CN1590449A - Additive composition for promoting degradation of plastics - Google Patents
Additive composition for promoting degradation of plastics Download PDFInfo
- Publication number
- CN1590449A CN1590449A CNA031571883A CN03157188A CN1590449A CN 1590449 A CN1590449 A CN 1590449A CN A031571883 A CNA031571883 A CN A031571883A CN 03157188 A CN03157188 A CN 03157188A CN 1590449 A CN1590449 A CN 1590449A
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- plastics
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
-
- 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
-
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
Disclosed herein is an additive composition for promoting the degradation of plastics. The additive composition can help the degradation of plastic articles, e.g., disposable plastic containers or vinyl packaging containers, manufactured from various kinds of plastic raw materials in a short period of time, and at the same time, can control the time required for the degradation of the plastic articles. The additive composition comprises 70~80 parts by weight of calcium carbonate, 10~20 parts by weight of polypropylene, 2~4 parts by weight of 56~60% liquid paraffin, 1~2 parts by weight of stearic acid and 3~5 parts by weight of a self-degradable polymeric material , based on 100 parts by weight of the composition. Further disclosed is a degradable plastic article manufactured by adding the additive composition to a plastic raw material.
Description
Technical field
The present invention relates to be used to promote the compositions of additives of plastic degradation, relate more particularly to be used to promote the compositions of additives of plastic degradation, said composition helps at short notice from the plastics of various raw materials for plastics production manufacturings such as the degraded of disposable plastic container or vinyl packaging vessel.
Technical background
In recent years, along with comprising that by various plastics alkylene resins the demand of shopping bag, vinyl refuse, plastic packaging containers and one-trip container that polyethylene, polypropylene etc. are made obviously increases, the quantity of the refuse of discharge sharply increases.
At present, mainly by burning or bury the most of plastic waste of processing.When the incomplete combustion plastic waste, these treatment processs produce the atmospheric polluting material of a considerable amount of environmental toxins, toxicity dioxin and other discharging, cause the serious environmental pollution problem.For solving these problems of conventional treatment method, need environmental friendliness and non-toxicity degradative plastics, the microbiological deterioration that these plastics can be after using exist in by light or soil.
Degradative plastics roughly is divided into following classification: by the biodegradable plastic of the microbiological deterioration of living in physical environment such as soil or water; The photodegradable plastics of when being exposed to sunlight, degrading; By in common plastics, adding the biological decomposition plastics that degradable substance obtains; With biodegradable and photodegradable plastics with its binding characteristic etc.
Conventional degradable plastics mainly uses W-Gum, yam starch or aliphatic polyester manufacturing.By partly substitute the phenyl ring part of the aromatic polyester that does not have degradation property, the aliphatic polyester that preparation can be degraded in physical environment with hydrocarbon.
Yet the shortcoming of most conventional degradative plastics is that the control of degradation rate is difficult, and it is too slow to degrade, and particularly the kind of applicable raw materials for plastics production is very limited.
Summary of the invention
Therefore, consider above problem and finish the present invention.The purpose of this invention is to provide a kind of compositions of additives that is used to promote plastic degradation, said composition helps at short notice the plastics made from various raw materials for plastics production such as the degraded of disposable plastic container or vinyl packaging vessel, required time of may command plastics degraded simultaneously.
For finishing above purpose of the present invention, a kind of compositions of additives that is used to promote plastic degradation is provided, said composition comprises: the lime carbonate of 70～80 weight parts; The polypropylene of 10～20 weight parts; 56～60% whiterusss of 2～4 weight parts; The stearic acid of 1～2 weight part; With 3～5 weight parts can be from degradation of polymer material, based on the composition of 100 weight parts.
According to the present invention, also provide by in raw materials for plastics production, adding the degradable plastic product that described compositions of additives is made.
Below, explain the present invention in detail.
The compositions of additives that is used to promote plastic degradation according to the present invention comprises the lime carbonate of 70～80 weight parts; The polypropylene of 10～20 weight parts; 56～60% whiterusss of 2～4 weight parts; The stearic acid of 1～2 weight part; With 3～5 weight parts can be from degradation of polymer material, based on 100 weight part compositions.
