CN103059361B - Rubber and production method thereof - Google Patents
Rubber and production method thereof Download PDFInfo
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- CN103059361B CN103059361B CN201310030537.8A CN201310030537A CN103059361B CN 103059361 B CN103059361 B CN 103059361B CN 201310030537 A CN201310030537 A CN 201310030537A CN 103059361 B CN103059361 B CN 103059361B
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 49
- 239000005060 rubber Substances 0.000 title claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 title abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 26
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims abstract description 26
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000006242 Semi-Reinforcing Furnace Substances 0.000 claims abstract description 13
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 13
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 13
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000008117 stearic acid Substances 0.000 claims abstract description 13
- 239000011787 zinc oxide Substances 0.000 claims abstract description 13
- 239000012188 paraffin wax Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000006238 High Abrasion Furnace Substances 0.000 claims description 24
- 239000005864 Sulphur Substances 0.000 claims description 22
- 239000003292 glue Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 13
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 claims description 11
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 claims description 10
- 229920000642 polymer Polymers 0.000 claims description 10
- 229920013649 Paracril Polymers 0.000 claims description 7
- 239000012634 fragment Substances 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 claims description 5
- 238000009958 sewing Methods 0.000 abstract description 7
- 229920000459 Nitrile rubber Polymers 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000006232 furnace black Substances 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 abstract 1
- 238000007723 die pressing method Methods 0.000 abstract 1
- 229910052717 sulfur Inorganic materials 0.000 abstract 1
- 239000011593 sulfur Substances 0.000 abstract 1
- KPAPHODVWOVUJL-UHFFFAOYSA-N 1-benzofuran;1h-indene Chemical compound C1=CC=C2CC=CC2=C1.C1=CC=C2OC=CC2=C1 KPAPHODVWOVUJL-UHFFFAOYSA-N 0.000 description 5
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- -1 promotor Substances 0.000 description 4
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 4
- 229960002447 thiram Drugs 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
Abstract
The invention discloses rubber and a production method thereof and in particular relates to rubber used for processing a clamping head of a control panel of a sewing machine and a production method thereof. The rubber is prepared from the following raw materials such as nitrile butadiene rubber, zinc oxide, stearic acid, an anti-aging agent, paraffin, an accelerant, sulfur, high-abrasion-resistance furnace black, pollution-free low-definite-elongation semi-reinforcing furnace black and dibutyl phthalate by totally enclosed mixing, cooling, vulcanizing tests, vulcanizing, mixing, cutting, die pressing and the like. The rubber is high in quality, and when the rubber is used for processing the clamping head of the control panel of the sewing machine, both the product percent of pass and production efficiency are high.
Description
Technical field
The present invention relates to a kind of rubber and production method thereof.Specifically, be rubber and the production method thereof for processing sewing machine control panel dop.
Background technology
At present, being used for the rubber of processing sewing machine control panel dop is all traditional rubber, this traditional rubber be with butadiene acrylonitrile rubber, zinc oxide, stearic acid, coumarone indene resin, anti-aging agent, promotor, two-benzothiazolyl mercaptan, tetramethyl-thiuram disulfide, sulphur, high abrasion furnace black(HAF), general purpose furnace black, uncontamination low surely stretch semi-reinforcing furnace black, dibutyl phthalate and dibutyl phthalate etc. raw material be mixing form.In raw material due to this rubber, contain coumarone indene resin, slightly do not notice that being prone to coumarone indene resin not exclusively melts in mixing process, the rubber of producing can be bubbled, quality product is bad.Again because the promotor using in above-mentioned rubber compounding is tetramethyl-thiuram disulfide, and tetramethyl-thiuram disulfide is quick acting accelerator, makes the heat-resisting tear strength of rubber made low.Manufacture the dop of sewing machine control panel with this rubber, the neck place easy fracture of dop when the demoulding, the qualification rate of product is lower.In addition, because the heat-resisting tear strength of the rubber of making is low, when inspection, need break the neck of each product into two with one's hands and test, need cost a large amount of manpower and time, make production efficiency not high.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of rubber.This rubber, quality is good, and with the dop of this Rubber processing sewing machine control panel, conforming product rate is high, and production efficiency is high.
