CN102704346A - Method for preparing flame retardant paper by multi-layered sedimentation - Google Patents
Method for preparing flame retardant paper by multi-layered sedimentation Download PDFInfo
- Publication number
- CN102704346A CN102704346A CN2012102081790A CN201210208179A CN102704346A CN 102704346 A CN102704346 A CN 102704346A CN 2012102081790 A CN2012102081790 A CN 2012102081790A CN 201210208179 A CN201210208179 A CN 201210208179A CN 102704346 A CN102704346 A CN 102704346A
- Authority
- CN
- China
- Prior art keywords
- paper
- deposition
- fire retardant
- string
- sedimentation
- 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.)
- Granted
Links
- 239000003063 flame retardant Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004062 sedimentation Methods 0.000 title claims abstract description 15
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 230000008021 deposition Effects 0.000 claims description 30
- 239000012530 fluid Substances 0.000 claims description 20
- 238000002360 preparation method Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 229920001131 Pulp (paper) Polymers 0.000 claims description 7
- 239000012295 chemical reaction liquid Substances 0.000 claims description 7
- 230000003750 conditioning effect Effects 0.000 claims description 6
- 239000008346 aqueous phase Substances 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 229920000867 polyelectrolyte Polymers 0.000 claims description 4
- 230000009970 fire resistant effect Effects 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 238000005137 deposition process Methods 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002105 nanoparticle Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims 1
- 239000000123 paper Substances 0.000 abstract description 36
- 230000008569 process Effects 0.000 abstract description 12
- 239000011087 paperboard Substances 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 abstract 3
- 238000010923 batch production Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 235000010413 sodium alginate Nutrition 0.000 description 2
- 229940005550 sodium alginate Drugs 0.000 description 2
- 239000000661 sodium alginate Substances 0.000 description 2
- AEMOLEFTQBMNLQ-AQKNRBDQSA-N D-glucopyranuronic acid Chemical compound OC1O[C@H](C(O)=O)[C@@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-AQKNRBDQSA-N 0.000 description 1
- IAJILQKETJEXLJ-UHFFFAOYSA-N Galacturonsaeure Natural products O=CC(O)C(O)C(O)C(O)C(O)=O IAJILQKETJEXLJ-UHFFFAOYSA-N 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 241001602688 Pama Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229940097043 glucuronic acid Drugs 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Landscapes
- Paper (AREA)
Abstract
The invention discloses a method utilizing a molecular sedimentation to multi-layered sediment and modifying plant fiber and forming the modified plant fiber into flame retardant paper or paper board, which includes the following steps: (1) uniformly dispersing the plant fiber into pulp; (2) dissolving electropositive sediment and PH regulator in water to serve as first sedimentation reaction solution, and dissolving electronegative sediment material and PH regulator in water to serve as second sedimentation reaction solution; (3) uniformly immersing the plant fiber in the first sedimentation reaction solution for standing a certain time; (4) taking out the output of (3) to be washed; (5) uniformly immersing the output of (4) in the second sedimentation reaction solution for standing a certain time; and (6) repeating step 2 to step 5 for multiple times, paper making through the modified plant fiber, and preparing the flame retardant paper. By adopting the method, the sedimentation film can be closely combined with the plant fiber, the reaction device has a simple structure, requires less investment, is simple to process, is low in cost, and is environment-friendly, the batch production can be realized, and the mechanical strength and the flame retardant property of the prepared paper are excellent.
Description
Technical field
This patent relates to a kind of method for preparing fire retardant papers.Being particularly related to and adopting molecular deposition that string is carried out the multilayer deposition, string is carried out flame-retardant modified, and is the method for Fire resistant paper or board with the formed by plant fibre after the modification.
