CN1783359A - Screening material for medium voltage rubber insulation cable - Google Patents
Screening material for medium voltage rubber insulation cable Download PDFInfo
- Publication number
- CN1783359A CN1783359A CN 200410089024 CN200410089024A CN1783359A CN 1783359 A CN1783359 A CN 1783359A CN 200410089024 CN200410089024 CN 200410089024 CN 200410089024 A CN200410089024 A CN 200410089024A CN 1783359 A CN1783359 A CN 1783359A
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- cable
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- rubber
- shielding material
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- 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.)
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- 239000000463 material Substances 0.000 title claims abstract description 31
- 229920001971 elastomer Polymers 0.000 title claims abstract 5
- 238000009413 insulation Methods 0.000 title abstract description 10
- 238000012216 screening Methods 0.000 title 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract 2
- 229920002943 EPDM rubber Polymers 0.000 claims description 15
- 239000001993 wax Substances 0.000 claims description 12
- 230000003712 anti-aging effect Effects 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000007822 coupling agent Substances 0.000 claims description 11
- 150000001451 organic peroxides Chemical class 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 10
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 7
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical group CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical group C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 claims 2
- GYLXWHLPLTVIOP-UHFFFAOYSA-N ethenyl(2,2,2-trimethoxyethoxy)silane Chemical compound COC(OC)(OC)CO[SiH2]C=C GYLXWHLPLTVIOP-UHFFFAOYSA-N 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 10
- 210000000056 organ Anatomy 0.000 abstract 1
- 239000012774 insulation material Substances 0.000 description 21
- 239000003921 oil Substances 0.000 description 12
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 9
- 244000286663 Ficus elastica Species 0.000 description 8
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 8
- 230000032683 aging Effects 0.000 description 8
- 229920001195 polyisoprene Polymers 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005469 granulation Methods 0.000 description 5
- 230000003179 granulation Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- WGRZHLPEQDVPET-UHFFFAOYSA-N 2-methoxyethoxysilane Chemical compound COCCO[SiH3] WGRZHLPEQDVPET-UHFFFAOYSA-N 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000013007 heat curing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
This invention relates to a shield material used in high soft medium pressure rubber insulation cables in the following proportion of mass: EPT rubber: 100, conductive carbon black: 50-100, age resister: 1-3, organ peroxidate: 2-4, coupler: 1-2, wax: 2-8 and processed oil: 5-20, which can solve the technological problem of preparing a cable with the bending diameter six times of the outer diameter.
Description
Technical field
The present invention relates to insulation and conducing composite material technical field, refer to press in a kind of highly-flexible India-rubber cable especially with shielding material.
Background technology
In to press India-rubber cable be a product that generally uses, the regulation of relevant middle pressure India-rubber cable is all arranged as IEC60502 and IEC92-354 etc.In the wide range that its uses, land, water, civilian, military nothing can't be obtained.Ethylene-propylene rubber has wide serviceability temperature, can still keep performance at 150 ℃, and still pliable and tough under-40 ℃, temperature resistant grade is generally 105 ℃, and emergency is 140 ℃, this means to improve 7～8% ampacity.Ethylene-propylene rubber has excellent electric performance, and its dielectric constant and dielectric loss angle tangent are all very little, and outstanding water-resistance and corona-resistance property are arranged, stable anti-electric pulse intensity.The thermal expansion of ethylene-propylene rubber is low, can prevent that insulating barrier separation, joint or end retraction, the neutral line from embedding insulation, improves the matching of cable and preparation joint.Ethylene-propylene rubber has the excellent flexibility energy, makes cable have very little bending radius, and installation, joint and end-blocking are easier, and the defective patience is higher.So epr cable compound is the trend of power cable development.
The used ethylene-propylene rubber type of ethylene-propylene rubber cable has two kinds in common ethylene-propylene rubber and high-modulus ethylene-propylene rubber, and they have different physical properties and electric property regulation, the cable that moves or what have that the soft cable that requires adopts is exactly common ethylene-propylene rubber.Some special occasions have higher soft requirement to cable, and as magnetic suspension long stator cable etc., this just needs highly-flexible performance Insulation Material and shielding material.
