CN105621928B - Consider cement blowing agent of preparation and preparation method thereof to be worth doing using scrap leather - Google Patents
Consider cement blowing agent of preparation and preparation method thereof to be worth doing using scrap leather Download PDFInfo
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- CN105621928B CN105621928B CN201610090523.9A CN201610090523A CN105621928B CN 105621928 B CN105621928 B CN 105621928B CN 201610090523 A CN201610090523 A CN 201610090523A CN 105621928 B CN105621928 B CN 105621928B
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- parts
- scrap leather
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- blowing agent
- cement
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a kind of cement blowing agent and preparation method for considering preparation to be worth doing with scrap leather, following material is needed during preparation according to mass parts：5 ~ 6 parts of 100 ~ 150 parts of scrap leather bits, 200 ~ 250 parts of water, 2 ~ 3 parts of calcium hydroxide, 0.5 ~ 1 part of alkali protease, 4 ~ 6 parts of calcium oxide, 15 ~ 20 parts of acrylmonomers mixture, 10 ~ 20 parts of initiator solution and additive.The preparation method of the cement water reducing agent prepared the invention also discloses a kind of utilization scrap leather bits, the foam performance of the foaming agent prepared by the present invention and the stability of foam are good, it is adapted to the preparation of cement foaming material, the pore opening that is formed in foamed cement material and it is evenly distributed, be conducive to preparing the foam cement of low-density, preparation technology and preparation process is reasonable, operability is good.
Description
Technical field
The invention belongs to concrete admixture field, and in particular to cement blowing agent prepared by a kind of utilization scrap leather bits and its
Preparation method.
Background technology
Foam cement is also known as foam concrete or foamed concrete, is that appropriate bubble is introduced in cement slurry, stirs
Pouring a kind of inside of hardening after mixing uniformly again has the lightweight concrete of a large amount of airtight air vents, what foam cement had
The good characteristics such as heat insulating ability, Lightness, high temperature resistant, the feature of environmental protection, economy, have adapted to present society and have developed advocated saving money
Source, economic and environment-friendly theory and requirement, obtain extensive attention.Influence the factor of foam cement a lot, wherein foaming agent
Influence is especially pronounced（Liu Yang, Tang Ming, the study of the Song Dynasty monarch concrete foamers progress [J] concrete, 2012 (9)：57-61）.
Mainly there are four generation foaming agents, respectively rosin soap and colophonium pyrolytic polymer foaming by the sequencing of the development and application time of foaming agent
Agent, synthesis class surfactant type foaming agent, animal/vegetable protein foaming agent, the big classification of complex class foaming agent four（The bright cement of Liu Heng
The research Chemical Engineerings of foaming agent screening varieties and foam cement technique and equipment, 2015,（11）：39-42）, this is several at present
The cement blowing agent of type has sale and applied, but compared with external advanced foaming agent, foam produced by China's foaming agent
Uniformity, stability and fine and closely woven property it is undesirable（A kind of composite cement foaming of Chen Jing, Gan Gejin, Zhao Wanqun, Xu Fen lotus
The research material Leaders of agent, 2014,28（Special edition 23）：291-293）.For the growth requirement of the current foam cement of China, grind
Foaming effect processed is good, foam stability energy is good, high comprehensive performance, the rational environmental type foaming agent of Costco Wholesale are to foam cement
Preparation and further genralrlization tool be of great significance.
China has become whole world leather big producer at present, and about 1.7 hundred million standard brown kraft amounts are produced every year
Leather, wherein 25% or so eventually becomes useful leather products, remaining 75% or so in piece, cut, grind and deburring life
Spoiled scrap leather bits during production, there is 1,400,000 tons or so every year, the scrap leather bits of enormous amount, and 90% scrap leather bits contain chromium in addition
Tanning agent, the problem being processed into for leather industry of scrap leather bits（Wang Qun, Zhang Sufeng, beans Guan Guan, Wang Xuechuan, strong torrential hydrolysis
Application study Chinese leather of the collagen in paper industry, 2015,44（5）：25-29；Wang Bi, Lin Wei, Ma Chunhui,
What inscription allowed leather castoffs resource reusing-collagen utilizes basic present situation and prospect leather chemical industries 2001,18 (3):10-
14）, it is main at present to be handled with modes such as burial, burnings, the huge waste of resource is not only caused, is also generated very big
Environmental pollution.The method of the present invention is to prepare cement blowing agent using scrap leather bits, for scrap leather bits without special requirement, no
Need to separate chromium compound therein, be big, the very promising scrap leather bits application approach of a treating capacity.