Background technology
The production method of string fire retardant papers has additive process, infusion process, rubbing method in the slurry both at home and abroad at present.Fire retardant ran off very serious when additive process was fitted and to be copied paper in the slurry; Flame retardant effect and cost should not be controlled; Retention 80 % of general fire retardant just have been not easy very much; Though through cooperating the losing issue that can solve fire retardant, the use of retention agent not only to increase production cost with retention agent and being unfavorable for white water loop; The fire retardant that infusion process is used is water miscible, fire retardant moisture absorption easily itself, so the general poor water resistance of paper flame-proof material that obtains, moisture absorption is strong, distortion is big, intensity decreases significantly, be prone to the hardening of turning to be yellow; Rubbing method is coated on the surface of paper with fire retardant, and the fire retardant major part concentrates on the surface of paper, can not give paper inner anti-flammability, and flame retardant effect is not satisfactory.Because the production method slower development has also limited the application and the development of fire retardant papers, create new technological means and technology is given paper or cardboard acquires a special sense with fire retardant performance.
In aqueous phase system; Since on the plant cellulose-COOH and hemicellulose in glucuronic acid contained-COOH ionization; String is elecrtonegativity, and charge density depend on the surface-degree of ionization of COOH, in the pH value less than 2.8 o'clock; Carboxyl is protonated fully, and the fiber surface electric charge levels off to zero.Along with the rising of pH value, carboxyl begins ionization, and the charge density of fiber surface improves thereupon, and the elecrtonegativity of fiber also can improve.In addition, fiber surface is uneven, has porous.Therefore, string can be used in the deposited material alternate treatment with fire retardation that aqueous phase has positive and negative charge, makes its surface form the fire-retardant film of polymer multi-layer, thereby realizes the flame-retardant modified of string.
Summary of the invention
The purpose of this invention is to provide the method that a kind of multilayer deposition prepares fire retardant papers.This method is to utilize molecular deposition; Use positive and negative deposited material alternate treatment string at aqueous phase; Make its surface form multi-layer fire-retarded deposited film, thereby realize the flame-retardant modified of string, then the string after the modification is copied paper and just can obtain fire retardant papers.
The objective of the invention is to realize through following approach that it is that to utilize molecular deposition that string is carried out flame-retardant modified, string is carried out flame-retardant modified, and is Fire resistant paper or board with the formed by plant fibre of modification, and its concrete preparation process is:
The first step evenly is separated into pulpous state with the fiber device that dissociates with the paper grade (stock) string, and is subsequent use;
Second step, get electropositive deposit and PH conditioning agent and be dissolved in conduct deposition reaction for the first time liquid in the water fully, subsequent use;
The 3rd step was immersed in second with the paper pulp for preparing in the first step and goes on foot in the deposit fluid of producing, and through stirring the paper fiber was dispersed in the deposition reaction liquid, left standstill certain hour;
The 4th step, the sedimentation products of last step preparation is taken out, the water cyclic washing, subsequent use;
The 5th step, get elecrtonegativity deposited material and PH conditioning agent and be dissolved in conduct deposition reaction for the second time liquid in the water fully, subsequent use;
The 6th step, the sedimentation products of the 4th step preparation is immersed the deposit fluid of the 5th step preparation, through stirring the paper fiber is dispersed in the deposit fluid, leave standstill certain hour;
In the 7th step, repeated for the 4th step;
In the 8th step, repeatedly repeat second and went on foot for the 8th step;
In the 9th step, the modified plant fibers that the last step obtains is copied paper, the preparation fire retardant papers.
The present invention has the following advantages: 1, production technology is simple, and process is easy to control, and cost is low, expands commercial production scale easily to; 2, deposited film and string are combined closely, and heat endurance and mechanical stability are good, nontoxic pollution-free, the mechanical property that simultaneously deposited film also can the enhancement of plant fiber; 3, the fire retardant service efficiency is high, can change deposited material according to actual needs, thereby prepare the fire retardant papers that satisfies different demands; 4, use the method need not change the common paper-making process in the industry, easily this method is combined with commercial production, realize suitability for industrialized production.
Description of drawings
Fig. 1: fire retardant papers fiber zeta current potential is with the variation of the deposition number of plies
Fig. 2: sedimentation prepares the fire retardant papers sketch map
Wherein: string (a), for the first time deposit (b), deposit (c) for the second time.
