CN110467546B - 一种制备间苯二亚甲基二异氰酸酯的方法 - Google Patents
一种制备间苯二亚甲基二异氰酸酯的方法 Download PDFInfo
- Publication number
- CN110467546B CN110467546B CN201811545076.7A CN201811545076A CN110467546B CN 110467546 B CN110467546 B CN 110467546B CN 201811545076 A CN201811545076 A CN 201811545076A CN 110467546 B CN110467546 B CN 110467546B
- Authority
- CN
- China
- Prior art keywords
- xylylene
- catalyst
- xylylene diisocyanate
- organic solvent
- thermal decomposition
- 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.)
- Active
Links
- RTTZISZSHSCFRH-UHFFFAOYSA-N 1,3-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC(CN=C=O)=C1 RTTZISZSHSCFRH-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005979 thermal decomposition reaction Methods 0.000 claims abstract description 20
- 239000003960 organic solvent Substances 0.000 claims abstract description 18
- -1 m-xylylene diamino ethyl formate Chemical compound 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 6
- WBJINCZRORDGAQ-UHFFFAOYSA-N formic acid ethyl ester Natural products CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 239000003054 catalyst Substances 0.000 claims description 21
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims description 16
- FSPRIMKLIVYESK-UHFFFAOYSA-N [3-(carbamoyloxymethyl)phenyl]methyl carbamate Chemical compound NC(=O)OCC1=CC=CC(COC(N)=O)=C1 FSPRIMKLIVYESK-UHFFFAOYSA-N 0.000 claims description 14
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 5
- 239000011787 zinc oxide Substances 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- 239000007810 chemical reaction solvent Substances 0.000 abstract description 4
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 22
- 239000000047 product Substances 0.000 description 14
- 239000002904 solvent Substances 0.000 description 11
- 239000002994 raw material Substances 0.000 description 7
- JNWPFPFXZSAHGD-UHFFFAOYSA-N 6-carbamoyloxyhexyl carbamate Chemical compound NC(=O)OCCCCCCOC(N)=O JNWPFPFXZSAHGD-UHFFFAOYSA-N 0.000 description 5
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- 239000012948 isocyanate Substances 0.000 description 4
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 3
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 description 3
- 125000005233 alkylalcohol group Chemical group 0.000 description 3
- 229910000410 antimony oxide Inorganic materials 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 229940008841 1,6-hexamethylene diisocyanate Drugs 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XTBFPVLHGVYOQH-UHFFFAOYSA-N methyl phenyl carbonate Chemical compound COC(=O)OC1=CC=CC=C1 XTBFPVLHGVYOQH-UHFFFAOYSA-N 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- INFAFDAGJMSJSD-UHFFFAOYSA-N C(C)OC(NCC1=CC(=CC=C1)CNC(O)=O)=O Chemical compound C(C)OC(NCC1=CC(=CC=C1)CNC(O)=O)=O INFAFDAGJMSJSD-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 238000007098 aminolysis reaction Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910001038 basic metal oxide Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000007233 catalytic pyrolysis Methods 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000002638 heterogeneous catalyst Substances 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 125000006839 xylylene group Chemical group 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/04—Preparation of derivatives of isocyanic acid from or via carbamates or carbamoyl halides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810442723 | 2018-05-10 | ||
