CN103992508A - Preparation method of environment-friendly odorless regenerated rubber - Google Patents
Preparation method of environment-friendly odorless regenerated rubber Download PDFInfo
- Publication number
- CN103992508A CN103992508A CN201410188497.4A CN201410188497A CN103992508A CN 103992508 A CN103992508 A CN 103992508A CN 201410188497 A CN201410188497 A CN 201410188497A CN 103992508 A CN103992508 A CN 103992508A
- Authority
- CN
- China
- Prior art keywords
- rubber
- environment
- activator
- preparation
- parts
- 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.)
- Pending
Links
Classifications
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a preparation method of environment-friendly odorless regenerated rubber prepared through chemical desulfurization, milling and molding procedures with a tread rubber powder as a raw material. The preparation method is characterized in that: in the chemical desulfurization procedure, the added tread rubber powder and auxiliary agent formula comprises the components in parts by weight: 1200-2000 parts of the tread rubber powder, 120-200 parts of vegetable oil pitch, 2-10 parts of an activator, 10-40 parts of a carbonate, and 100-400 parts of water. The vegetable oil pitch instead of conventional coal tar, pine tar, coal pitch and the like is used as a softener for chemical vulcanization of the regenerated rubber, and simultaneously the carbonate is added to neutralize stearic acids and unsaturated fatty acids in the vegetable oil pitch, so that the prepared regenerated rubber can reach national standard A-level regenerated rubber standards, and is environmentally friendly and odorless. A leather shoe sole prepared from the regenerated rubber does not turn blue, does not turn white after soaking, and is good in wear resistance and good in quality.
Description
Technical field
The present invention relates to a kind of preparation method of regenerated rubber, particularly relate to a kind of preparation method of tasteless regenerated rubber of environment-friendly type.
Background technology
Regenerated rubber is by the physical desulfurization to waste rubber goodses such as tires (decompose, pulverize) and chemical desulfurization (the softening and activation under high temperature, high pressure), macromole cross-linked network in rubber item is destroyed to the small molecules mechanism for strand, make it become and can process viscoelastic body from elastomerics.
Traditional regenerated rubber is produced and has been passed through water law, oil process, after water/oil method, develop into now high-temperature dynamic desulfurization, normal temperature machine doctor treatment and infrared rays doctor treatment, the most frequently used still high-temperature dynamic desulfurization, its tenderizer using common are coal tar, Stockholm tar, coal-tar pitch etc., not only large to regenerated rubber contaminative (is mainly in the time using regenerated rubber, to occur jaundice, turn blue, the phenomenon such as turn white), and the rubber item smell of producing is very large, wherein contained aromatic hydrocarbon material also can affect to human consumer's physical and mental health, and (life rubber item is as rubber overshoes, leather shoes etc.).
Therefore those skilled in the art are devoted to the preparation method of the tasteless regenerated rubber of developing a kind of environmental protection.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide the preparation method of the tasteless regenerated rubber of a kind of environment-friendly type, operational safety.
For achieving the above object, the invention provides the preparation method of the tasteless regenerated rubber of a kind of environment-friendly type, comprise taking tyre surface rubber powder as raw material, make through chemical desulfurization, refining glue, molding procedure, it is characterized in that: in described chemical desulfurization operation, add in tyre surface rubber powder and auxiliary formula: according to parts by weight meter, tyre surface rubber powder 1200-2000 part, plant oil asphalt 120-200 part, activator 2-10 part, carbonate 10-40 part, water 100-400 part.
Adopt technique scheme, the plant oil asphalt that utilizes Oleum Gossypii semen tankage or soybean oil tankage to prepare replaces the petrochemical industry such as coal tar, coal-tar pitch class tenderizer and Stockholm tar, solve the pollution problem of the regenerated rubber of producing to derived product, solved again the secondary pollution problem to environment and the healthy infringement to practitioner in waste rubber resources recycling process.