Join in the compositions of additives of the present invention lime carbonate lentamente with ambient moisture reaction, increasing during the plastics oxidative degradation contact area with oxygen, thereby shorten the degradation time of plastics.When the amount of the lime carbonate that adds based on 100 weight part compositions of additives during, exist waste plastic product to postpone the problem of degraded less than 70 weight parts.When the amount of the lime carbonate that adds surpassed 80 weight parts, the wearing quality of final plastics was relatively poor, and because as the less relatively granulation difficulty that makes compositions of additives of the polyacrylic amount of binding agent.Therefore, be preferably based on the scope adding lime carbonate of 100 weight part compositions of additives with 70～80 weight parts.
The polypropylene that joins in the compositions of additives of the present invention as binding agent is used to increase the cohesive force of compositions of additives to promote the granulation of compositions of additives.When the polyacrylic amount that adds based on 100 weight part compositions of additives during less than 10 weight parts, there is the problem of compositions of additives cohesive force difference, make the granulation difficulty of compositions of additives.When the polyacrylic amount that adds surpasses 20 weight parts, thereby exist the relatively little waste plastic product that causes of amount of the lime carbonate that is used to promote final plastic degradation to postpone the problem of degraded.Therefore, be preferably based on the scope adding polypropylene of 100 weight part compositions of additives with 10～20 weight parts.
Join whiteruss in the compositions of additives of the present invention as lubricant and between the granulation stage of compositions of additives, promote flowability in the forcing machine.Therefore, be preferably based on the scope adding whiteruss of 100 weight part compositions of additives with 2～4 weight parts.
Because the stearic acid that joins in the compositions of additives of the present invention comprises autoxidisable unsaturated group, it is used to promote the initial degraded of waste plastic product.When the stearic amount that adds based on 100 weight part compositions of additives during, exist waste plastic product to postpone the problem of degraded less than 1 weight part.When the stearic amount that adds surpasses 2 weight parts, there is the problem of final plastics poor durability.Therefore, be preferably based on the scope adding stearic acid of 100 weight part compositions of additives with 1～2 weight part.
Join can be used at the initial continuous degradation plastics afterwards of degrading of the plastics that cause by stearic acid in the present composition from degradation of polymer material.Can comprise common starch-based polymer, cellulose-based polymer, other known synthetic polymer etc. from the example of degradation of polymer material.For example, starch-based polymer is selected from W-Gum, wheat starch, yam starch and rice starch, and cellulose-based polymer comprises Mierocrystalline cellulose and derivative thereof.
Can during less than 3 weight parts, exist waste plastic product to postpone the problem of degraded from the amount of degradation of polymer material when what add based on 100 weight part compositions of additives.When add can surpass 5 weight parts from the amount of degradation of polymer material the time, have the problem of final plastics poor durability.Therefore, being preferably based on 100 weight part compositions of additives can be from degradation of polymer material with the scope adding of 3～5 weight parts.
Can melt extrude and molding methods by known, the compositions of additives for preparing like this is configured as the pellet that is of a size of 2～10mm.At this moment, can easily carry out granulation according to common prilling process.
Can be at the pellet of plastics formation as adding during the manufacturing of shopping bag, vinyl refuse, plastic packaging containers and disposable plastic container.The plastics that obtain can be degraded at short notice fast.
The starting material that are used for plastics are selected from polyethylene, polypropylene, polyvinyl chloride, ABS resin and polystyrene.Except that these polymkeric substance, other various raw materials for plastics production also can be used for the manufacturing of plastics.
During using these starting material to make plastics, make it possible to reach freely controlling to final plastics degradation time by the amount of controlling described compositions of additives.For example, under the situation of reusing plastics, preferably add the feasible degradative plastics goods in a long time of described compositions of additives with little amount.On the other hand, after using, abandon plastics immediately, under the situation as one-trip container, preferably add the feasible degradative plastics goods as quickly as possible of described compositions of additives with big amount.
As mentioned above, can during the manufacturing as disposable plastic container or vinyl packaging vessel, add at the plastics of making from various raw materials for plastics production according to the compositions of additives that is used to promote plastic degradation of the present invention.The plastics that can degrade at short notice and make like this.In addition, can easily control the degradation time of waste plastic product by the amount of control compositions of additives.
Embodiment
Below, with reference to the following example the present invention is described in more detail.Yet, provide these embodiment and only be used for illustrative purposes, rather than limitation of the present invention.