Present domestic medium and high voltage cable mainly adopts the crosslinkable polyethylene Insulation Material, as: Chinese patent 02106022.3 stable middle voltage and high-voltage cable insulation composition, relate to a kind of polyethylene composition as the electric wire and cable insulating material, it has improved anti-incipient scorch, composition comprises: (a) polyethylene, (b) under atmospheric pressure fusing point is lower than 50 ℃ incipient scorch inhibitor and (c) organic peroxide.But this Insulation Material is because hardness own is big, and the cable bending property of making is bad, and the cable bending diameter is at least 20 times of outside diameters of cable.Satisfy the requirement of highly-flexible cable, as bending diameter is 6 times of outside diameters of cable, needs to adopt new Insulation Material, simultaneously, because medium and high voltage cable must adopt semiconductive shielding layer, so need to propose a kind of new shielding material to satisfy the actual needs of preparation highly-flexible cable.
Summary of the invention
In order to overcome the technical problem that prior art can not prepare the highly-flexible midium voltage cable, especially solving the preparation bending diameter is the technical problem of 6 times of outside diameters of cable, and the present invention proposes to press in a kind of highly-flexible India-rubber cable with shielding material.Calculate with the constituent mass proportioning, its concrete scheme is as follows: 100 parts of ethylene propylene diene rubbers, 50～100 parts of conductive blacks, 1～3 part of antiaging agent, 2～4 parts of organic peroxides, 1～2 part of coupling agent, 2～8 parts in wax, 5～20 parts of processing oils.
The preparation technology that the present invention shields material is relevant existing processes such as banburying or kneading, dispersion granulation or rolling page or leaf.Because the present invention shields material and is applied as the master with midium voltage cable, so the production environment of corresponding product needed cleaning could guarantee the electrical property of product fine.Preferably adopt ventilation equipment to send into cleaned air passes, keep the malleation of workshop.Concrete operations are seen as follows: 1. banburying, kneading, open the refining or other process for dispersing, mix as long as can guarantee each component.2. granulation or rolling page or leaf shield material and adopt single screw extrusion machine or miscellaneous equipment to make the particle of suitable size; Also can adopt page machine of rolling over or miscellaneous equipment calendering to cut into the suitable adhesive tape of size.3. no matter packing is adhesive tape or micelle, all will adopt moistureproof dustproof packing, prevents from storing, polluting when transporting.
Performance of the present invention is:
| Pilot project | The shielding material |
| Tensile strength, MPa | 7～15 |
| Elongation at break, MPa | 400～700 |
| Specific insulation, Ω m | 0.1～50 |
| Shore A hardness, HA | 60～80 |
| Tensile strength rate of change after the 135 ℃ * 168h heat ageing, % | -15～+15 |
| Elongation at break rate of change after the 135 ℃ * 168h heat ageing, % | -15～+15 |
Embodiment
The present invention selects for use Ethylene Propylene Terpolymer (EPDM) rubber composition of soft, highly-flexible as Insulation Material, can reach the requirement of cable highly-flexible, and the ethylene propylene diene rubber good electric property, can satisfy the requirement of midium voltage cable fully.
Embodiment 1: Insulation Material and shielding material raw material components are as follows:
| Material | Mass fraction | |
| Insulation Material | The shielding material | |
| Ethylene propylene diene rubber | 100 | 100 |
| Conductive black | 0 | 40 |
| Calcinated argil | 50 | 0 |
| Antiaging agent | 1.5 | 1.5 |
| Organic peroxide | 2.7 | 2.7 |
| Coupling agent | 1 | 1 |
| Wax | 6 | 6 |
| Processing oil | 5 | 15 |
Wherein ethylene propylene diene rubber (EPDM) is the product that adopts Dutch States Mines (DSM), and the trade mark is Keltan2470.Conductive black is the VXC-72 that Cabot Co.,Ltd (CABOT) produces.Calcinated argil is calcining and the surface treatment potter's clay Translink37 that An Ge company (ENGELHARD) produces.Antiaging agent is 2,2,4-trimethyl-1,2-dihyaroquinoline (RD).Organic peroxide is that cumyl peroxide (DCP) coupling agent is vinyl three (methoxyethoxy) silane (A-172).Wax is paraffin.Processing oil is the SUNPAR2280 that solar oil company (SUNOCO) produces.