But in plant oil asphalt, contain stearic acid and other unsaturated fatty acidss, acidic substance can produce directly impact to the sulfuration process of rubber, suitable stearic acid, Whitfield's ointment etc. can make the active raising of the vulcanization system in rubber item, and the rubber item density producing is better, but excessive acidic substance can make vulcanization rate slow down, and the goods that vulcanize there will be partially soft phenomenon.Therefore, we select to add carbonate to make a small amount of stearic acid generation saponification reaction in plant oil asphalt neutralize limited stearic acid.Secondly the present invention does not utilize oxyhydroxide and utilizes carbonate, and reaction milder makes to produce safer, reduces hurtful probability in the operating process such as workman's feeding.
Plant oil asphalt (not adding carbonate) and coal tar wet goods are done to each 200 grams of regenerated rubber that tenderizer produces and regenerated rubber of the present invention, after being ground into thin slice, laboratory, with scissors, film is cut into fragment, put into beaker, add the pure water of as much to boil 10 minutes, then oddments is filtered, again the solution after filtering is boiled to 100 milliliters in beaker, treat that solution is cooled to room temperature and carries out the test of PH test paper, coal tar does the regenerated rubber that tenderizer is produced, pH value is in 7. 5 left and right, and Oleum Gossypii semen plant asphalt does the regenerated rubber pH value of tenderizer production in 6 left and right.PH of the present invention is 6.5 left and right, is slightly acidic.
The regenerated rubber that the present invention is made and do not add according to formula of the present invention regenerated rubber and the existing regenerated rubber that utilizes the petrochemical industry such as coal tar, coal-tar pitch class tenderizer and Stockholm tar to make that carbonate makes and make leather sole according to identical technique.Do not add regenerated rubber that carbonate makes in the time of sulfuration, utilize regenerated rubber and the regenerated rubber of the present invention that the petrochemical industry such as coal tar, coal-tar pitch class tenderizer and Stockholm tar are made to want time delay to arrive sulfurizing point about 2 minutes than existing.
Adopt coal tar wet goods to do the reclaimed rubber production leather sole that tenderizer is produced, because the reason that coal tar pollutes, sole can move variable color very soon, sole is turned blue, and have sharp aroma, even if add essence also of no avail, but can not turn white after being soaked in water.The sole substantially tasteless that the environment-friendly type regenerated rubber that adopts plant oil asphalt (not adding carbonate) to do tenderizer production is produced, also can not turn blue, but after being soaked in water, sole will turn white.Slightly acidic regenerated rubber of the present invention makes leather sole have better wear resisting property, tasteless, does not turn blue, non-whitening after soaking.The indices of regenerated rubber of the present invention has all reached GB A level regenerated rubber standard.Tensile strength at yield 12-16MPA, pulls apart and extends 370-500%, mooney viscosity 60-90MLV, hardness 60-70 Shao Er A, proportion 1.1-1.2g/cm
3, abrasion 0.2-0.4CC.
As preferably: described carbonate is sodium carbonate or sodium bicarbonate or salt of wormwood or saleratus.
In technique scheme: described plant oil asphalt is Oleum Gossypii semen plant oil asphalt or soybean oil plant oil asphalt.
As preferably: in described chemical desulfurization operation, add in tyre surface rubber powder and auxiliary formula: according to parts by weight meter, tyre surface rubber powder 1600-2000 part, plant oil asphalt 160-200 part, activator 4-8 part, carbonate 20-30 part, water 200-350 part.
In technique scheme: the processing condition of desulfurization are: tyre surface rubber powder, plant oil asphalt, activator, carbonate and water are added in digester, material is constantly stirred, be heated to 270-280 DEG C simultaneously, in the time that pressure reaches 2.0-2.8MPa, stop heating, leave standstill after 5-10 minute, exhaust pressure relief discharging, completes desulfurization operations.
In technique scheme: for environmental protection, described activator is reclaimed rubber desulfurize environment-friendly type activator.
As preferably: described reclaimed rubber desulfurize environment-friendly type activator is reclaimed rubber desulfurize activator 480 or reclaimed rubber desulfurize activator 510 or reclaimed rubber desulfurize activator 450 or reclaimed rubber desulfurize activator 420 or alkyl phenol disulfide.