For addressing the above problem, take following technical scheme:
Rubber feature of the present invention is the raw material that comprises following parts by weight:
95 ~ 105 parts of paracrils;
4.5 ~ 5.5 parts, zinc oxide;
0.8 ~ 1.2 part of stearic acid;
1.3 ~ 1.7 parts, anti-aging agent;
0.4 ~ 0.6 part, paraffin;
2 ~ 2.3 parts of promotor;
1.8 ~ 2.2 parts, sulphur;
23 ~ 27 parts of high abrasion furnace black(HAF);
Low 40 ~ 50 parts of the semi-reinforcing furnace black of surely stretching of uncontamination;
45 ~ 55 parts of dibutyl phthalates;
Described anti-aging agent is with 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer and N-sec.-propyl-N '-diphenyl-para-phenylene diamine, according to 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer: the part by weight of N-sec.-propyl-N '-diphenyl-para-phenylene diamine=2:1 mixes; Described promotor is with dibenzothiazyl disulfide and vulkacit D, mixes according to the part by weight of dibenzothiazyl disulfide: vulkacit D=5:3.5.
The method of producing rubber of the present invention comprises the following steps successively:
First paracril is cut into fragment and weighs up weight, and drop in Banbury mixer, 55 ~ 65 seconds of banburying;
Then, zinc oxide, stearic acid, anti-aging agent, paraffin, promotor are added in Banbury mixer to 55 ~ 65 seconds of banburying;
Afterwards, add high abrasion furnace black(HAF), low semi-reinforcing furnace black and the dibutyl phthalate surely stretched of uncontamination, in 55 ~ 65 seconds of kneading, obtain blend glue stuff;
Afterwards, banburying chamber's temperature is risen to 120 degree, automatically blend glue stuff is entered by setup program in 22 cun of mills, under the roll spacing of 3 ~ 5mm, thin-pass three times;
Afterwards, blend glue stuff is carried out to cooling, cooling, its temperature is down to below 90 degrees Celsius;
Afterwards, cooled blend glue stuff is dropped in 24 cun of mills, and add sulphur, under the roll spacing of 1 ~ 2mm, thin-pass three times, obtains rubber unvulcanizate;
Afterwards, become instrument with sulphur, at the temperature of 170 ~ 180 degrees Celsius, vulcanize 7 ~ 9 minutes, carry out sulphur and become test;
Afterwards, under 170 ~ 180 degrees Celsius, vulcanize 5 ~ 7 minutes with press, obtain standard test piece;
Afterwards, by cooling the standard test piece through over cure more than 16 hours, and test its tensile strength, tensile yield, shore hardness and resistance to white oil performance.
Afterwards, with 18 cun of mills, rubber unvulcanizate is made to the work in-process film that 8 ~ 12mm is thick;
Afterwards, with slitting shear machine, work in-process film is cut into strip.
Finally, use molded vulcanization forming machine, at the temperature of 175 ~ 180 degrees Celsius, mold pressing 6 ~ 8 minutes, obtains required rubber.
Take such scheme, have the following advantages:
As can be seen from the above scheme, because rubber of the present invention is surely to stretch with butadiene acrylonitrile rubber, zinc oxide, stearic acid, anti-old paraffin, promotor, sulphur, high abrasion furnace black(HAF), uncontamination are low that the raw material such as semi-reinforcing furnace black and dibutyl phthalate is mixing to be formed, in raw material, do not contain coumarone indene resin, thereby the rubber foaming phenomenon of having avoided coumarone indene resin not exclusively to melt and to cause occurs, make the rubber product quality produced better.
Again due to the present invention with in slowly acting accelerator vulkacit D replaced the quick acting accelerator tetramethyl-thiuram disulfide in background technology, make the heat-resisting tear strength of rubber made high.Manufacture the dop of sewing machine control panel with this rubber, the not easy fracture of neck place of dop when the demoulding, the qualification rate of product is higher.Because the heat-resisting tear strength of the rubber of making is high, when inspection, do not need the neck of breaking each product into two with one's hands to test, can save a large amount of manpowers and time, thereby improve production efficiency.