The content of the invention
The present invention provides cement blowing agent and preparation method prepared by a kind of utilization scrap leather bits, is produced using leather industry
Discarded scurf prepares cement blowing agent, preparation method have preparation technology it is unique, it is good in economic efficiency the characteristics of.Prepared foaming agent
Belong to animal protein modified foaming agent, with bubbling efficiency is high, stomata that is being produced in foam cement is fine and smooth, be evenly distributed
Feature,
To reach above-mentioned purpose, the technical scheme that the present invention takes is：
The embodiment of the present invention provides cement blowing agent prepared by a kind of utilization scrap leather bits, by following material according to mass parts system
Into：100 ~ 150 parts of scrap leather bits, 200 ~ 250 parts of water, 2 ~ 3 parts of calcium hydroxide, 0.5 ~ 1 part of alkali protease, 4 ~ 6 parts of calcium oxide, third
5 ~ 6 parts of 15 ~ 20 parts of alkenyl monomer mixture, 15 ~ 20 parts of initiator solution and additive.
In such scheme, the scrap leather bits that the scrap leather bits produce for leather industry in leather making process, contained humidity is less than
15%, the impurity beyond contained non-scurf is less than 5%.
In such scheme, the calcium hydroxide is technical grade, and content is more than 98%.
In such scheme, the alkali protease is 2709- alkali proteases, and enzyme activity is 100000u/g, active ingredient
98%, 40 DEG C ~ 60 DEG C of Applicable temperature and pH are 9 ~ 11.
In such scheme, the calcium oxide is technical grade, and content is more than 98%.
In such scheme, the acrylic monomer mixture is acrylic acid, methyl acrylate, butyl acrylate, allyl
Base APEO and ALS are 5 according to mass parts:4:3:6:2 ratios are mixed to get.
In such scheme, the initiator solution is dissolved in 20 parts of water and obtained for 1 part of ammonium persulfate or sodium peroxydisulfate
.
In such scheme, the additive is lauryl sodium sulfate and neopelex according to mass parts 1:1
Ratio is obtained by mixing.
The embodiment of the present invention also provides a kind of preparation method of cement blowing agent prepared by utilization scrap leather bits, the preparation method
Realized by following steps：
Step one：Scrap leather bits degraded prepares protein solution：
Take scrap leather to consider 100 ~ 150 parts to be worth doing according to mass parts, add 200 ~ 250 parts of water, be warming up to 40 DEG C ~ 50 DEG C, add 2 ~ 3 parts
Calcium hydroxide, checks the pH of water between 9 ~ 11, adds 0.5 ~ 1 part of alkali protease, the lower insulation of agitation 2 ~ 3 hours, Ran Housheng
Temperature adds 4 ~ 6 parts of calcium oxide, is stirred for lower insulation reaction 3 ~ 4 hours, obtains protein degradation matter solution, insulation is treated to 80 ~ 90 DEG C
With；
Step 2：The preparation of cement blowing agent：
15 ~ 20 parts of pi-allyl mix monomers are slowly added by dropwise addition mode in above-mentioned protein degradation matter solution, together
When 15 ~ 20 parts of initiator solution is added dropwise, the time control that the two is added is in 40 ~ 60 minutes, and charging finishes rear insulation reaction 2
~ 3 hours, 25 ~ 30 DEG C are cooled to, 5 ~ 6 parts of additive is added, is 7.5 ~ 8.0 with the pH of quality acetic acid regulation system, control
The solids content of final product is 18% ~ 21%, and products therefrom is cement water reducing agent.
Compared with prior art, beneficial effects of the present invention：
The present invention, as raw material, is carried out chemical degradation and chemical modification to it after the completion of enzyme degraded, led to using scrap leather bits
Cross compounding and be prepared for the cement blowing agent with branched chain molecule；Imitated by the foaming of the cement blowing agent prepared by the present invention
Rate is high, and the stomata of formation is fine and smooth, be evenly distributed, and preparation technology is unique, remarkable in economical benefits, before good market application
Scape, the present invention, as raw material, is the approach that scrap leather bits recycling have found application, is also protein-based water using scrap leather bits
The preparation of cement foaming agent opens new raw material.
Embodiment
The present invention is described in detail below.