The preparation method is as follows: earlier EPDM rubber and antiaging agent are dropped into banbury, add calcinated argil (Insulation Material) or conductive black (shielding material) behind the banburying 3min, add wax and processing oil again, continue to add coupling agent, discharging behind the banburying 1min behind the banburying 2min.After playing three triangle bags in the two roller mills, add organic peroxide, roll over page or leaf or granulation after the thin-pass 8 times.
Be pressed into after the test piece as follows with Insulation Material that processes and shielding material through recording its performance after the 160 ℃ * 40min heat cure:
| Pilot project | Result of the test | |
| Insulation Material | The shielding material | |
| Tensile strength, MPa | 7.1 | 13.5 |
| Elongation at break, MPa | 360 | 660 |
| Specific insulation, Ω m | 5.5×10 14 | 18 |
| Shore A hardness, H A | 62 | 65 |
| Tensile strength rate of change after the 135 ℃ * 168h heat ageing, % | 0 | +7 |
| Elongation at break rate of change after the 135 ℃ * 168h heat ageing, % | -14 | -5 |
Embodiment 2: Insulation Material and shielding material raw material components are as follows:
| Material | Mass fraction | |
| Insulation Material | The shielding material | |
| Ethylene propylene diene rubber | 100 | 100 |
| Conductive black | 0 | 60 |
| Calcinated argil | 60 | 0 |
| Antiaging agent | 1.5 | 1.5 |
| Organic peroxide | 2.7 | 2.7 |
| Coupling agent | 1 | 1 |
| Wax | 8 | 7 |
| Processing oil | 8 | 20 |
Wherein ethylene propylene diene rubber (EPDM) is the product that adopts JSR company, and the trade mark is EP21.Conductive black is the BP2000 that Cabot Co.,Ltd (CABOT) produces.Calcinated argil is calcining and the surface treatment potter's clay Translink77 that An Ge company (ENGELHARD) produces.Antiaging agent is 1,2-mercaptobenzimidazole (MB).Organic peroxide is cumyl peroxide (DCP).Coupling agent is vinyltrimethoxy silane (A-171).Wax is Tissuemat E.Processing oil is the SUNPAR2280 that solar oil company (SUNOCO) produces.
The preparation method is as follows: earlier EPDM rubber and antiaging agent are dropped into two roller mills, add calcinated argil (Insulation Material) or conductive black (shielding material) behind the bag roller, add wax and processing oil again, powder is eaten up the back and is added coupling agent, add organic peroxide again, roll over page or leaf or granulation after the thin-pass 8 times.
Be pressed into after the test piece as follows with Insulation Material that processes and shielding material through recording its performance after the 160 ℃ * 40min heat cure:
| Pilot project | Result of the test | |
| Insulation Material | The shielding material | |
| Tensile strength, MPa | 7.4 | 9.8 |
| Elongation at break, MPa | 436 | 582 |
| Specific insulation, Ω m | 3.1×10 14 | 1.23 |
| Shore A hardness, H A | 62 | 71 |
| Tensile strength rate of change after the 135 ℃ * 168h heat ageing, % | -4 | +10 |
| Elongation at break rate of change after the 135 ℃ * 168h heat ageing, % | -15 | -2 |
Embodiment 3: Insulation Material and shielding material raw material components are as follows:
| Material | Mass fraction | |
| Insulation Material | The shielding material | |
| Ethylene propylene diene rubber | 100 | 100 |
| Conductive black | 0 | 70 |
| Calcinated argil | 70 | 0 |
| Antiaging agent | 2 | 2 |
| Organic peroxide | 2.7 | 2.7 |
| Coupling agent | 1 | 1 |
| Wax | 8 | 8 |
| Processing oil | 8 | 22 |
Wherein ethylene propylene diene rubber (EPDM) is the product that adopts ExxonMobil company, and the trade mark is Vistalon1703P.Conductive black is the N220 of Tianjin Carbon Black Factory.Calcinated argil is homemade calcining and surface treatment potter's clay Glc.Antiaging agent is 1,2-mercaptobenzimidazole (MB).Organic peroxide is that cumyl peroxide (DCP) coupling agent is vinyl three (methoxyethoxy) silane (A-172).Wax is paraffin.Processing oil is the SUNPAR2280 that solar oil company (SUNOCO) produces.
