CN107902988A - 一种高粘接强度防水益胶泥的制备方法 - Google Patents
一种高粘接强度防水益胶泥的制备方法 Download PDFInfo
- Publication number
- CN107902988A CN107902988A CN201711083290.0A CN201711083290A CN107902988A CN 107902988 A CN107902988 A CN 107902988A CN 201711083290 A CN201711083290 A CN 201711083290A CN 107902988 A CN107902988 A CN 107902988A
- Authority
- CN
- China
- Prior art keywords
- parts
- starch
- adhesive
- mixed
- temperature
- 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
- 239000004927 clay Substances 0.000 title claims abstract description 36
- 230000008901 benefit Effects 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 33
- 229920002472 Starch Polymers 0.000 claims abstract description 30
- 239000008107 starch Substances 0.000 claims abstract description 30
- 235000019698 starch Nutrition 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 25
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 16
- 235000013312 flour Nutrition 0.000 claims abstract description 11
- 239000004816 latex Substances 0.000 claims abstract description 11
- 229920000126 latex Polymers 0.000 claims abstract description 11
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 10
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 10
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 6
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004576 sand Substances 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 29
- 229920002261 Corn starch Polymers 0.000 claims description 24
- 239000008120 corn starch Substances 0.000 claims description 24
- 229940099112 cornstarch Drugs 0.000 claims description 24
- 238000000855 fermentation Methods 0.000 claims description 24
- 230000004151 fermentation Effects 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 229920000881 Modified starch Polymers 0.000 claims description 15
- 235000019426 modified starch Nutrition 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- 238000009835 boiling Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 12
- 239000000706 filtrate Substances 0.000 claims description 12
- 239000011812 mixed powder Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 238000004513 sizing Methods 0.000 claims description 12
- 239000004368 Modified starch Substances 0.000 claims description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- 239000012295 chemical reaction liquid Substances 0.000 claims description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 8
- 239000011398 Portland cement Substances 0.000 claims description 8
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 8
- 229930006000 Sucrose Natural products 0.000 claims description 8
- 239000000908 ammonium hydroxide Substances 0.000 claims description 8
- 239000005720 sucrose Substances 0.000 claims description 8
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 7
- 239000003643 water by type Substances 0.000 claims description 7
- 235000016068 Berberis vulgaris Nutrition 0.000 claims description 6
- 241000335053 Beta vulgaris Species 0.000 claims description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000010025 steaming Methods 0.000 claims description 6
- RINCXYDBBGOEEQ-UHFFFAOYSA-N succinic anhydride Chemical class O=C1CCC(=O)O1 RINCXYDBBGOEEQ-UHFFFAOYSA-N 0.000 claims description 6
- 108010028688 Isoamylase Proteins 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 5
- -1 hydroxypropyl methyl Chemical group 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 17
- 238000004078 waterproofing Methods 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 9
- 239000004568 cement Substances 0.000 abstract description 9
- 239000000853 adhesive Substances 0.000 abstract description 8
- 238000004132 cross linking Methods 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 244000005700 microbiome Species 0.000 abstract description 3
- 239000005011 phenolic resin Substances 0.000 abstract description 3
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004035 construction material Substances 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract description 2
- 229940014800 succinic anhydride Drugs 0.000 abstract description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 abstract description 2
- 239000008158 vegetable oil Substances 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 description 8