The embodiment of the present invention provides cement blowing agent prepared by a kind of utilization scrap leather bits, by following material according to mass parts group
Into：
100 ~ 150 parts of scrap leather bits, 200 ~ 250 parts of water, 2 ~ 3 parts of calcium hydroxide, 0.5 ~ 1 part of alkali protease, calcium oxide 4 ~ 6
5 ~ 6 parts of part, 15 ~ 20 parts of acrylmonomers mixture, 15 ~ 20 parts of initiator solution and additive.
The scrap leather bits giving up because of the generation of the production processes such as deburring, shaving, lamella in leather making process for leather industry
Scurf, the impurity that contained humidity is less than beyond 15%, contained non-scurf is less than 5%.
The calcium hydroxide is technical grade, and content is more than 98%.
The alkali protease is 2709- alkali proteases, and enzyme activity is 100000u/g, active ingredient 98%, applicable for temperature
40 DEG C ~ 60 DEG C and pH of degree is 9 ~ 11.
The calcium oxide is technical grade, and content is more than 98%.
The acrylic monomer mixture is acrylic acid, methyl acrylate, butyl acrylate, allyl polyethenoxy ether
With ALS according to mass parts be 5:4:3:6:2 ratios are mixed to get.
The initiator solution is dissolved in acquisition in 20 parts of water for 1 part of ammonium persulfate or sodium peroxydisulfate.
The additive is lauryl sodium sulfate and neopelex according to mass parts 1:1 ratio mix and
.
The embodiment of the present invention also provides the preparation method that a kind of utilization scrap leather bits prepare cement water reducing agent, and this method passes through
Following steps are realized:
Step one：Scrap leather bits degraded prepares protein solution：
Take scrap leather to consider 100 ~ 150 parts to be worth doing according to mass parts, add 200 ~ 250 parts of water, be warming up to 40 DEG C ~ 50 DEG C, add 2 ~ 3 parts
Calcium hydroxide, checks the pH of water between 9 ~ 11, adds 0.5 ~ 1 part of alkali protease, the lower insulation of agitation 2 ~ 3 hours, Ran Housheng
Temperature adds 4 ~ 6 parts of calcium oxide, is stirred for lower insulation reaction 3 ~ 4 hours, obtains protein degradation matter solution, insulation is treated to 80 ~ 90 DEG C
With；
Step 2：The preparation of cement blowing agent：
15 ~ 20 parts of pi-allyl mix monomers are slowly added by dropwise addition mode in above-mentioned protein degradation matter solution, together
When 15 ~ 20 parts of initiator solution is added dropwise, the time control that the two is added is in 40 ~ 60 minutes, and charging finishes rear insulation reaction 2
~ 3 hours, 25 ~ 30 DEG C are cooled to, 5 ~ 6 parts of additive is added, is 7.5 ~ 8.0 with the pH of quality acetic acid regulation system, control
The solids content of final product is 18% ~ 21% or so, and products therefrom is cement water reducing agent.
Embodiment 1：
The embodiment of the present invention also provides the preparation method that a kind of utilization scrap leather bits prepare cement water reducing agent, and this method passes through
Following steps are realized:
Step one：Scrap leather bits degraded prepares protein solution：
Take scrap leather to consider 100 parts to be worth doing according to mass parts, add 200 parts of water, be warming up to 40 DEG C, add 2 parts of calcium hydroxides, check water
PH be 9, add 0.5 part of alkali protease, then the lower insulation of agitation 2 hours is warming up to 80 DEG C, adds 4 parts of calcium oxide, then stir
Mix lower insulation reaction 3 hours, obtain protein degradation matter solution, heat preservation for standby use；
Step 2：The preparation of cement blowing agent：
15 parts of pi-allyl mix monomers are slowly added by dropwise addition mode in above-mentioned protein degradation matter solution, dripped simultaneously
Plus 15 parts of initiator solution, the time control that the two is added is in 40 minutes, and charging finishes rear insulation reaction 2 hours, cools
To 25 DEG C, 5 parts of additive is added, is 7.5 with the pH of quality acetic acid regulation system, the solids content for controlling final product is
18%, products therefrom is cement water reducing agent.