Embodiment
Below in conjunction with embodiment, the present invention is described in further details:
Embodiment mono-
Choose the anti-aging agent, 0.4 weight part, paraffin, the promotor of 0.8 weight part, the sulphur of 1.8 weight parts, the high abrasion furnace black(HAF) of 23 weight parts, the low dibutyl phthalate of surely stretching semi-reinforcing furnace black and 45 weight parts of uncontamination of 40 weight parts of stearic acid, 1.3 weight parts of zinc oxide, 0.8 weight part of butadiene acrylonitrile rubber, 4.5 weight parts of 95 weight parts.Wherein: described anti-aging agent is with 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer and N-sec.-propyl-N '-diphenyl-para-phenylene diamine, according to 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer: the part by weight of N-sec.-propyl-N '-diphenyl-para-phenylene diamine=2:1 mixes; Described promotor is with dibenzothiazyl disulfide and vulkacit D, mixes according to the part by weight of dibenzothiazyl disulfide: vulkacit D=5:3.5.
First paracril is cut into fragment and weighs up weight, and drop in Banbury mixer, 55 seconds of banburying.
Then, zinc oxide, stearic acid, anti-aging agent, paraffin, promotor are added in Banbury mixer to 55 seconds of banburying.
Afterwards, add high abrasion furnace black(HAF), low semi-reinforcing furnace black and the dibutyl phthalate surely stretched of uncontamination, in 55 seconds of kneading, obtain blend glue stuff.
Afterwards, banburying chamber's temperature is risen to 120 degree, automatically blend glue stuff is entered by setup program in 22 cun of mills, under the roll spacing of 3mm, thin-pass three times.
Afterwards, blend glue stuff is carried out to cooling, cooling, make its temperature be down to 89 degrees Celsius.
Afterwards, cooled blend glue stuff is dropped in 24 cun of mills, and add sulphur, under the roll spacing of 1mm, thin-pass three times, obtains rubber unvulcanizate.
Afterwards, become instrument with sulphur, at the temperature of 170 degrees Celsius, vulcanize 78 minutes, carry out sulphur and become test.
Afterwards, under 170 degrees Celsius, vulcanize 5 minutes with press, obtain standard test piece;
Afterwards, by cooling the standard test piece through over cure more than 16 hours, and test its tensile strength, tensile yield, shore hardness and resistance to white oil performance.
Afterwards, with 18 cun of mills, rubber unvulcanizate is made to the work in-process film that 8mm is thick;
Afterwards, with slitting shear machine, work in-process film is cut into strip.
Finally, use molded vulcanization forming machine, at the temperature of 175 degrees Celsius, mold pressing 6 minutes, obtains required rubber.
Embodiment bis-
Choose the anti-aging agent, 0.5 weight part, paraffin, the promotor of 0.85 weight part, the sulphur of 2 weight parts, the high abrasion furnace black(HAF) of 25 weight parts, the low dibutyl phthalate of surely stretching semi-reinforcing furnace black and 50 weight parts of uncontamination of 45 weight parts of stearic acid, 1.5 weight parts of zinc oxide, 1 weight part of butadiene acrylonitrile rubber, 5 weight parts of 100 weight parts.Wherein: described anti-aging agent is with 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer and N-sec.-propyl-N '-diphenyl-para-phenylene diamine, according to 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer: the part by weight of N-sec.-propyl-N '-diphenyl-para-phenylene diamine=2:1 mixes; Described promotor is with dibenzothiazyl disulfide and vulkacit D, mixes according to the part by weight of dibenzothiazyl disulfide: vulkacit D=5:3.5.
First paracril is cut into fragment and weighs up weight, and drop in Banbury mixer, 60 seconds of banburying.
Then, zinc oxide, stearic acid, anti-aging agent, paraffin, promotor are added in Banbury mixer to 60 seconds of banburying.
Afterwards, add high abrasion furnace black(HAF), low semi-reinforcing furnace black and the dibutyl phthalate surely stretched of uncontamination, in 60 seconds of kneading, obtain blend glue stuff.
Afterwards, banburying chamber's temperature is risen to 120 degree, automatically blend glue stuff is entered by setup program in 22 cun of mills, under the roll spacing of 4mm, thin-pass three times.
Afterwards, blend glue stuff is carried out to cooling, cooling, make its temperature be down to 88 degrees Celsius.
Afterwards, cooled blend glue stuff is dropped in 24 cun of mills, and add sulphur, under the roll spacing of 1.5mm, thin-pass three times, obtains rubber unvulcanizate.