CN2018104427235 | 2018-05-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110467546A CN110467546A (zh) | 2019-11-19 |
CN110467546B true CN110467546B (zh) | 2021-03-19 |
Family
ID=68504622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811545076.7A Active CN110467546B (zh) | 2018-05-10 | 2018-12-17 | 一种制备间苯二亚甲基二异氰酸酯的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110467546B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114478321A (zh) * | 2022-04-06 | 2022-05-13 | 中国科学院过程工程研究所 | 中间体间苯二亚甲基二氨基甲酸乙酯溶液分离精制净化的方法、装置及用途 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112574067B (zh) * | 2021-02-24 | 2021-07-23 | 富海(东营)新材料科技有限公司 | 非光气制备高纯度间苯二亚甲基二异氰酸酯的方法 |
CN113024417B (zh) * | 2021-05-27 | 2021-08-31 | 中国科学院过程工程研究所 | 一种制备异氰酸酯中强化分离的方法及装置 |
CN114315649B (zh) * | 2022-03-15 | 2022-05-24 | 中国科学院过程工程研究所 | 一种利用熔融结晶提纯苯二亚甲基二氨基甲酸乙酯的方法 |
CN114768708B (zh) * | 2022-03-29 | 2024-08-13 | 中国科学院过程工程研究所 | 一种制备间苯二亚甲基二异氰酸酯的装置和方法 |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4081472A (en) * | 1975-08-07 | 1978-03-28 | Mitsui Toatsu Chemicals Inc. | Process for preparation of aromatic isocyanates |
JPS5488201A (en) * | 1977-12-22 | 1979-07-13 | Mitsubishi Chem Ind Ltd | Preparation of isocyanate from carbamic acid esters |
US4330479A (en) * | 1979-10-20 | 1982-05-18 | Basf Aktiengesellschaft | Thermal decomposition of aryl urethanes |
JPS57158747A (en) * | 1981-03-26 | 1982-09-30 | Asahi Chem Ind Co Ltd | Preparation of isocyanate |
GB2113673A (en) * | 1982-01-28 | 1983-08-10 | Exxon Research Engineering Co | Production of isocyanates from esters of aromatic carbamic acids (urethanes) |
JPH02231461A (ja) * | 1989-03-06 | 1990-09-13 | Mitsubishi Gas Chem Co Inc | キシレンジイソシアネートの製造方法 |
EP0436800A1 (en) * | 1989-12-28 | 1991-07-17 | Mitsubishi Gas Chemical Company, Inc. | Process for producing isocyanate compound |
EP0492145A2 (en) * | 1990-12-20 | 1992-07-01 | Mitsubishi Gas Chemical Company, Inc. | Process for producing xylylene diisocyanate |
JPH06145132A (ja) * | 1992-11-06 | 1994-05-24 | Mitsubishi Gas Chem Co Inc | 脂肪族系イソシアネートの製造方法 |
JPH0987239A (ja) * | 1995-09-22 | 1997-03-31 | Mitsubishi Gas Chem Co Inc | イソシアネート類の製造法 |
CN102653517A (zh) * | 2011-03-02 | 2012-09-05 | 中国科学院过程工程研究所 | 一种由氨基甲酸酯制备异氰酸酯的方法 |
-
2018
- 2018-12-17 CN CN201811545076.7A patent/CN110467546B/zh active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4081472A (en) * | 1975-08-07 | 1978-03-28 | Mitsui Toatsu Chemicals Inc. | Process for preparation of aromatic isocyanates |
JPS5488201A (en) * | 1977-12-22 | 1979-07-13 | Mitsubishi Chem Ind Ltd | Preparation of isocyanate from carbamic acid esters |
US4330479A (en) * | 1979-10-20 | 1982-05-18 | Basf Aktiengesellschaft | Thermal decomposition of aryl urethanes |
JPS57158747A (en) * | 1981-03-26 | 1982-09-30 | Asahi Chem Ind Co Ltd | Preparation of isocyanate |
GB2113673A (en) * | 1982-01-28 | 1983-08-10 | Exxon Research Engineering Co | Production of isocyanates from esters of aromatic carbamic acids (urethanes) |
JPH02231461A (ja) * | 1989-03-06 | 1990-09-13 | Mitsubishi Gas Chem Co Inc | キシレンジイソシアネートの製造方法 |
EP0436800A1 (en) * | 1989-12-28 | 1991-07-17 | Mitsubishi Gas Chemical Company, Inc. | Process for producing isocyanate compound |