Embodiment 2：
The embodiment of the present invention also provides the preparation method that a kind of utilization scrap leather bits prepare cement water reducing agent, and this method passes through
Following steps are realized:
Step one：Scrap leather bits degraded prepares protein solution：
Take scrap leather to consider 150 parts to be worth doing according to mass parts, add 250 parts of water, be warming up to 50 DEG C, add 3 parts of calcium hydroxides, check water
PH be 11, add 1 part of alkali protease, then the lower insulation of agitation 3 hours is warming up to 90 DEG C, adds 6 parts of calcium oxide, then stir
Mix lower insulation reaction 4 hours, obtain protein degradation matter solution, heat preservation for standby use；
Step 2：The preparation of cement blowing agent：
20 parts of pi-allyl mix monomers are slowly added by dropwise addition mode in above-mentioned protein degradation matter solution, dripped simultaneously
Plus 20 parts of initiator solution, the time control that the two is added is in 60 minutes, and charging finishes rear insulation reaction 3 hours, cools
To 30 DEG C, 6 parts of additive is added, is 8.0 with the pH of quality acetic acid regulation system, the solids content for controlling final product is
20%, products therefrom is cement water reducing agent.
Embodiment 3：
The embodiment of the present invention also provides the preparation method that a kind of utilization scrap leather bits prepare cement water reducing agent, and this method passes through
Following steps are realized:
Step one：Scrap leather bits degraded prepares protein solution：
Take scrap leather to consider 125 parts to be worth doing according to mass parts, add 225 parts of water, be warming up to 45 DEG C, add 2.5 parts of calcium hydroxides, check
The pH of water is 10, adds 0.75 part of alkali protease, and then the lower insulation of agitation 2.5 hours is warming up to 85 DEG C, adds calcium oxide 5
Part, it is stirred for lower insulation reaction 3.5 hours, obtains protein degradation matter solution, heat preservation for standby use；
Step 2：The preparation of cement blowing agent：
17.5 parts of pi-allyl mix monomers are slowly added by dropwise addition mode in above-mentioned protein degradation matter solution, simultaneously
17.5 parts of initiator solution is added dropwise, the time control that the two is added is in 50 minutes, and it is small that charging finishes rear insulation reaction 2.5
When, 27.5 DEG C are cooled to, 5.5 parts of additive is added, is 7.8 with the pH of quality acetic acid regulation system, controls final product
Solids content be 21%, products therefrom is cement water reducing agent.
Claims (7)
1. cement blowing agent prepared by a kind of utilization scrap leather bits, it is characterised in that be made up of following material according to mass parts：Scrap leather
100 ~ 150 parts of bits, 200 ~ 250 parts of water, 2 ~ 3 parts of calcium hydroxide, 0.5 ~ 1 part of alkali protease, 4 ~ 6 parts of calcium oxide, acrylic list
5 ~ 6 parts of 15 ~ 20 parts of body mixture, 15 ~ 20 parts of initiator solution and additive；The acrylic monomer mixture is propylene
Acid, methyl acrylate, butyl acrylate, allyl polyethenoxy ether and ALS are 5 according to mass parts:4:3:6:2
Ratio is mixed to get；The additive is lauryl sodium sulfate and neopelex according to mass parts 1:1 ratio is mixed
Close and obtain.
2. cement blowing agent prepared by utilization scrap leather bits according to claim 1, it is characterised in that：The scrap leather bits are skin
The scrap leather bits that leather industry is produced in leather making process, the impurity that contained humidity is less than beyond 15%, contained non-scurf is less than 5%.
3. cement blowing agent prepared by utilization scrap leather bits according to claim 1, it is characterised in that：The calcium hydroxide is
Technical grade, content is more than 98%.
4. cement blowing agent prepared by utilization scrap leather bits according to claim 1, it is characterised in that：The alkali protease
For 2709- alkali proteases, enzyme activity is 100000u/g, active ingredient 98%, and 40 DEG C ~ 60 DEG C of Applicable temperature and pH are 9 ~ 11.
5. cement blowing agent prepared by utilization scrap leather bits according to claim 1, it is characterised in that：The calcium oxide is work
Industry level, content is more than 98%.
6. cement blowing agent prepared by utilization scrap leather bits according to claim 1, it is characterised in that：The initiator solution
Ammonium persulfate or sodium peroxydisulfate for 1 part are dissolved in 20 parts of water and obtained.