＜embodiment 1 〉
With 76 weight part lime carbonate, 16 weight part polypropylene, 4 weight parts, 60% whiteruss, 1 weight part stearic acid and 3 weight parts can join in the homogenizer from degradation of polymer material.With the mixture heat fusing that obtains, stir, using forcing machine to extrude and cut with preparation size is the pellet of 2～10mm.
＜embodiment 2 〉
During using polyacrylic disposable plastic container to make,, add the pellet of preparation among the embodiment 1 with the amount of 40 weight parts based on 100 weight part polypropylene.Make the degradable disponsable plastic containers from this mixture.
＜embodiment 3 〉
During using polyacrylic disposable plastic container to make,, add the pellet of preparation among the embodiment 1 with the amount of 20 weight parts based on 100 weight part polypropylene.Make the degradable disponsable plastic containers from this mixture.
＜Comparative Examples 1 〉
The pellet that only uses polypropylene and do not add among the embodiment 1 preparation is to make disposable plastic container.
＜experimental example 〉
At average every day of 100MJ/m
2Radiation under, with respectively embodiment 2 and 3 and Comparative Examples 1 in the disposable plastic container made be exposed under the natural light 40 days.Respectively before exposing to the open air and measure the molecular-weight average of plastic containers and the increment of molecular-weight average afterwards.The results are shown in Table 1.
[table 1]
| Embodiment No. | Exposure duration (my god) | |||||
| ???????????0 | ??????????30 | ??????????40 | ||||
| Molecular weight | Degradation rate | Molecular weight | Degradation rate | Molecular weight | Degradation rate | |
| Embodiment 2 | ?205,000 | ??0 | ?22,550 | ??89.0％ | 9,020 | ??95.6％ |
| Embodiment 3 | ?205,000 | ??0 | ?59,450 | ??71.0％ | 44,280 | ??78.4％ |
| Comparative Examples 1 | ?205,000 | ??0 | ?205,000 | ??0 | 205,000 | ??0 |
As can be seen from Table 1, the compositions of additives that is used to promote plastic degradation according to the present invention can promote the degraded of plastics at short notice.Especially, can easily control the degradation time of plastics by the amount of control compositions of additives.
As can be seen from the above description, be used to promote that according to of the present invention the compositions of additives of plastic degradation helps from plastics such as the disposable plastic container or the degraded at short notice of vinyl packaging vessel of various raw materials for plastics production manufacturings, can control the required time of plastics degraded by the amount of control compositions of additives simultaneously.Therefore, the present invention is very useful in the industry relevant with plastics.
Although described the preferred embodiments of the invention that are used for illustrative purpose, it will be appreciated by those skilled in the art that, under the situation that does not deviate from the disclosed scope of the invention and spirit in the claims, can carry out various improvement, add and replace the present invention.
Claims (4)
1, a kind of compositions of additives that is used to promote plastic degradation, contain based on the composition of 100 weight parts:
The lime carbonate of 70～80 weight parts;
The polypropylene of 10～20 weight parts;
56～60% whiterusss of 2～4 weight parts;
The stearic acid of 1～2 weight part; With
Certainly the polymer materials of degraded of 3～5 weight parts.
2, according to the compositions of additives that is used to promote plastic degradation of claim 1, the wherein said polymer materials of degraded certainly be selected from starch-based polymer and cellulose-based polymer.
3, by joining the degradable plastic product of making in the raw materials for plastics production according to the compositions of additives of claim 1 or 2.
