A kind of method of modifying of waste or used plastics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104961972B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106750954A (en) * | 2016-12-26 | 2017-05-31 | 安徽元通采暖科技有限公司 | Antistatic modified polypropylene processing method |
| CN111548547A (en) * | 2020-06-11 | 2020-08-18 | 江苏中恒宠物用品股份有限公司 | High-strength degradable plastic and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1385465A (en) * | 2002-05-16 | 2002-12-18 | 上海交通大学 | Deinking sludge powder filled modified thermoplastic polymer composite material and making method thereof |
| WO2012083972A1 (en) * | 2010-12-23 | 2012-06-28 | Tallinn University Of Technology | Composite of polymeric material with mineral fillers |
| CN103709557A (en) * | 2013-12-17 | 2014-04-09 | 中山联成化学工业有限公司 | Recycling method of waste diatomite filter cakes in plasticizer factory |
-
2015
- 2015-07-22 CN CN201510435265.9A patent/CN104961972B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1385465A (en) * | 2002-05-16 | 2002-12-18 | 上海交通大学 | Deinking sludge powder filled modified thermoplastic polymer composite material and making method thereof |
| WO2012083972A1 (en) * | 2010-12-23 | 2012-06-28 | Tallinn University Of Technology | Composite of polymeric material with mineral fillers |
| CN103709557A (en) * | 2013-12-17 | 2014-04-09 | 中山联成化学工业有限公司 | Recycling method of waste diatomite filter cakes in plasticizer factory |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106750954A (en) * | 2016-12-26 | 2017-05-31 | 安徽元通采暖科技有限公司 | Antistatic modified polypropylene processing method |
| CN111548547A (en) * | 2020-06-11 | 2020-08-18 | 江苏中恒宠物用品股份有限公司 | High-strength degradable plastic and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104961972B (en) | 2017-07-11 |
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| GR01 | Patent grant | ||
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| CB03 | Change of inventor or designer information |
Inventor after: Zhang Zhendong Inventor before: Dai Shaojun Inventor before: Hou Guihua Inventor before: Zhang Feng Inventor before: Xu Ning |
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| CB03 | Change of inventor or designer information | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20180523 Address after: 231100 Wei five road, industrial park, Xia Tang Town, Changfeng County, Hefei, Anhui Patentee after: HEFEI LIHONG PLASTIC MATERIAL Co.,Ltd. Address before: 224051 middle road of hope Avenue, Yancheng City, Jiangsu Province, No. 1 Patentee before: YANCHENG INSTITUTE OF TECHNOLOGY |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A modification method of waste plastics Effective date of registration: 20211224 Granted publication date: 20170711 Pledgee: Anhui Science and technology Financing Guarantee Co.,Ltd. Pledgor: HEFEI LIHONG PLASTIC MATERIAL Co.,Ltd. Registration number: Y2021980016075 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230911 Granted publication date: 20170711 Pledgee: Anhui Science and technology Financing Guarantee Co.,Ltd. Pledgor: HEFEI LIHONG PLASTIC MATERIAL Co.,Ltd. Registration number: Y2021980016075 |