Afterwards, become instrument with sulphur, at the temperature of 175 degrees Celsius, vulcanize 8 minutes, carry out sulphur and become test.
Afterwards, under 175 degrees Celsius, vulcanize 8 minutes with press, obtain standard test piece.
Afterwards, by cooling the standard test piece through over cure more than 16 hours, and test its tensile strength, tensile yield, shore hardness and resistance to white oil performance.
Afterwards, with 18 cun of mills, rubber unvulcanizate is made to the work in-process film that 10mm is thick.
Afterwards, with slitting shear machine, work in-process film is cut into strip.
Finally, use molded vulcanization forming machine, at the temperature of 175 degrees Celsius, mold pressing 7 minutes, obtains required rubber.
Embodiment tri-
Choose the anti-aging agent, 0.6 weight part, paraffin, the promotor of 0.9 weight part, the sulphur of 2.2 weight parts, the high abrasion furnace black(HAF) of 27 weight parts, the low dibutyl phthalate of surely stretching semi-reinforcing furnace black and 55 weight parts of uncontamination of 50 weight parts of stearic acid, 1.7 weight parts of zinc oxide, 1.2 weight parts of butadiene acrylonitrile rubber, 5.5 weight parts of 105 weight parts.Wherein: described anti-aging agent is with 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer and N-sec.-propyl-N '-diphenyl-para-phenylene diamine, according to 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer: the part by weight of N-sec.-propyl-N '-diphenyl-para-phenylene diamine=2:1 mixes; Described promotor is with dibenzothiazyl disulfide and vulkacit D, mixes according to the part by weight of dibenzothiazyl disulfide: vulkacit D=5:3.5.
First paracril is cut into fragment and weighs up weight, and drop in Banbury mixer, 65 seconds of banburying.
Then, zinc oxide, stearic acid, anti-aging agent, paraffin, promotor are added in Banbury mixer to 65 seconds of banburying.
Afterwards, add high abrasion furnace black(HAF), low semi-reinforcing furnace black and the dibutyl phthalate surely stretched of uncontamination, in 65 seconds of kneading, obtain blend glue stuff.
Afterwards, banburying chamber's temperature is risen to 120 degree, automatically blend glue stuff is entered by setup program in 22 cun of mills, under the roll spacing of 5mm, thin-pass three times.
Afterwards, blend glue stuff is carried out to cooling, cooling, make its temperature be down to 87 degrees Celsius.
Afterwards, cooled blend glue stuff is dropped in 24 cun of mills, and add sulphur, under the roll spacing of 2mm, thin-pass three times, obtains rubber unvulcanizate.
Afterwards, become instrument with sulphur, at the temperature of 180 degrees Celsius, vulcanize 9 minutes, carry out sulphur and become test.
Afterwards, under 180 degrees Celsius, vulcanize 7 minutes with press, obtain standard test piece.
Afterwards, by cooling the standard test piece through over cure more than 16 hours, and test its tensile strength, tensile yield, shore hardness and resistance to white oil performance.
Afterwards, with 18 cun of mills, rubber unvulcanizate is made to the work in-process film that 12mm is thick;
Afterwards, with slitting shear machine, work in-process film is cut into strip.
Finally, use molded vulcanization forming machine, at the temperature of 180 degrees Celsius, mold pressing 8 minutes, obtains required rubber.
