CN1157459C - High-hydroscopicity expanding water-blocking paste for optical cable and its prepn - Google Patents
High-hydroscopicity expanding water-blocking paste for optical cable and its prepn Download PDFInfo
- Publication number
- CN1157459C CN1157459C CNB011382228A CN01138222A CN1157459C CN 1157459 C CN1157459 C CN 1157459C CN B011382228 A CNB011382228 A CN B011382228A CN 01138222 A CN01138222 A CN 01138222A CN 1157459 C CN1157459 C CN 1157459C
- Authority
- CN
- China
- Prior art keywords
- oil
- water
- paste
- silicon dioxide
- polymer
- 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.)
- Expired - Lifetime
Links
Landscapes
- Insulated Conductors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to high-hydroscopicity expanding water-blocking paste for optical cables and a preparation method thereof. The water-blocking paste comprises synthetic polyolefin oil, synthetic aromatic oil, gas-phase silicon dioxide, a macromolecule oil-repellent agent, a macromolecule water-absorbing expansion agent and an antioxidant, wherein the synthetic polyolefin oil and the synthetic aromatic oil are used as base oil and account for more than 70 wt% in a formula; the macromolecule water-absorbing expansion agent accounts for 5 to 10 wt%; the water absorption rate of the water-blocking paste is greater or equal to 1000%. The preparation method comprises the following steps: firstly, the two synthetic oil are mixed according to a preset proportion and stirred and heated to a temperature of 180 DEG C; volatile matters and moisture are removed so as to obtain an oil mixture; the macromolecule oil-repellent agent is added in the oil mixture and stirred and heated to a temperature to 200 DEG C; after solids are completely dissolved, the oil mixture is cooled to below a temperature of 60 DEG C, and the antioxidant is added to be mixed and dissolved; then, after the gas-phase silicon dioxide and the macromolecule water-absorbing expansion agent are added and stirred evenly, grinding, vacuumizing, air bubble removal and filtration are carried out so as to obtain a product of the water-blocking paste. The water-blocking paste is applied to the filling of various optical cables and has stable physical and chemical properties and favorable processing properties.
Description
Technical field
The present invention relates to fill sealing waterproof paste and preparation thereof, particularly optical cable high water adsorption swelling waterproof cream and preparation thereof.
Background technology
The optical cable filling paste is to produce the indispensable important materials of optical cable at present both at home and abroad; it is filled in the gapped interior water-tight effect that plays of institute between optical cable core and the sheath; protection optical fiber is not subjected to " erosion " of water molecules in the environment; prevent that water molecules from infiltrating optical cable; freeze damage optical cable under the low temperature; prolong optical cable work-ing life (20～40 years), keep the stability and the reliability of transmission information in the optical cable life-time service process.
The optical cable filling paste has experienced by hot-melting type to the thixotropic developmental stage.The hot-melting type filling paste needs heat fused (90 ℃) back to fill use, both wastes energy drippage contaminate environment when easily filling again.And make optical fiber stand pyrolytic damage, influence transmission performance.The thixotropic filling paste adds thixotropic agent, deflocculant, oxidation inhibitor etc. by mineral oil or synthetic oil and makes the semi-solid state paste, has characteristic thinning under shear action, can fill with pump delivery at normal temperatures, fill the back and in optical cable, keep stagnant condition, have good waterproof sealing performance.But do the time spent when optical cable is subjected to lateral stress, can produce thixotropic fluidity again, it is residual to eliminate stress automatically, makes optical fiber avoid the little curved transmission loss that causes of stress to increase.So thixotropic filling paste (claiming cold filling paste again) has the incomparable advantage of hot-melting type filling paste.Existing thixotropic filling paste replaces the hot-melting type filling paste fully, is widely used in optical cable production.