4, according to the degradable plastic product of claim 3, wherein said raw materials for plastics production are selected from polyethylene, polypropylene, polyvinyl chloride, ABS resin and polystyrene.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030056639 | 2003-08-14 | ||
| KR1020030056639A KR20050017586A (en) | 2003-08-14 | 2003-08-14 | Additive composition for hastening decomposition of plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1590449A true CN1590449A (en) | 2005-03-09 |
Family
ID=34192099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031571883A Pending CN1590449A (en) | 2003-08-14 | 2003-09-18 | Additive composition for promoting degradation of plastics |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20050017586A (en) |
| CN (1) | CN1590449A (en) |
| WO (1) | WO2005017015A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086566A (en) * | 2010-11-16 | 2011-06-08 | 安徽润维无纺布有限公司 | Polypropylene spun-bonded non-woven material capable of being degraded acceleratedly and process thereof |
| CN102382476A (en) * | 2011-09-30 | 2012-03-21 | 中国人民解放军第三军医大学第三附属医院 | Room-temperature plastic deformation material and manufacturing method thereof |
| CN101248126B (en) * | 2005-06-23 | 2013-01-02 | 龙塑工业(马)私人有限公司 | A composition of matter for degradable additive and process for making same |
| CN102863671A (en) * | 2012-08-03 | 2013-01-09 | 扬州辰逸旅游用品有限公司 | Toothbrush handle and production method thereof |
| CN104804455A (en) * | 2014-01-28 | 2015-07-29 | 深圳齐心集团股份有限公司 | Plastic degrading material and preparation method thereof |
| CN106810837A (en) * | 2015-11-30 | 2017-06-09 | 西安普草瑞珊生物科技有限责任公司 | Nanometer calcium Study of Biodegradation of Common compound resin and its preparation and application |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100598151B1 (en) * | 2005-09-20 | 2006-07-07 | (주) 성보 | A tarpaulin coating material |
| KR100689270B1 (en) * | 2005-12-28 | 2007-03-08 | (주)지앤씨코리아 | Aerobic biodegradable foam sheet and method for producing it |
| CN101851355B (en) * | 2010-06-23 | 2012-05-09 | 孙彦升 | Degradable starch-based plastic masterbatch and preparation method thereof |
| WO2016013001A2 (en) * | 2014-07-22 | 2016-01-28 | Tama Plastic Industry | An "on-demand" self-degrading polymer composition and method thereof |
| US10683399B2 (en) | 2018-06-26 | 2020-06-16 | Intrinsic Advanced Materials, LLC | Biodegradable textiles, masterbatches, and method of making biodegradable fibers |
| CN110527191B (en) * | 2019-09-09 | 2021-07-16 | 浙江山联新材料科技有限公司 | Inorganic degradable plastic master batch material and preparation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930011219B1 (en) * | 1990-05-01 | 1993-11-29 | 장화영 | Preparation of plastic product which is decomposable by light and organism |
| KR950006136B1 (en) * | 1991-07-29 | 1995-06-09 | 주식회사조양흥산 | Self-degradable plastic composition |
| JPH05186623A (en) * | 1992-01-14 | 1993-07-27 | Dainippon Printing Co Ltd | Porous sheet |
| KR100376000B1 (en) * | 1993-12-06 | 2003-08-14 | 프란츠 하스 바펠마시넨 인두스트리게젤샤프트 엠.베.하. | Manufacturing method of thin degradable molded article based on starch |
| CN1233717C (en) * | 2000-12-06 | 2005-12-28 | 郝本忠 | Polynary composite for light and biological degraded plastic product and its use |
-
2003
- 2003-08-14 KR KR1020030056639A patent/KR20050017586A/en not_active Application Discontinuation
- 2003-09-18 CN CNA031571883A patent/CN1590449A/en active Pending
-
2004
- 2004-06-01 WO PCT/KR2004/001293 patent/WO2005017015A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101248126B (en) * | 2005-06-23 | 2013-01-02 | 龙塑工业(马)私人有限公司 | A composition of matter for degradable additive and process for making same |
| CN102086566A (en) * | 2010-11-16 | 2011-06-08 | 安徽润维无纺布有限公司 | Polypropylene spun-bonded non-woven material capable of being degraded acceleratedly and process thereof |
| CN102382476A (en) * | 2011-09-30 | 2012-03-21 | 中国人民解放军第三军医大学第三附属医院 | Room-temperature plastic deformation material and manufacturing method thereof |
| CN102863671A (en) * | 2012-08-03 | 2013-01-09 | 扬州辰逸旅游用品有限公司 | Toothbrush handle and production method thereof |
| CN104804455A (en) * | 2014-01-28 | 2015-07-29 | 深圳齐心集团股份有限公司 | Plastic degrading material and preparation method thereof |
| CN106810837A (en) * | 2015-11-30 | 2017-06-09 | 西安普草瑞珊生物科技有限责任公司 | Nanometer calcium Study of Biodegradation of Common compound resin and its preparation and application |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005017015A1 (en) | 2005-02-24 |
| KR20050017586A (en) | 2005-02-22 |
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