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 235000019198 oils Nutrition 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 150000001241 acetals Chemical class 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000010773 plant oil Substances 0.000 description 1
- 239000011414 polymer cement Substances 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711083290.0A CN107902988B (zh) | 2017-11-07 | 2017-11-07 | 一种高粘接强度防水益胶泥的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711083290.0A CN107902988B (zh) | 2017-11-07 | 2017-11-07 | 一种高粘接强度防水益胶泥的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107902988A true CN107902988A (zh) | 2018-04-13 |
CN107902988B CN107902988B (zh) | 2020-08-11 |
Family
ID=61843493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711083290.0A Active CN107902988B (zh) | 2017-11-07 | 2017-11-07 | 一种高粘接强度防水益胶泥的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107902988B (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108623258A (zh) * | 2018-05-25 | 2018-10-09 | 万玉梅 | 一种耐油混凝土 |
CN108793870A (zh) * | 2018-06-20 | 2018-11-13 | 罗国球 | 一种高粘接强度防水益胶泥的制备方法 |
CN109336463A (zh) * | 2018-10-29 | 2019-02-15 | 俞小峰 | 一种防水型高粘接强度胶泥的制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103803911A (zh) * | 2012-11-15 | 2014-05-21 | 青岛保利康新材料有限公司 | 一种填缝剂 |
CN104529331A (zh) * | 2014-12-12 | 2015-04-22 | 深圳市利安建材发展有限公司 | 防水型高分子益胶泥 |
CN106431123A (zh) * | 2015-08-13 | 2017-02-22 | 姹ゅ浆 | 新型高分子胶泥 |
-
2017
- 2017-11-07 CN CN201711083290.0A patent/CN107902988B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103803911A (zh) * | 2012-11-15 | 2014-05-21 | 青岛保利康新材料有限公司 | 一种填缝剂 |
CN104529331A (zh) * | 2014-12-12 | 2015-04-22 | 深圳市利安建材发展有限公司 | 防水型高分子益胶泥 |
CN106431123A (zh) * | 2015-08-13 | 2017-02-22 | 姹ゅ浆 | 新型高分子胶泥 |
Non-Patent Citations (2)
Title |
---|
李文彬等: "《精细化工生产技术》", 31 January 2014, 中央广播电视大学出版社 * |
段久芳等: "《天然高分子材料》", 31 March 2016, 华中科技大学出版社 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108623258A (zh) * | 2018-05-25 | 2018-10-09 | 万玉梅 | 一种耐油混凝土 |
CN108623258B (zh) * | 2018-05-25 | 2021-02-19 | 桐庐宏基源混凝土有限公司 | 一种耐油混凝土 |
CN108793870A (zh) * | 2018-06-20 | 2018-11-13 | 罗国球 | 一种高粘接强度防水益胶泥的制备方法 |
CN109336463A (zh) * | 2018-10-29 | 2019-02-15 | 俞小峰 | 一种防水型高粘接强度胶泥的制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN107902988B (zh) | 2020-08-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101328030B (zh) | 水硬性组合物 | |
CN101074355B (zh) | 水泥基渗透结晶型防水材料及其制备方法 | |
CN100391889C (zh) | 保温干粉砂浆及其制备方法 | |
CN103058619B (zh) | 一种掺有矿粉的聚合物防水砂浆及其使用方法 | |
CN107805028B (zh) | 一种高强度防水胶凝材料的制备方法 | |
CN104945997A (zh) | 一种外墙柔性防水腻子粉及其制备方法 | |
CN101381533A (zh) | 一种外墙柔性粉状腻子的制备方法 | |
CN101348357A (zh) | 外墙外保温粘结砂浆 | |
CN1847188A (zh) | 一种墙体保温胶粉材料及其制备方法和使用方法 | |
CN107902988A (zh) | 一种高粘接强度防水益胶泥的制备方法 | |
CN105110758A (zh) | 一种利用玉米秸秆和氯氧镁水泥复合制备建筑保温材料的方法 | |
CN104591612A (zh) | 保温建筑砂浆 | |
CN106800384A (zh) | 一种复合改性改善氯氧镁胶凝材料性能的方法 | |
CN105218025A (zh) | 一种高分子益胶泥 | |
CN107365125A (zh) | 一种高强度防水填缝剂的制备方法 | |
CN105198294A (zh) | 一种赤泥基碱激发胶凝材料制备的建筑保温砂浆 | |
CN101508539B (zh) | 聚合物胶粉及其应用方法 | |
CN104844091A (zh) | 一种适用于生土砌块的生土砌筑粘结材料及其制备方法 | |
CN108546039A (zh) | 耐火饰面砂浆复合层 | |
CN107446404A (zh) | 一种外保温墙面防水柔性材料 | |
CN101348358B (zh) | 外墙外保温保护砂浆 | |
CN111410861A (zh) | 双组分保温腻子及其制备方法、施工方法和应用 | |
CN109081656B (zh) | 一种用于墙面甩浆的浆料及其制备方法 | |
KR100978289B1 (ko) | 바텀애쉬와 폐유리로 제조된 저흡수 경량골재를 사용하여 만든 단열모르타르의 제조방법 | |
CN113372083B (zh) | 一种基于氧化石墨烯基层状材料改性的自流平砂浆及其制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20180419 Address after: 213000 room 2-2208, Wanda Plaza, Xinbei District, Changzhou, Jiangsu Applicant after: CHANGZHOU LANSEN ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. Address before: 213102 No. 16 Huayang North Road, Tianning District, Changzhou, Jiangsu Applicant before: CHANGZHOU FULONG INDUSTRIAL CONTROL EQUIPMENT CO.,LTD. |
|
TA01 | Transfer of patent application right | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20200714 Address after: 510080 Guangzhou Baiyun District, Guangdong Province, 1633 Beitai Road, No. 2 Kexing Road, Guangzhou Private Science Park Applicant after: DESHIBAO (GUANGZHOU) TECHNOLOGY Co.,Ltd. Address before: 213000 room 2-2208, Wanda Plaza, Xinbei District, Changzhou, Jiangsu Applicant before: CHANGZHOU LANSEN ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. |
|
GR01 | Patent grant | ||
GR01 | Patent grant |