General thixotropic filling paste is the hydrophobicity water-tight, fills and the strong advantage of water-repellancy though have under the normal temperature, and is very strict to the fill process requirement, needs accurate flow adjustment during filling, fills to reach 100%.Filling is lower than 100% may stay the space in optical cable, form penetrating passage, and being higher than 100% can influence next step metal longitudinal bag lap joint process, even causes the cable jacket deformation projections.In order to solve the above-mentioned shortcoming that such filling paste exists, many people are devoted to research and develop expandable thixotropic filling paste both at home and abroad.But the optical cable that U.S. Waterguard company has released a kind of water-swelling is with the factice for filling that blocks water (abbreviation waterproof paste), its product type has P-60 to be used for the optical cable filling, P-90 is used for telecommunication cable and fills, and set up factories at Beijing individual proprietorship and to set up Ward (Beijing) company and produce two kinds of products, provide domestic optical cable producer to use, be subjected to the user and welcome.This waterproof paste is made base oil with refining mineral oil, and fumed silica (white carbon black) is made thixotropic agent, and interpolation polymer water uptake expansion powder etc. is made.Both kept the advantage that general hydrophobicity thixotropic filling paste can be filled at normal temperatures, have again and fill the characteristic that water absorption, rapid expansion are met in the back, do not need 100% to fill during use, can block penetrating passage voluntarily, reach 100% block water, water resistance, simplify fill process greatly, improved the performance of product.But P-60, P-90 waterproof paste low-temperature performance, absorption speed, water-resisting ability and consistency are undesirable, and acid number is higher.
Summary of the invention
The purpose of this invention is to provide a kind of high-hydroscopicity expanding water-blocking paste for optical cable and preparation thereof.The low-temperature performance of this waterproof paste, absorption speed, water-resisting ability, consistency are better than existing waterproof paste, and acid number is low, and every technical indicator meets the requirements.Its production technique is feasible.
The high-hydroscopicity expanding water-blocking paste for optical cable of realizing the object of the invention contains synthesis of polyolefins oil, synthetic aromatic hydrocarbon oil, silicon dioxide powder, polymer presses down finish, agent of WZP polymer water uptake expansion and oxidation inhibitor composition, described synthesis of polyolefins oil is poly ﹠ Alpha ,-olefin oil or polyisobutylene oil, described synthetic aromatic hydrocarbon oil is polyoxyethylene alkylphenyl oil or polyalkylbenzene oil, described silicon dioxide powder is the silicon dioxide powder that combustion method is produced, described polymer water uptake expansion agent is the WZP polymer water uptake expansion agent that the Hubei Prov. Chemical Research Inst produces, described oxidation inhibitor is oxidation inhibitor 2,6-di-tert-butyl-4-methy phenol (antioxidant 264) or oxidation inhibitor 2,2-methylene-bis (4-methyl-6-tert butyl phenol) (oxidation inhibitor 2264), the weight proportion of its composition is: 10～40 parts of synthesis of polyolefins oil, 40～80 parts of synthetic aromatic hydrocarbon oil, 2～10 parts of silicon-dioxide, polymer presses down 1～5 part of finish, 5～10 parts of polymer water uptake expansion agent, 0.1～0.5 part in oxidation inhibitor.
Described polymer presses down finish: SB resin or SBS resin, EP resin.
Described synthesis of polyolefins oil is made base oil with synthetic aromatic hydrocarbon oil and account for weight 〉=70% in prescription.
The preparation process of high-hydroscopicity expanding water-blocking paste for optical cable of the present invention is:
1) synthesis of polyolefins oil and synthetic aromatic hydrocarbon oil are mixed, stir by preset proportion, be warming up to 180 ℃, residual volatile matter and moisture content are removed in underpressure distillation, get mixing oil A;
2) polymer of proportional is pressed down finish and adds among the mixing oil A, stir and be warming up to 200 ℃, solids is dissolved below the postcooling to 60 ℃ fully, transparent glue liquid B;
3) oxidation inhibitor with proportional adds in the glue liquid B, stirs, mixes, dissolves, and gets transparent glue C;
4) silicon dioxide powder and the agent of WZP polymer water uptake expansion with proportional adds among the glue C, after stirring, gets faint yellow paste D;
5) with paste D by grinding, homogenizing vacuumizes by being pumped into to stir down in the reactor, remove bubble after, pressurization down blowing by filtering, the finished product waterproof paste, barrelling sealing preservation.
The agent of agents useful for same WZP polymer water uptake expansion is the commercially available product that the Hubei Prov. Chemical Research Inst produces among the present invention, and other reagent is commercially available industrial goods, and it is imported raw material that silicon dioxide powder and polymer press down finish.
In the waterproof paste of the present invention, synthesis of polyolefins oil accounts for weight 〉=70% with synthetic aromatic hydrocarbon oil as base oil in prescription, is the most important raw material of preparation waterproof paste, and key propertys such as the low temperature of cream, flash-point, oxidation-resistance, liberation of hydrogen, consistency are had a direct impact.Silicon dioxide powder generates thixotropy paste with synthetic oil by physics chemical action as thixotropic agent, and performances such as its thixotropy, dropping point, acid number are had decisive role.The polymer water uptake expansion agent is a High hydrophilous resin, 300～500 times of inflatable its quality in suction back self, and the gel-strength height, to the absorbent time of mixture, indexs such as expansion multiplying power, gel-strength, block-water performance and acid number have a significant impact.Polymer presses down finish and improves thixotropic compounds stability.Reduce and divide oil, satisfy fill process and be strict with.Oxidation inhibitor, micro-adding can improve the oxidation-resistance of mixture, and prevents or reduce liberation of hydrogen.