7. the preparation method of cement blowing agent prepared by utilization scrap leather bits according to claim 1, it is characterised in that the system
Preparation Method is realized by following steps：
Step one：Scrap leather bits degraded prepares protein solution：
Take scrap leather to consider 100 ~ 150 parts to be worth doing according to mass parts, add 200 ~ 250 parts of water, be warming up to 40 DEG C ~ 50 DEG C, add 2 ~ 3 parts of hydrogen-oxygens
Change calcium, check the pH of water between 9 ~ 11, add 0.5 ~ 1 part of alkali protease, then the lower insulation of agitation 2 ~ 3 hours is warming up to
80 ~ 90 DEG C, 4 ~ 6 parts of calcium oxide is added, lower insulation reaction is stirred for 3 ~ 4 hours, obtains protein degradation matter solution, heat preservation for standby use；
Step 2：The preparation of cement blowing agent：
15 ~ 20 parts of pi-allyl mix monomers are slowly added by dropwise addition mode in above-mentioned protein degradation matter solution, dripped simultaneously
Plus 15 ~ 20 parts of initiator solution, the time control that the two is added is in 40 ~ 60 minutes, and it is small that charging finishes rear insulation reaction 2 ~ 3
When, 25 ~ 30 DEG C are cooled to, 5 ~ 6 parts of additive is added, is 7.5 ~ 8.0 with the pH of quality acetic acid regulation system, controls final product
Solids content be 18% ~ 21%, products therefrom is cement blowing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090523.9A CN105621928B (en) | 2016-02-18 | 2016-02-18 | Consider cement blowing agent of preparation and preparation method thereof to be worth doing using scrap leather |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610090523.9A CN105621928B (en) | 2016-02-18 | 2016-02-18 | Consider cement blowing agent of preparation and preparation method thereof to be worth doing using scrap leather |
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| CN105621928A CN105621928A (en) | 2016-06-01 |
| CN105621928B true CN105621928B (en) | 2017-10-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110698141A (en) * | 2019-11-08 | 2020-01-17 | 中电建路桥集团有限公司 | Composite foam light soil and preparation method thereof |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108484202A (en) * | 2018-03-27 | 2018-09-04 | 申轲 | The cement blowing agent prepared using discarded scurf |
| CN108424035A (en) * | 2018-04-19 | 2018-08-21 | 中原工学院 | A kind of preparation method of polymer water cement foaming agent and its foamed concrete |
| CN109081627A (en) * | 2018-09-29 | 2018-12-25 | 东南大学 | The method for preparing foaming agent mother liquor using basic protein enzymatic hydrolysis protein |
| CN109761534A (en) * | 2019-02-27 | 2019-05-17 | 阜新圣丽生物工程有限公司 | A kind of concrete foamer and preparation method thereof and its application |
| CN110510607B (en) * | 2019-08-23 | 2022-07-22 | 陕西科技大学 | Amino-terminated hyperbranched polyamide modified waste crumb used as graphene oxide monolithic layer small-size dispersing agent, and preparation method and application thereof |
| CN110510606A (en) * | 2019-08-23 | 2019-11-29 | 陕西科技大学 | Degradation scrap leather bits are used as the preparation method that graphene oxide lacks lamella dispersing agent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020709A (en) * | 2007-02-02 | 2007-08-22 | 中国皮革和制鞋工业研究院 | Process of extracting collagen from chromium-containing waste leather |
| CN102250292A (en) * | 2011-04-29 | 2011-11-23 | 西南科技大学 | Thermoplastic animal protein and preparation method thereof |
| CN104724973A (en) * | 2015-03-19 | 2015-06-24 | 烟台大学 | Preparation method of leather meal cement foaming agent |
-
2016
- 2016-02-18 CN CN201610090523.9A patent/CN105621928B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020709A (en) * | 2007-02-02 | 2007-08-22 | 中国皮革和制鞋工业研究院 | Process of extracting collagen from chromium-containing waste leather |
| CN102250292A (en) * | 2011-04-29 | 2011-11-23 | 西南科技大学 | Thermoplastic animal protein and preparation method thereof |
| CN104724973A (en) * | 2015-03-19 | 2015-06-24 | 烟台大学 | Preparation method of leather meal cement foaming agent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110698141A (en) * | 2019-11-08 | 2020-01-17 | 中电建路桥集团有限公司 | Composite foam light soil and preparation method thereof |
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Inventor after: Lv Shenghua Inventor after: Luo Xiaoqian Inventor after: Zhu Linlin Inventor after: Jia Chunmao Inventor before: Lv Shenghua Inventor before: Zhu Linlin Inventor before: Jia Chunmao |
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Effective date of registration: 20200706 Address after: No.62, Jianshan group 1, Longshan Village, Xiaojing Township, Xiuwen County, Guiyang City, Guizhou Province Patentee after: Guizhou xinguangjian concrete admixture Co.,Ltd. Address before: 710021 Shaanxi city of Xi'an province Weiyang University City Patentee before: SHAANXI University OF SCIENCE & TECHNOLOGY |
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