As preferably: the particle diameter of described tyre surface rubber powder is 30-32 order.
The invention has the beneficial effects as follows: 1, the present invention adopts plant oil asphalt to replace the tenderizer as regenerated rubber chemicure such as existing coal tar, Stockholm tar, coal-tar pitch, and add carbonate simultaneously the stearic acid in plant oil asphalt and unsaturated fatty acids are neutralized, make the regenerated rubber making can reach GB A level regenerated rubber standard, feeding and operate all safety, environmental protection, tasteless.
2, do not turn blue with the leather sole that this regenerated rubber makes, non-whitening after soaking, wear resistance is good, and quality is good.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Carbonate in the present invention is normal salt M
2cO
3with acid salt MHCO
3the summation of (M is metal) two classes.
Embodiment 1
A preparation method for the tasteless regenerated rubber of environment-friendly type, taking 30-32 order tyre surface rubber powder as raw material, makes through chemical desulfurization, refining glue, molding procedure.
In chemical desulfurization operation, add in tyre surface rubber powder and auxiliary formula: according to parts by weight meter, 1200 parts of tyre surface rubber powders, 120 parts of plant oil asphalts, 4804 parts, reclaimed rubber desulfurize activator, 10 parts, sodium bicarbonate, 100 parts, water.
Tyre surface rubber powder, plant oil asphalt, activator, sodium bicarbonate and water are added in digester, material is constantly stirred, be heated to 280 DEG C simultaneously, in the time that pressure reaches 2.8MPa, reaction times is probably 2h, stops heating, leaves standstill after 5 minutes, exhaust pressure relief discharging, completes desulfurization operations.Slightly refine, scrape refining, refining through rubber mixing machine again, then moulding obtains product.
The smooth exquisiteness of prepared product appearance, without particle and impurity, through test, physicals reaches the standard of GB A level regenerated rubber.Detected result is
Tensile strength at yield 12MPA, pulls apart and extends 370%, mooney viscosity 70MLV, hardness 70 Shao Er A, proportion 1.20g/cm
3, abrasion 0.325CC.
Embodiment 2
A preparation method for the tasteless regenerated rubber of environment-friendly type, taking 30-32 order tyre surface rubber powder as raw material, makes through chemical desulfurization, refining glue, molding procedure.
In chemical desulfurization operation, add in tyre surface rubber powder and auxiliary formula: according to parts by weight meter, 1800 parts of tyre surface rubber powders, 180 parts of plant oil asphalts, 5106 parts, reclaimed rubber desulfurize activator, 25 parts, soda, 350 parts, water.
Tyre surface rubber powder, plant oil asphalt, activator, soda and water are added in digester, material is constantly stirred, be heated to 270 DEG C simultaneously, in the time that pressure reaches 2.0MPa, the reaction times is probably 2h, stops heating, leave standstill after 10 minutes, exhaust pressure relief discharging, completes desulfurization operations.Slightly refine, scrape refining, refining through rubber mixing machine again, then moulding obtains product.
The smooth exquisiteness of prepared product appearance, without particle and impurity, through test, physicals reaches the standard of GB A level regenerated rubber.Detected result is
Tensile strength at yield 15MPA, pulls apart and extends 400%, mooney viscosity 65MLV, hardness 62 Shao Er A, proportion 1.18g/cm
3, abrasion 0.38CC.
Embodiment 3
A preparation method for the tasteless regenerated rubber of environment-friendly type, taking 30-32 order tyre surface rubber powder as raw material, makes through chemical desulfurization, refining glue, molding procedure.
In chemical desulfurization operation, add in tyre surface rubber powder and auxiliary formula: according to parts by weight meter, 2000 parts of tyre surface rubber powders, 200 parts of plant oil asphalts, 51010 parts, reclaimed rubber desulfurize activator, 40 parts, salt of wormwood, 400 parts, water.