The specific embodiment
Provide instance below the present invention is done more detailed explanation; It is important to point out that following examples can not be interpreted as the restriction to the invention protection domain; The person skilled in the art in this field to some nonessential improvement and adjustment that the present invention makes, must belong to protection scope of the present invention according to the foregoing invention content.
The used positive and negative electrical deposited material of the present invention is to have the positive and negative electrical material with fire retardation at aqueous phase, can be micromolecule electrolyte, big molecule polyelectrolyte or charged inorganic nano-particle.As contain the colloidal particle and the polyelectrolyte of halogen, phosphorus, nitrogen, boron, metallic element; When carrying out the multilayer deposition, in whole deposition process, can use multiple deposit, a kind of deposited material can repeatedly be participated in deposition reaction and prepared fire retardant papers.The PH conditioning agent is that deposit fluid provides more stable PH, makes the material fully ionization under this PH that has fixed charge; Reaction time is 0～30 min; Reaction temperature is 0 ~ 90 ℃.
Embodiment 1
With the fiber device that dissociates the paper grade (stock) string evenly is separated into pulpous state, gets 2 g colloid LDHs and be dispersed in the 100 ml water, process deposit fluid for the first time; 2 g PAMAs are dissolved in the 100 ml water fully, process deposit fluid for the second time; The paper pulp for preparing is immersed in the deposit fluid first time, string is dispersed in the deposition reaction liquid, leave standstill 5 min through stirring; Sedimentation products is taken out for the first time, and the water cyclic washing immerses deposit fluid for the second time then, stirs string is dispersed in the deposition reaction liquid, leaves standstill 5 min; With the paper pulp that is configured to 2 % after the for the second time post-depositional string washing, copy paper then, the preparation fire retardant papers.
With the fiber device that dissociates the paper grade (stock) string evenly is separated into pulpous state, gets 2 g colloid LDHs and be dispersed in the 100 ml water, process deposit fluid for the first time; 1 g sodium alginate is dissolved in the 100 ml water fully, processes deposit fluid for the second time; 2 g LDHs are dispersed in the 100 ml water, process deposit fluid for the third time; The paper pulp for preparing is immersed in the deposit fluid first time, string is dispersed in the deposition reaction liquid, leave standstill 5 min through stirring; Sedimentation products is taken out for the first time, and the water cyclic washing immerses deposit fluid for the second time then, stirs string is dispersed in the deposition reaction liquid, leaves standstill 5 min; Sedimentation products is taken out for the second time, and the water cyclic washing immerses deposit fluid for the third time then, stirs string is dispersed in the deposition reaction liquid, leaves standstill 5 min; With the paper pulp that is configured to 2 % after the post-depositional string washing for the third time, copy paper then, the preparation fire retardant papers.
Embodiment 3
With the fiber device that dissociates the paper grade (stock) string evenly is separated into pulpous state, gets 2 g PAMCs and be dissolved in fully in the 100 ml water, dispose 10 parts, as odd number time deposit fluid; Get 1 g sodium alginate and be dissolved in fully in the 100 ml water, dispose 10 parts, as even number time deposit fluid; According to the method among embodiment 1 and the embodiment 2, string is carried out the multilayer deposition, with the paper pulp that is configured to 2 % after the post-depositional string washing, copy paper then, the preparation fire retardant papers.