Two kinds of synthetic oils are pressed different ratios and are mixed, and can obtain the different mixing oil of viscosity and make base oil, make the waterproof paste that makes that different rheological properties and yield strength be arranged, and satisfy different pad devices of optical cable manufacturer and processing requirement.Two kinds of oil mix and have not only kept the low advantage of synthetic aromatic hydrocarbon oil zero pour, and have improved sticking temperature variation characteristic.
Silicon dioxide powder is that aerosil is silicon dioxide powder, the particle diameter little (surpassing 200 orders) that combustion method is produced, and specific surface area is big, and acid number is low, and it is the most suitable to be used to make optical fiber (cable) stopping composition.Control add-on 5～6% can meet the requirements of penetration degree (25 ℃) 280～320 1/20mm.Can satisfy different user pad device and processing parameter conditional request.
In order to suppress branch oil, we add a kind of polymer and press down finish reduction branch oil, press down finish and have the microcosmic stalling characteristic, form inierpeneirating network structure by secondary valence bond and silicon-dioxide thixotropic agent, improved the affinity of thixotropic agent network greatly, thereby reduced the Stencil oil-dividing of waterproof paste oil molecule.
Polymer presses down the network that finish forms in the thixotropic agent network be the physical crosslinking structure, in silica particle surface, the secondary valence bond fracture also can take place under shearing action cause " depolymerization " and desorb (to thixotropic agent) effect, do not influence the flowability of oil molecule.
The agent of WZP polymer water uptake expansion is the commercially available industrial goods that the Hubei Prov. Chemical Research Inst produces, and it is little that it has a particle diameter, and absorption speed is fast, the expansion multiplying power height does not contain soda acid, and hydrolytic resistance is strong, advantages such as good electrical property satisfy the performance requriements for preparing the optical cable water-blocking filling paste.The technical specification of WZP polymer water uptake expansion agent is listed in table 1.
Optical cable water-blocking filling paste standard-required absorbent time (15g cream suction 10g water)≤12min, the customer requirements≤8min that has, water-intake rate 〉=1000%.The agent of general adding 6～8%WZP polymer water uptake expansion can be guaranteed water-intake rate 〉=1000%.
The water content of optical cable filling paste, acid number, oxidation-resistance and hydrogen-separating quantity all are regarded as the important technology index.Regulation cable water content≤0.1% of filling paste in the standard, acid number≤1mgKOH/g.This waterproof paste adopts synthetic oil to make base oil, through high temperature degreasing, processed, and drying agent drying, the thixotropic agent aerosil is an imported raw material, and its acid number and water-content all have strict restriction, and the agent of WZP polymer water uptake expansion does not contain soda acid.Start with from starting material, make these two indexs of mixture all can pass through standard-required.In the standard also the antioxidative stabilizer of regulation waterproof paste measure with oxidation induction period.Oxidation induction period 〉=the 20min of standard-required under 190 ℃, and liberation of hydrogen (80 ℃, 24h)≤0.05 μ l/g.This waterproof paste adopts synthetic oil to make base oil, the bromine valency is low, the unsaturated double-bond oleaginousness is little, itself is good than the mineral oil scale resistance, in its prescription, add Hinered phenols antioxidant in addition, can restrain the free radical reaction in the oxidising process, therefore, it is long that this waterproof paste has oxidation induction period, the advantage that hydrogen-separating quantity is low.
The consistency of optical cable water-blocking cream is meant with other stranding material (steel wire, PBT pipe, polyester band, aluminium-plastic tape, PE sheath etc.) and contacts for a long time, physics chemical action (dissolving, degraded, metallic corrosion etc.) takes place, cause the degree that other material property (weight, volume, mechanical property etc.) changes, the more little expression consistency of intensity of variation is good more.