Tyre surface rubber powder, plant oil asphalt, activator, salt of wormwood and water are added in digester, material is constantly stirred, be heated to 280 DEG C simultaneously, in the time that pressure reaches 2.8MPa, reaction times is probably 2h, stops heating, leaves standstill after 10 minutes, exhaust pressure relief discharging, completes desulfurization operations.Slightly refine, scrape refining, refining through rubber mixing machine again, then moulding obtains product.
The smooth exquisiteness of prepared product appearance, without particle and impurity, through test, physicals reaches the standard of GB A level regenerated rubber.Detected result is
Tensile strength at yield 16MPA, pulls apart and extends 420%, mooney viscosity 90MLV, hardness 70 Shao Er A, proportion 1.15g/cm
3, abrasion 0.28CC.
Embodiment 4
A preparation method for the tasteless regenerated rubber of environment-friendly type, taking 30-32 order tyre surface rubber powder as raw material, makes through chemical desulfurization, refining glue, molding procedure.
In chemical desulfurization operation, add in tyre surface rubber powder and auxiliary formula: according to parts by weight meter, 1600 parts of tyre surface rubber powders, 160 parts of plant oil asphalts, 4508 parts, reclaimed rubber desulfurize activator, 20 parts of saleratus, 200 parts, water.
Tyre surface rubber powder, plant oil asphalt, activator, saleratus and water are added in digester, material is constantly stirred, be heated to 280 DEG C simultaneously, in the time that pressure reaches 2.8MPa, reaction times is probably 2h, stops heating, leaves standstill after 10 minutes, exhaust pressure relief discharging, completes desulfurization operations.Slightly refine, scrape refining, refining through rubber mixing machine again, then moulding obtains product.
The smooth exquisiteness of prepared product appearance, without particle and impurity, through test, physicals reaches the standard of GB A level regenerated rubber.Detected result is
Tensile strength at yield 14MPA, pulls apart and extends 390%, mooney viscosity 70MLV, hardness 65 Shao Er A, proportion 1.20g/cm
3, abrasion 0.352CC.
Embodiment 5
A preparation method for the tasteless regenerated rubber of environment-friendly type, taking 30-32 order tyre surface rubber powder as raw material, makes through chemical desulfurization, refining glue, molding procedure.
In chemical desulfurization operation, add in tyre surface rubber powder and auxiliary formula: according to parts by weight meter, 1400 parts of tyre surface rubber powders, 140 parts of plant oil asphalts, 4202 parts, reclaimed rubber desulfurize activator, 15 parts, sodium bicarbonate, 250 parts, water.
Tyre surface rubber powder, plant oil asphalt, activator, sodium bicarbonate and water are added in digester, material is constantly stirred, be heated to 280 DEG C simultaneously, in the time that pressure reaches 2.8MPa, reaction times is probably 2h, stops heating, leaves standstill after 10 minutes, exhaust pressure relief discharging, completes desulfurization operations.Slightly refine, scrape refining, refining through rubber mixing machine again, then moulding obtains product.
The smooth exquisiteness of prepared product appearance, without particle and impurity, through test, physicals reaches the standard of GB A level regenerated rubber.Detected result is
Tensile strength at yield 15MPA, pulls apart and extends 385%, mooney viscosity 68MLV, hardness 68 Shao Er A, proportion 1.20g/cm
3, abrasion 0.4CC.
Embodiment 6
A preparation method for the tasteless regenerated rubber of environment-friendly type, taking 30-32 order tyre surface rubber powder as raw material, makes through chemical desulfurization, refining glue, molding procedure.
In chemical desulfurization operation, add in tyre surface rubber powder and auxiliary formula: according to parts by weight meter, 1800 parts of tyre surface rubber powders, 180 parts of plant oil asphalts, 4207 parts, reclaimed rubber desulfurize activator, 26 parts, sodium bicarbonate, 350 parts, water.
Tyre surface rubber powder, plant oil asphalt, activator, sodium bicarbonate and water are added in digester, material is constantly stirred, be heated to 280 DEG C simultaneously, in the time that pressure reaches 2.8MPa, reaction times is probably 2h, stops heating, leaves standstill after 10 minutes, exhaust pressure relief discharging, completes desulfurization operations.Slightly refine, scrape refining, refining through rubber mixing machine again, then moulding obtains product.