The preparation method is as follows: the recipe ingredient branch is assembled in the corresponding hopper, adopts the diffusing granulation of continuous mixing dual-screw pelletizer component.
Be pressed into after the test piece as follows with Insulation Material that processes and shielding material through recording its performance after the 160 ℃ * 40min heat cure:
| Pilot project | Result of the test | |
| Insulation Material | The shielding material | |
| Tensile strength, MPa | 10.0 | 8.9 |
| Elongation at break, MPa | 434 | 474 |
| Specific insulation, Ω m | 1.7×10 14 | 0.61 |
| Shore A hardness, H A | 64 | 70 |
| Tensile strength rate of change after the 135 ℃ * 168h heat ageing, % | +15 | +8 |
| Elongation at break rate of change after the 135 ℃ * 168h heat ageing, % | 0 | -9 |
Technique effect of the present invention:
10/17.5 (20) the kV India-rubber cable of producing with Insulation Material of the present invention and shielding material satisfies related request the GB/T 12706.2 (adopting by equation IEC 60502-2) " rated voltage 1kV (Um=1.2kV) arrives extruding insulation power cable and the annex part 2 thereof of 30kV (Um=36kV): the cable of specified cable from 1kV (Um=1.2kV) to 30kV (Um=36kV) " fully.Need to prove that especially cable minimum bend diameter of the present invention can reach 1.5D (D is the outside diameter of cable).
10/17.5 (20) the kV India-rubber cable of producing with Insulation Material of the present invention and shielding material is 1.5D bending front and back 24kV partial discharge test results at bending diameter:
| Partial discharge | |
| Before the bending | 2.5pC |
| After the bending | 3.5pC |
And the single-core cable minimum bend diameter of regulation is 24D among the GB/T 12706.2, and partial discharge requires to be not more than 20pC.As seen the India-rubber cable that adopts the present invention to produce is very soft, and crooked back electrical property is still good.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100890245A CN100514507C (en) | 2004-12-02 | 2004-12-02 | Screening material for medium voltage rubber insulation cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100890245A CN100514507C (en) | 2004-12-02 | 2004-12-02 | Screening material for medium voltage rubber insulation cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1783359A true CN1783359A (en) | 2006-06-07 |
| CN100514507C CN100514507C (en) | 2009-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100890245A Expired - Lifetime CN100514507C (en) | 2004-12-02 | 2004-12-02 | Screening material for medium voltage rubber insulation cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100514507C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221836B (en) * | 2007-12-21 | 2010-12-29 | 江苏中煤电缆股份有限公司 | Low temperature resistant anti-crack rubber sleeve flexible cable used for wind power generation |
| CN102382377A (en) * | 2011-09-29 | 2012-03-21 | 江苏亨通电力电缆有限公司 | Medium-voltage ethylene propylene rubber insulating material and preparation method thereof |
| CN102838801A (en) * | 2012-09-27 | 2012-12-26 | 四川明星电缆股份有限公司 | Semiconductor shielding cable material |
| CN102977289A (en) * | 2012-11-05 | 2013-03-20 | 安徽金桥电缆有限公司 | City track EPDM (ethylene propylene diene monomer) medium-voltage insulation material and its preparation method |
| CN103819820A (en) * | 2014-02-10 | 2014-05-28 | 上海蓝昊电气江苏有限公司 | Mine cable rubber sheath conductor shielding material |