This waterproof paste is base oil with the synthetic oil, and molecular weight is higher, to the PBT sleeve pipe of contact, the aluminium-plastic tape hot melt adhesive layer, high density polyethylene(HDPE) sheath material isopolarity is strong, and the oily perviousness of the polymer materials that degree of crystallinity is high is done the little of base oil than mineral oil, swelling action is low, and consistency might as well.To medium-density polyethylene, the LLDPE swelling is bigger, and consistency is poor slightly.But to the low non-polar material of this class degree of crystallinity of new LDPE (film grade), all oil-containing filled composite consistencies are all poor both at home and abroad, so, the sheath material of the uncomfortable cooperation filled fiber cable of general new LDPE (film grade).
This water-blocking filling paste is base oil, not sulfur compound with the synthetic oil.Aerosil is made thixotropic agent, and acid number is low, and metal steel wire, steel band, aluminium strip, copper sheet, aluminium-plastic tape, composite steel-plastic belt etc. are not produced corrosive nature.Test piece constant temperature in cream soaked 14 days for 80 ℃, and the observation surface does not have erosion trace and obvious metachromatism, conformance with standard specified requirement.
This optical cable water-blocking cream send domestic authoritative inspection center by Hubei Prov. Chemical Research Inst or user's sampling---and the Shanghai Electrical Cable Research Institute test, the result is good.Every technical indicator meets or exceeds the standard code requirement, and the actual measurement over-all properties is listed in table 2.
From table 2 data as can be seen, this waterproof paste is suitable with Mei Huatejia P-60 over-all properties, but it is shallow that this waterproof paste has an outward appearance look than P-90, low-temperature performance is good, absorbent time short (adjustable), and acid number is low, advantages such as consistency is better, this is that WZP does the polymer water uptake expansion agent, does not contain soda acid because this waterproof paste is made base oil with synthetic mixing oil.
Embodiment
Embodiment 1
Get synthesis of polyolefins oil (polyisobutylene oil) 1kg, synthetic aromatic hydrocarbon oil (polyoxyethylene alkylphenyl oil) 7kg, aerosil 0.5kg, polymer presses down finish SBS resin 0.2kg, WZP polymer water uptake expansion agent 0.7kg, antioxidant 264 30g, make optical cable by aforesaid preparation method and be applied to certain fiber optic cable communications engineering for Shenzhen optical cable factory with the hydroscopicity expanding water-blocking paste sample, it is good to open result of use, application shows that this product physical and chemical performance is stable, and processing performance is good, every technical indicator meets the relevant industries standard, and the filled fiber cable transmission performance is reliable and stable.
Embodiment 2
Get synthesizing poly alpha-olefin oil 40kg, synthetic polyoxyethylene alkylphenyl oil 40kg, aerosil 0.9kg, polymer presses down finish SB resin 4kg, WZP polymer water uptake expansion agent 10kg, oxidation inhibitor 22640.4g, by the aforesaid preparation method's step of the present invention, the optical cable hydroscopicity expanding water-blocking paste that makes, the complete conformance with standard of test performance, be used for filled fiber cable for Zhuhai fiber optic communications company, this optical cable is used for certain railway optical communication engineering, and it is good to open result of use, application shows, this product physical and chemical performance is stable, and processing performance is good, and the filled fiber cable transmission performance is reliable and stable.
Table 1 WZP imbibition agent technical specification
| Test event | Technical indicator | Test method |
| Outward appearance | White or micro-yellow powder | |
| Granularity | 〉=100 orders | |
| Suction speed, (25 ℃), sec | ＜10 | The 1g sample adds the 50ml deionized water |
| Water absorption, (25 ℃, 30min), g/g | ≥300 | Deionized water |
| Volume resistance, Ω cm | 3.6×10 15 | GB/T1410 |
| Dielectric constant, ∑ | ＜2.3 | GB/T1410 |
| Water content, % | 6.2 | |
| Acid number, mg KOH/g | 0.12 | GB/T2951.10 |
This optical cable water-blocking of table 2 cream combination property table
| Test event | Quality index |
| 1. outward appearance (placing 5d for 130 ℃) range estimation | Faint yellow paste, nontoxic, unchanged |
| 2. relative density (25 ℃), g/ml | 0.94 |
| 3. needle penetration, (25 ℃), 1/10mm (40 ℃) | 295 190 |