The smooth exquisiteness of prepared product appearance, without particle and impurity, through test, physicals reaches the standard of GB A level regenerated rubber.Detected result is
Tensile strength at yield 14MPA, pulls apart and extends 430%, mooney viscosity 66MLV, hardness 65 Shao Er A, proportion 1.20g/cm
3, abrasion 0.328CC.
More than describe preferred embodiment of the present invention in detail.Wherein, activator can also be the environment-friendly type activator of other types, as alkyl phenol disulfide.Carbonate can also be other carbonate, should be appreciated that those of ordinary skill in the art just can design according to the present invention make many modifications and variations without creative work.Therefore, all technician in the art, all should be in by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (8)
1. the preparation method of the tasteless regenerated rubber of environment-friendly type, comprise taking tyre surface rubber powder as raw material, make through chemical desulfurization, refining glue, molding procedure, it is characterized in that: in described chemical desulfurization operation, add in tyre surface rubber powder and auxiliary formula: according to parts by weight meter, tyre surface rubber powder 1200-2000 part, plant oil asphalt 120-200 part, activator 2-10 part, carbonate 10-40 part, water 100-400 part.
2. the preparation method of the tasteless regenerated rubber of environment-friendly type according to claim 1, is characterized in that: described plant oil asphalt is Oleum Gossypii semen plant oil asphalt or soybean oil plant oil asphalt.
3. the preparation method of the tasteless regenerated rubber of environment-friendly type according to claim 1, is characterized in that: described carbonate is sodium carbonate or sodium bicarbonate or salt of wormwood or saleratus.
4. according to the preparation method of the tasteless regenerated rubber of environment-friendly type described in claim 1-3 any one, it is characterized in that: in described chemical desulfurization operation, add in tyre surface rubber powder and auxiliary formula: according to parts by weight meter, tyre surface rubber powder 1600-2000 part, plant oil asphalt 160-200 part, activator 4-8 part, carbonate 20-30 part, water 200-350 part.
5. the preparation method of the tasteless regenerated rubber of environment-friendly type according to claim 4, it is characterized in that: the processing condition of desulfurization are: tyre surface rubber powder, plant oil asphalt, activator, carbonate and water are added in digester, material is constantly stirred, be heated to 270-280 DEG C simultaneously, in the time that pressure reaches 2.0-2.8MPa, stop heating, leave standstill after 5-10 minute, exhaust pressure relief discharging, completes desulfurization operations.
6. according to the preparation method of the tasteless regenerated rubber of environment-friendly type described in any one in claim 1-2 or 5, it is characterized in that: described activator is reclaimed rubber desulfurize environment-friendly type activator.
7. the preparation method of the tasteless regenerated rubber of environment-friendly type according to claim 6, is characterized in that: described reclaimed rubber desulfurize environment-friendly type activator is reclaimed rubber desulfurize activator 480 or reclaimed rubber desulfurize activator 510 or reclaimed rubber desulfurize activator 450 or reclaimed rubber desulfurize activator 420 or alkyl phenol disulfide.