| CN104356519A (en) * | 2014-11-11 | 2015-02-18 | 无锡市明珠电缆有限公司 | Halogen-free low-smoke environment-friendly medium-pressure mining cable conductor shielding glue and preparation method thereof |
| CN105367918A (en) * | 2015-12-04 | 2016-03-02 | 四川明星电缆股份有限公司 | Halogen-free high-temperature-resistant conductor shield material and preparation method thereof |
| CN107868348A (en) * | 2017-12-03 | 2018-04-03 | 深圳市罗庚电气有限公司 | A kind of high flame resistance conduction ethylene propylene diene rubber and preparation method thereof |
| CN109438857A (en) * | 2018-09-30 | 2019-03-08 | 远东电缆有限公司 | EP rubbers semiconductive external shield material that can be effectively crosslinked and preparation method thereof |
-
2004
- 2004-12-02 CN CNB2004100890245A patent/CN100514507C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221836B (en) * | 2007-12-21 | 2010-12-29 | 江苏中煤电缆股份有限公司 | Low temperature resistant anti-crack rubber sleeve flexible cable used for wind power generation |
| CN102382377A (en) * | 2011-09-29 | 2012-03-21 | 江苏亨通电力电缆有限公司 | Medium-voltage ethylene propylene rubber insulating material and preparation method thereof |
| CN102838801A (en) * | 2012-09-27 | 2012-12-26 | 四川明星电缆股份有限公司 | Semiconductor shielding cable material |
| CN102838801B (en) * | 2012-09-27 | 2014-06-25 | 四川明星电缆股份有限公司 | Semiconductor shielding cable material |
| CN102977289A (en) * | 2012-11-05 | 2013-03-20 | 安徽金桥电缆有限公司 | City track EPDM (ethylene propylene diene monomer) medium-voltage insulation material and its preparation method |
| CN103819820A (en) * | 2014-02-10 | 2014-05-28 | 上海蓝昊电气江苏有限公司 | Mine cable rubber sheath conductor shielding material |
| CN104356519A (en) * | 2014-11-11 | 2015-02-18 | 无锡市明珠电缆有限公司 | Halogen-free low-smoke environment-friendly medium-pressure mining cable conductor shielding glue and preparation method thereof |
| CN105367918A (en) * | 2015-12-04 | 2016-03-02 | 四川明星电缆股份有限公司 | Halogen-free high-temperature-resistant conductor shield material and preparation method thereof |
| CN107868348A (en) * | 2017-12-03 | 2018-04-03 | 深圳市罗庚电气有限公司 | A kind of high flame resistance conduction ethylene propylene diene rubber and preparation method thereof |
| CN109438857A (en) * | 2018-09-30 | 2019-03-08 | 远东电缆有限公司 | EP rubbers semiconductive external shield material that can be effectively crosslinked and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100514507C (en) | 2009-07-15 |
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Application publication date: 20060607 Assignee: JIANGSU SANJIAOZHOU PLASTIC Co.,Ltd. Assignor: Shanghai Electric Cable Research Institute Contract record no.: 2010320000352 Denomination of invention: Screening material for medium voltage rubber insulation cable Granted publication date: 20090715 License type: Exclusive License Record date: 20100412 |
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Address after: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee after: SHANGHAI ELECTRIC CABLE RESEARCH INSTITUTE Co.,Ltd. Address before: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee before: SHANGHAI ELECTRIC CABLE Research Institute |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201208 Address after: 201802 Shanghai City, Jiading District Nanxiang Town Yongle Village No. 271 Patentee after: Shanghai Kaibo cable special material Co.,Ltd. Address before: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee before: SHANGHAI ELECTRIC CABLE RESEARCH INSTITUTE Co.,Ltd. |
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Granted publication date: 20090715 |