| 4. dropping point, ℃ | ＞210 |
| 5. flash-point, ℃ | 250 |
| 6. water content, % | Vestige |
| 7. analyse oil (80 ℃, 24hr), % | 1.4 |
| 8. evaporation (80 ℃, 24hr), % | 0.38 |
| 9. pressure divides oil (24 ± 1 ℃), % | 4.8 |
| 10. absorbent time (15g sample+107ml water), min | 8 |
| 11. water absorption rate, % | 1500 |
| 12. acid number, mg KOH/g | 0.42 |
| 13. the liberation of hydrogen value, (80 ℃, 24hr), μ l/g | 0.01 |
| 14. oxidation induction period, (190 ℃), min | ＞30 |
| 15. viscosity (25 ℃, 50s-1)，mPa.s | 20620 |
| 16. (85 ℃ of compatibility (1) weight variation % and PBT, relative humidity 85%, 7d) optical fiber is (85 ℃, relative humidity 85%, 7d) HDPE is (85 ℃, 14d) MDPE is (85 ℃, 14d) (2) tensile strength changes (85 ℃ of %, 14d) the anti-prehensile of PBT HDME MDPE (3) is (85 ℃, 14d) with (68 ℃ of PBT HDPE MDPE (4) metal compound belts, 7d) with aluminium-plastic tape composite steel-plastic belt (5) corrosivity (85 ℃, 14d) and steel, inscription, copper | There is not the not stratified no hot spot of cracking nothing cracking 1.1-0.16 4.1 5.6 2.2 9.6 5.6 has cracking |
Claims (4)
1, a kind of high-hydroscopicity expanding water-blocking paste for optical cable, it is characterized in that containing synthesis of polyolefins oil, synthetic aromatic hydrocarbon oil, silicon dioxide powder, polymer presses down finish, polymer water uptake expansion agent and oxidation inhibitor composition, described synthesis of polyolefins oil is poly ﹠ Alpha ,-olefin oil or polyisobutylene oil, described synthetic aromatic hydrocarbon oil is polyoxyethylene alkylphenyl oil or polyalkylbenzene oil, described silicon dioxide powder is the silicon dioxide powder that combustion method is produced, described polymer water uptake expansion agent is the WZP polymer water uptake expansion agent that the Hubei Prov. Chemical Research Inst produces, described oxidation inhibitor is oxidation inhibitor 2,6-di-tert-butyl-4-methy phenol or oxidation inhibitor 2,2-methylene-bis (4-methyl-6-tert butyl phenol), the weight proportion of its composition is:
40～80 parts of 10～40 parts of synthetic aromatic hydrocarbon oil of synthesis of polyolefins oil
2～10 parts of polymers of silicon dioxide powder press down 1～5 part of finish
0.1～0.5 part in 5～10 parts of oxidation inhibitor of polymer water uptake expansion agent.
2, waterproof paste as claimed in claim 1 is characterized in that described polymer presses down finish and is: SB resin or SBS resin, EP resin.
3, waterproof paste as claimed in claim 1 is characterized in that synthesis of polyolefins oil and synthetic aromatic hydrocarbon oil make base oil and account for weight 〉=70% in prescription.
4, the preparation method of the described waterproof paste of claim 1 is characterized in that step is:
(1) synthesis of polyolefins oil and synthetic aromatic hydrocarbon oil are mixed, stir by preset proportion, be warming up to 180 ℃, residual volatile matter and moisture content are removed in underpressure distillation, get mixing oil A;
(2) polymer of proportional is pressed down finish and adds among the mixing oil A, stir and be warming up to 200 ℃, solids is dissolved below the postcooling to 60 ℃ fully, transparent glue liquid B;
(3) oxidation inhibitor with proportional adds in the glue liquid B, stirs, mixes, dissolves, and gets transparent glue C;
(4) silicon dioxide powder and the agent of WZP polymer water uptake expansion with proportional adds among the glue C, after stirring, gets faint yellow paste D;
(5) with paste D by grinding, homogenizing, stir down vacuumize, remove bubble after, pressure filtration, the finished product waterproof paste, barrelling sealing preservation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011382228A CN1157459C (en) | 2001-11-26 | 2001-11-26 | High-hydroscopicity expanding water-blocking paste for optical cable and its prepn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011382228A CN1157459C (en) | 2001-11-26 | 2001-11-26 | High-hydroscopicity expanding water-blocking paste for optical cable and its prepn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1350046A CN1350046A (en) | 2002-05-22 |
| CN1157459C true CN1157459C (en) | 2004-07-14 |
Family
ID=4674445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011382228A Expired - Lifetime CN1157459C (en) | 2001-11-26 | 2001-11-26 | High-hydroscopicity expanding water-blocking paste for optical cable and its prepn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1157459C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740168B (en) * | 2008-11-19 | 2011-07-20 | 上海鸿辉光通材料有限公司 | Cold-application filling paste for cables |