8. the preparation method of the tasteless regenerated rubber of environment-friendly type according to claim 1, is characterized in that: the particle diameter of described tyre surface rubber powder is 30-32 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410188497.4A CN103992508A (en) | 2014-05-07 | 2014-05-07 | Preparation method of environment-friendly odorless regenerated rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410188497.4A CN103992508A (en) | 2014-05-07 | 2014-05-07 | Preparation method of environment-friendly odorless regenerated rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103992508A true CN103992508A (en) | 2014-08-20 |
Family
ID=51306864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410188497.4A Pending CN103992508A (en) | 2014-05-07 | 2014-05-07 | Preparation method of environment-friendly odorless regenerated rubber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103992508A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114773702A (en) * | 2022-05-30 | 2022-07-22 | 四川远星橡胶有限责任公司 | Reclaimed rubber with stable Mooney and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002086449A (en) * | 2000-09-20 | 2002-03-26 | Kokubun Kinzoku Kk | Waste tire recycling method |
| KR20020089562A (en) * | 2001-05-23 | 2002-11-29 | 진명산업(주) | Reclaim rubber Device |
| CN1830646A (en) * | 2004-10-09 | 2006-09-13 | 陈民铎 | Regeneration method of waste elastic body |
| CN102153796A (en) * | 2011-03-18 | 2011-08-17 | 盛智娟 | Environmentally-friendly tire reclaimed rubber and preparation method thereof |
| CN103341920A (en) * | 2013-06-26 | 2013-10-09 | 金轮橡胶（海门）有限公司 | Production process of fine rubber |
-
2014
- 2014-05-07 CN CN201410188497.4A patent/CN103992508A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002086449A (en) * | 2000-09-20 | 2002-03-26 | Kokubun Kinzoku Kk | Waste tire recycling method |
| KR20020089562A (en) * | 2001-05-23 | 2002-11-29 | 진명산업(주) | Reclaim rubber Device |
| CN1830646A (en) * | 2004-10-09 | 2006-09-13 | 陈民铎 | Regeneration method of waste elastic body |
| CN102153796A (en) * | 2011-03-18 | 2011-08-17 | 盛智娟 | Environmentally-friendly tire reclaimed rubber and preparation method thereof |
| CN103341920A (en) * | 2013-06-26 | 2013-10-09 | 金轮橡胶（海门）有限公司 | Production process of fine rubber |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114773702A (en) * | 2022-05-30 | 2022-07-22 | 四川远星橡胶有限责任公司 | Reclaimed rubber with stable Mooney and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104151660B (en) | The preparation method of tasteless regenerated rubber | |
| CN103980581A (en) | Method for producing environment-friendly odourless regenerated rubber by utilizing waste and old tires | |
| CN104004244A (en) | Process for producing environmental-friendly regenerated rubber by using waste/used tires | |
| CN102181160B (en) | Environmentally-friendly biomass compound rubber regenerant and preparation method thereof | |
| CN103910925B (en) | A kind of tasteless EVA material as sole and preparation method thereof | |
| CN102838788A (en) | Shell powder-natural rubber composite material and preparation method thereof | |
| JP6383899B1 (en) | Rubber composition | |
| CN103992507A (en) | Production process of environment-friendly regenerated rubber | |
| CN103992506A (en) | Preparation method of environment-friendly regenerated rubber | |
| Ho | The production of natural rubber from hevea brasiliensis latex: Colloidal properties, preservation, purification and processing | |
| CN103992537A (en) | Method for producing regenerated rubber by utilizing waste and old tires | |
| CN103992508A (en) | Preparation method of environment-friendly odorless regenerated rubber | |
| CN105462022A (en) | Manufacturing method of industrial environment-friendly reclaimed rubber | |
| CN105524346A (en) | Deodorant EVA (Ethylene Vinyl Acetate Copolymer) composite sole material and preparation method thereof | |
| CN104004246A (en) | Process for producing environmental-friendly and odorless regenerated rubber by using tread rubber powder prepared from waste/used tires | |
| CN104163963A (en) | Technology for producing high-quality environmentally-friendly reclaimed rubber by using waste tires | |
| CN104004245A (en) | Method for preparing novel high-quality regenerated rubber | |
| CN104004247A (en) | Method for preparing high-quality, environmental-friendly and odorless regenerated rubber | |
| CN103819712B (en) | A kind of sweetening process need not add the production method for reclaimed rubber of activator | |
| CN105228454A (en) | Bactericidal composition and manufacture method thereof | |
| US1970469A (en) | Manufacture of rubber | |
| CN107868274A (en) | A kind of preparation method of reclaimed rubber | |
| Gupta et al. | Sustainable value creation from leather solid wastes | |
| CN107057096A (en) | A kind of environmentally friendly packaging material for food and its preparation technology of the rice-straw fibre that adulterates | |
| US1772218A (en) | Method for the manufacture of sea caoutchouc |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140820 |
|
| RJ01 | Rejection of invention patent application after publication |