Claims (1)
1. a rubber, is characterized in that comprising the raw material of following parts by weight:
95 ~ 105 parts of paracrils;
4.5 ~ 5.5 parts, zinc oxide;
0.8 ~ 1.2 part of stearic acid;
1.3 ~ 1.7 parts, anti-aging agent;
0.4 ~ 0.6 part, paraffin;
2 ~ 2.3 parts of promotor;
1.8 ~ 2.2 parts, sulphur;
23 ~ 27 parts of high abrasion furnace black(HAF);
Low 40 ~ 50 parts of the semi-reinforcing furnace black of surely stretching of uncontamination;
45 ~ 55 parts of dibutyl phthalates;
Described anti-aging agent is with 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer and N-sec.-propyl-N '-diphenyl-para-phenylene diamine, according to 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer: the part by weight of N-sec.-propyl-N '-diphenyl-para-phenylene diamine=2:1 mixes; Described promotor is with dibenzothiazyl disulfide and vulkacit D, mixes according to the part by weight of dibenzothiazyl disulfide: vulkacit D=5:3.5;
The method of producing described rubber comprises the following steps successively:
First paracril is cut into fragment and weighs up weight, and drop in Banbury mixer, 55 ~ 65 seconds of banburying;
Then, zinc oxide, stearic acid, anti-aging agent, paraffin, promotor are added in Banbury mixer to 55 ~ 65 seconds of banburying;
Afterwards, add high abrasion furnace black(HAF), low semi-reinforcing furnace black and the dibutyl phthalate surely stretched of uncontamination, in 55 ~ 65 seconds of kneading, obtain blend glue stuff;
Afterwards, banburying chamber's temperature is risen to 120 degree, automatically blend glue stuff is entered by setup program in 22 cun of mills, under the roll spacing of 3 ~ 5mm, thin-pass three times;
Afterwards, blend glue stuff is carried out to cooling, cooling, its temperature is down to below 90 degrees Celsius;
Afterwards, cooled blend glue stuff is dropped in 24 cun of mills, and add sulphur, under the roll spacing of 1 ~ 2mm, thin-pass three times, obtains rubber unvulcanizate;
Afterwards, become instrument with sulphur, at the temperature of 170 ~ 180 degrees Celsius, vulcanize 7 ~ 9 minutes, carry out sulphur and become test;
Afterwards, under 170 ~ 180 degrees Celsius, vulcanize 5 ~ 7 minutes with press, obtain standard test piece;
Afterwards, by cooling the standard test piece through over cure more than 16 hours, and test its tensile strength, tensile yield, shore hardness and resistance to white oil performance;
Afterwards, with 18 cun of mills, rubber unvulcanizate is made to the work in-process film that 8 ~ 12mm is thick;
Afterwards, with slitting shear machine, work in-process film is cut into strip;
Finally, use molded vulcanization forming machine, at the temperature of 175 ~ 180 degrees Celsius, mold pressing 6 ~ 8 minutes, obtains required rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310030537.8A CN103059361B (en) | 2013-01-28 | 2013-01-28 | Rubber and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310030537.8A CN103059361B (en) | 2013-01-28 | 2013-01-28 | Rubber and production method thereof |
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| CN103059361A CN103059361A (en) | 2013-04-24 |
| CN103059361B true CN103059361B (en) | 2014-08-13 |
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| CN106633243A (en) * | 2016-12-23 | 2017-05-10 | 太仓冠联高分子材料有限公司 | Nitrile butadiene rubber for turning and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796293A (en) * | 2012-08-16 | 2012-11-28 | 中橡集团曙光橡胶工业研究设计院 | High performance rubber sheath rubber material |
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| JP5094128B2 (en) * | 2007-01-10 | 2012-12-12 | 株式会社ブリヂストン | Rubber composition for tire tread and pneumatic tire using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102796293A (en) * | 2012-08-16 | 2012-11-28 | 中橡集团曙光橡胶工业研究设计院 | High performance rubber sheath rubber material |
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| JP特开2008-169280A 2008.07.24 |
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Denomination of invention: Rubber and its production method Effective date of registration: 20210707 Granted publication date: 20140813 Pledgee: Bank of China Limited by Share Ltd. Wuxi Huishan branch Pledgor: WUXI PERUN RUBBER & PLASTIC Co.,Ltd. Registration number: Y2021980005823 |
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Date of cancellation: 20220901 Granted publication date: 20140813 Pledgee: Bank of China Limited by Share Ltd. Wuxi Huishan branch Pledgor: WUXI PERUN RUBBER & PLASTIC Co.,Ltd. Registration number: Y2021980005823 |
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Address after: 214000 No.1 Xichang Road, Pailou Village, Yanqiao Street, Huishan District, Wuxi City, Jiangsu Province Patentee after: Wuxi Puye Polymer Materials Technology Co.,Ltd. Address before: No. 1, Xichang Road, Xizhang Industrial Park, Huishan District, Wuxi City, Jiangsu Province, 214171 Patentee before: WUXI PERUN RUBBER & PLASTIC Co.,Ltd. |
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