EP0492145A2 (en) * | 1990-12-20 | 1992-07-01 | Mitsubishi Gas Chemical Company, Inc. | Process for producing xylylene diisocyanate |
JPH06145132A (ja) * | 1992-11-06 | 1994-05-24 | Mitsubishi Gas Chem Co Inc | 脂肪族系イソシアネートの製造方法 |
JPH0987239A (ja) * | 1995-09-22 | 1997-03-31 | Mitsubishi Gas Chem Co Inc | イソシアネート類の製造法 |
CN102653517A (zh) * | 2011-03-02 | 2012-09-05 | 中国科学院过程工程研究所 | 一种由氨基甲酸酯制备异氰酸酯的方法 |
Non-Patent Citations (4)
Title |
---|
MDC分解法制备MDI的研究进展;秦昌;《山东化工》;20090615(第06期);第20-23页 * |
低沸点溶剂加压催化热解制备六亚甲基-1,6-二异氰酸酯;覃宁波等;《石油化工》;20131015(第10期);第1142页 * |
氨基甲酸酯热分解制备异氰酸酯的研究进展;孙彦林等;《精细石油化工》;20090318(第02期);第77-79页 * |
非光气法合成二苯基甲烷二异氰酸酯的研究进展;王庆印等;《合成化学》;20130220(第01期);第114-123页 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114478321A (zh) * | 2022-04-06 | 2022-05-13 | 中国科学院过程工程研究所 | 中间体间苯二亚甲基二氨基甲酸乙酯溶液分离精制净化的方法、装置及用途 |
CN114478321B (zh) * | 2022-04-06 | 2022-07-26 | 中国科学院过程工程研究所 | 中间体间苯二亚甲基二氨基甲酸乙酯溶液分离精制净化的方法、装置及用途 |
Also Published As
Publication number | Publication date |
---|---|
CN110467546A (zh) | 2019-11-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110467546B (zh) | 一种制备间苯二亚甲基二异氰酸酯的方法 | |
CN114105825A (zh) | 一种1,5-戊二异氰酸酯的制备方法 | |
WO2020024430A1 (zh) | 一种双氟磺酰亚胺及其锂盐的制备方法 | |
CN108558800A (zh) | 一种低成本的2,5-呋喃二甲酸的工业化制备方法 | |
CN111825572B (zh) | 一种成盐-雾化光气化法制备异氰酸酯的方法 | |
KR101540636B1 (ko) | 산화세륨 촉매를 이용한 n,n′- 치환 우레아의 제조방법 | |
CN114478321B (zh) | 中间体间苯二亚甲基二氨基甲酸乙酯溶液分离精制净化的方法、装置及用途 | |
CN102964272B (zh) | 一种在液相中非均相催化热解制备六亚甲基1,6-二异氰酸酯(hdi)的方法 | |
US8716517B2 (en) | Method for producing diisocyanates by gas-phase phosgenation | |
CN114031504A (zh) | 一种制备n,n-二甲基环己胺的方法 | |
CN115667191A (zh) | 氟乙烯的制造方法 | |
CN108997148B (zh) | 可回收套用的n-丁基二乙醇胺的制备方法 | |
CN113831264B (zh) | 一种制备1,6-六亚甲基二氨基甲酸乙酯的方法 | |
CN112824376B (zh) | 一种气相法制备低水解氯含量异氰酸酯的方法 | |
CN108339566B (zh) | 一种金属负载型催化剂及其制备方法和应用 | |
US20220281808A1 (en) | Preparation method for diphenylmethane diisocyanate | |
TW202031762A (zh) | 一種自回收聚碳酸酯製備異氰酸酯之方法 | |
CN111039802A (zh) | 芳香二醚二胺的制备方法 | |
CN111807967B (zh) | 甲基环己三胺及甲基环己烷三异(硫)氰酸酯的制备方法 | |
CN114768708B (zh) | 一种制备间苯二亚甲基二异氰酸酯的装置和方法 | |
CN109206316A (zh) | 氨基保护基氯甲酸苄酯的制备方法 | |
CN111004150B (zh) | 一种取代苯甲酰异氰酸酯的合成方法 | |
CN113105354B (zh) | 一种无催化剂制备n-(4-羟基-3-甲氧基苄基)壬酰胺的方法 | |
CN112591751B (zh) | 一种氧硫化碳的合成方法 | |
JPH11310567A (ja) | 脂肪族イソシアネート化合物の製造法 |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20240718 Address after: 277500 residence of Mushi Town, Tengzhou City, Zaozhuang City, Shandong Province (Mushi Industrial Park) Patentee after: Lianhong New Materials Technology Co.,Ltd. Country or region after: China Address before: 100190 north two street, Zhongguancun, Haidian District, Beijing, 1 Patentee before: Institute of Process Engineering, Chinese Academy of Sciences Country or region before: China |
|
TR01 | Transfer of patent right |
Effective date of registration: 20241008 Address after: No. 1688 Kesheng Road, Mushi Town, Tengzhou City, Shandong Province, China (with multiple photos at one location) Patentee after: Lianhong Ruisheng (Shandong) Special Materials Co.,Ltd. Country or region after: China Address before: 277500 residence of Mushi Town, Tengzhou City, Zaozhuang City, Shandong Province (Mushi Industrial Park) Patentee before: Lianhong New Materials Technology Co.,Ltd. Country or region before: China |