Claims (5)
1. this patent relates to the method that a kind of multilayer deposition prepares fire retardant papers; It is characterized in that: it is to adopt molecular deposition that string is carried out the multilayer deposition; String being carried out flame-retardant modified, and is Fire resistant paper or board with the formed by plant fibre of modification, and its concrete steps are:
The first step evenly is separated into pulpous state with the fiber device that dissociates with the paper grade (stock) string, and is subsequent use;
Second step, get electropositive deposit and PH conditioning agent and be dissolved in conduct deposition reaction for the first time liquid in the water fully, subsequent use;
The 3rd step was immersed in second with the paper pulp for preparing in the first step and goes on foot in the deposit fluid of producing, and through stirring the paper fiber was dispersed in the deposition reaction liquid, left standstill certain hour;
The 4th step, the sedimentation products of last step preparation is taken out, the water cyclic washing, subsequent use;
The 5th step, get elecrtonegativity deposited material and PH conditioning agent and be dissolved in conduct deposition reaction for the second time liquid in the water fully, subsequent use;
The 6th step, the sedimentation products of the 4th step preparation is immersed the deposit fluid of the 5th step preparation, through stirring the paper fiber is dispersed in the deposit fluid, leave standstill certain hour;
In the 7th step, repeated for the 4th step;
In the 8th step, repeatedly repeat second and went on foot for the 8th step;
In the 9th step, the modified plant fibers that the last step obtains is copied paper, the preparation fire retardant papers.
2. a kind of multilayer deposition according to claim 1 prepares the method for fire retardant papers; It is characterized in that using molecular deposition, under suitable PH, make the component in the reactant liquor pass through the electrostatic attraction alternating deposit at the paper fiber surface; Form multi-layer fire-retarded deposited film; Realize combining closely of fire retardant and paper fiber, give the string excellent flame-retardant, simultaneously the mechanical strength of enhancement of plant fiber.
3. a kind of multilayer deposition according to claim 1 prepares the method for fire retardant papers; It is characterized in that described positive and negative electrical deposited material for have the positive and negative electrical material with fire retardation at aqueous phase, can be micromolecule electrolyte, big molecule polyelectrolyte or charged inorganic nano-particle.
4. as containing colloidal particle, boiomacromolecule and the polyelectrolyte of halogen, phosphorus, nitrogen, boron, metallic element; When carrying out the multilayer deposition, in whole deposition process, can use multiple deposit, a kind of deposited material can repeatedly be participated in deposition reaction and prepared fire retardant papers.
5. a kind of multilayer deposition according to claim 1 prepares the method for fire retardant papers, it is characterized in that the PH conditioning agent is that deposit fluid provides more stable PH, makes the material fully ionization under this PH that has fixed charge; Reaction time is 0～30 min; Reaction temperature is 0 ~ 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210208179.0A CN102704346B (en) | 2012-06-25 | 2012-06-25 | A kind of method that plane SH wave prepares fire retardant papers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210208179.0A CN102704346B (en) | 2012-06-25 | 2012-06-25 | A kind of method that plane SH wave prepares fire retardant papers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102704346A true CN102704346A (en) | 2012-10-03 |
| CN102704346B CN102704346B (en) | 2017-06-16 |
Family
ID=46897378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210208179.0A Active CN102704346B (en) | 2012-06-25 | 2012-06-25 | A kind of method that plane SH wave prepares fire retardant papers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102704346B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0718388A2 (en) * | 1994-12-12 | 1996-06-26 | Erika Balle | Fire-protective substance and method for producing and depositing of a fire-protective substance |
| JP2002212899A (en) * | 2000-11-13 | 2002-07-31 | Hymo Corp | Method for producing combination paper |
| CN1995471A (en) * | 2006-12-14 | 2007-07-11 | 湖南工业大学 | Pulse deposition method for nano crystalline chromium plating layer using trivalent chromium |
-
2012