| CN102053321B (en) * | 2009-11-10 | 2012-11-21 | 上海鸿辉光通材料有限公司 | Thermal expansion water-blocking filling paste for optical cables and preparation method thereof |
| CN102280186B (en) * | 2010-06-12 | 2013-09-11 | 上海鸿辉光通科技股份有限公司 | Hot melt type flame retardation filling paste for cable and preparation method thereof |
| CN102354561B (en) * | 2011-07-12 | 2013-01-30 | 安徽润佳电缆集团股份有限公司 | Vertical water-blocked filler material used in cable |
| CN113278389A (en) * | 2021-05-26 | 2021-08-20 | 上杭鑫昌龙实业有限公司 | Security cable waterproof glue, preparation method and filling process thereof |
-
2001
- 2001-11-26 CN CNB011382228A patent/CN1157459C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1350046A (en) | 2002-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101550375B (en) | Super absorbent expansion thixotropy type block water paste with low density for optic cable and preparing method thereof | |
| EP0749453B1 (en) | Dimer fatty acid-based polyamide | |
| CN101928545B (en) | Addition reaction-curable silicone pressure-sensitive adhesive composition and pressure-sensitive adhesive tape | |
| US5004869A (en) | Electrical connector containing adipic acid polyester sealant composition | |
| CN100343311C (en) | Vinyl trimethoxysilane oligomer preparation method | |
| CN1157459C (en) | High-hydroscopicity expanding water-blocking paste for optical cable and its prepn | |
| DE69019115T2 (en) | Organopolysiloxane composition containing cyclopentenyl groups which can be crosslinked to form an elastomer. | |
| CN101910252A (en) | Ionomeric silicone thermoplastic elastomers | |
| CN111334264A (en) | Temporary plugging agent and preparation method thereof | |
| CA2123200A1 (en) | A filling compound | |
| CN110819255A (en) | Reaction type polymer self-adhesion waterproofing membrane | |
| US5412022A (en) | Lyo gel, its production and its use for sealing | |
| DE2346538A1 (en) | SILICONE FLUID USED AS BRAKE FLUID | |
| CN106244094A (en) | A kind of dual composition addition type silicone rubber of bonding woven dacron base material and preparation method thereof | |
| CN102994271B (en) | A kind of airplane skin scavenger specially and manufacture method thereof | |
| CN102453274B (en) | Viscosity reducing master batch for polyolefin and preparation method and application thereof | |
| CN114806507B (en) | Environment-friendly dust suppressant and preparation method and application thereof | |
| CN110467904A (en) | A kind of rubber oil and preparation method thereof for producing modified asphalt waterproof coiled material | |
| CN1215155C (en) | Lubricant for drawing radial tyre steel cord thread and its preparing method | |
| JPS5998196A (en) | Silicone functional liquid and additive concentrate therefor | |
| US3893839A (en) | Telephone cable filling composition | |
| CN1058981C (en) | Instantaneous leak stoppage material and application method | |
| CN108707074A (en) | A method of preparing low acid value tricarboxymethyl propane oleate | |
| US4716190A (en) | Method for equilibrating polyamide magnet wire coatings and enamel compositions | |
| CN110272712A (en) | A kind of chip or wiring board non-corrosive silicon rubber bonder and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUASHUO SCIENCE CO., LTD. Free format text: FORMER NAME: HUBEI PROV. CHEMICAL RESEARCH INST. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Two road in Hubei province Wuhan city Hongshan District No. 30 Guanshan Patentee after: Huashuo Technology Co., Ltd. Address before: Two road in Hubei province Wuhan city Hongshan District No. 30 Guanshan Patentee before: Hubei Research Institute of Chemistry |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: High-hydroscopicity expanding water-blocking paste for optical cable and its prepn Effective date of registration: 20100907 Granted publication date: 20040714 Pledgee: Bank of Hankou, Limited by Share Ltd, Optics Valley branch Pledgor: Huashuo Technology Co., Ltd. Registration number: 2010990000869 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20151106 Granted publication date: 20040714 Pledgee: Bank of Hankou Limited by Share Ltd Optics Valley branch Pledgor: Huashuo Technology Co., Ltd. Registration number: 2010990000869 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PM01 | Change of the registration of the contract for pledge of patent right |
Change date: 20151106 Registration number: 2010990000869 Pledgee after: Bank of Hankou Limited by Share Ltd Optics Valley branch Pledgee before: Bank of Hankou, Limited by Share Ltd, Optics Valley branch |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20040714 |