- 2012-06-25 CN CN201210208179.0A patent/CN102704346B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0718388A2 (en) * | 1994-12-12 | 1996-06-26 | Erika Balle | Fire-protective substance and method for producing and depositing of a fire-protective substance |
| JP2002212899A (en) * | 2000-11-13 | 2002-07-31 | Hymo Corp | Method for producing combination paper |
| CN1995471A (en) * | 2006-12-14 | 2007-07-11 | 湖南工业大学 | Pulse deposition method for nano crystalline chromium plating layer using trivalent chromium |
Non-Patent Citations (2)
| Title |
|---|
| 王高升等: ""基于交替沉积技术的纸浆纤维工程"", 《中华纸业》 * |
| 王高升等: ""聚合电解质在纸浆纤维表面多层沉积的研究"", 《中国造纸学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102704346B (en) | 2017-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103215844B (en) | Modification method for inorganic fibers | |
| CN103352396B (en) | A kind of method being prepared crystal whisker of gypsum by the modification of organic/inorganic compound coating | |
| CN103242459B (en) | Crosslinked amphoteric starch and preparation method thereof | |
| CN103147355B (en) | A kind of preparation method of biomass nano fiber conductive paper | |
| CN103276626B (en) | Paper technology | |
| CN107524043B (en) | A kind of enhancing paper base and the preparation method and application thereof of stacking assembling | |
| CN105339547B (en) | Composition of the processing cellulose fibre to produce the method for the composition containing microfibrillated cellulose and be produced according to the method | |
| Ling et al. | Core–shell structure γ-MnO2-PANI carbon fiber paper-based flexible electrode material for high-performance supercapacitors | |
| CN111074669A (en) | Bacterial cellulose-plant fiber composite conductive paper and preparation method and application thereof | |
| CN102898643A (en) | Preparation method of modified polyarylether (PAE) resin | |
| CN106590058A (en) | Calcium carbonate-starch-based papermaking filler and semi-drying preparation process thereof | |
| CN104099808A (en) | Treatment method for waste paper pulp and papermaking sizing material | |
| CN115044993A (en) | High-charge-density phosphorylated cellulose nanofiber and hot-dipping preparation method | |
| CN106400595A (en) | Method for preparing cellulose-based flexible conductive paper | |
| CN105884908B (en) | A kind of preparation method of carboxylated cellulose element nanoparticle | |
| CN102660050A (en) | Method for improving mechanical property of cellulose acetate | |
| CN104213196A (en) | Preparation method of water-insoluble gypsum whiskers | |
| CN102704327B (en) | A kind of preparation method of LDHs fire retardant papers | |
| CN105256641A (en) | Modified inorganic fibers, modification method and applications | |
| CN108103839B (en) | Preparation method of modified calcium sulfate whisker papermaking filler | |
| CN114263069A (en) | Low-voltage low-loss electrolytic capacitor paper and preparation method and application thereof | |
| CN102704346A (en) | Method for preparing flame retardant paper by multi-layered sedimentation | |
| CN102433794A (en) | Preparation of oxidative degradation starch-based sticking agent | |
| CN104631199A (en) | Aramid paper with potassium titanate whisker, and preparation method of aramid paper | |
| CN102943388B (en) | Method for preparing antistatic polyester fabric by in-situ polymerization reaction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Yuejun Inventor after: Mao Long Inventor after: Hao Zongxian Inventor after: Liu Xiaochao Inventor after: Liu Yiwu Inventor before: Liu Yuejun Inventor before: Hao Zongxian Inventor before: Liu Yiwu |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170221 Address after: 361024 Xiamen science and technology road, Jimei District, Fujian, No. 600 Applicant after: Xiamen University of Technology Address before: 412007 Taishan West Road in Hunan province Zhuzhou city Tianyuan District No. 88 and No. 436 at the Hunan University of Technology Applicant before: Hunan University of Technology |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170228 Address after: 412007 Hunan, Tianyuan, Taishan West Road, Hunan University of Technology,, No. 306, building envelope printing laboratory room Applicant after: Hunan University of Technology Address before: 361024 Xiamen science and technology road, Jimei District, Fujian, No. 600 Applicant before: Xiamen University of Technology |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170329 Address after: 361024 Xiamen science and technology road, Jimei District, Fujian, No. 600 Applicant after: Xiamen University of Technology Address before: 412007 Hunan, Tianyuan, Taishan West Road, Hunan University of Technology,, No. 306, building envelope printing laboratory room Applicant before: Hunan University of Technology |
|
| GR01 | Patent grant |