SG74700A1 - Preparation of sterically hindered amine ethers - Google Patents
Preparation of sterically hindered amine ethersInfo
- Publication number
- SG74700A1 SG74700A1 SG1999000492A SG1999000492A SG74700A1 SG 74700 A1 SG74700 A1 SG 74700A1 SG 1999000492 A SG1999000492 A SG 1999000492A SG 1999000492 A SG1999000492 A SG 1999000492A SG 74700 A1 SG74700 A1 SG 74700A1
- Authority
- SG
- Singapore
- Prior art keywords
- preparation
- hindered amine
- sterically hindered
- amine ethers
- ethers
- Prior art date
Links
- -1 amine ethers Chemical class 0.000 title 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/36—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D211/56—Nitrogen atoms
- C07D211/58—Nitrogen atoms attached in position 4
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/92—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with a hetero atom directly attached to the ring nitrogen atom
- C07D211/94—Oxygen atom, e.g. piperidine N-oxide
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing three or more hetero rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0066—Flame-proofing or flame-retarding additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3435—Piperidines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34926—Triazines also containing heterocyclic groups other than triazine groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
- C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
- C09K15/30—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing heterocyclic ring with at least one nitrogen atom as ring member
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Hydrogenated Pyridines (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT98MI000366A ITMI980366A1 (en) | 1998-02-25 | 1998-02-25 | PREPARATION OF STERICALLY PREVENTED AMINE ETHERS |
| US10471898A | 1998-06-25 | 1998-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SG74700A1 true SG74700A1 (en) | 2000-08-22 |
Family
ID=26331570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG1999000492A SG74700A1 (en) | 1998-02-25 | 1999-02-06 | Preparation of sterically hindered amine ethers |
Country Status (17)
| Country | Link |
|---|---|
| JP (2) | JP4798815B2 (en) |
| KR (1) | KR100561146B1 (en) |
| CN (2) | CN1202085C (en) |
| AR (1) | AR015238A1 (en) |
| BE (1) | BE1014990A5 (en) |
| BR (1) | BR9900807B1 (en) |
| CA (2) | CA2643170C (en) |
| CZ (1) | CZ302752B6 (en) |
| DE (2) | DE19907945B4 (en) |
| ES (1) | ES2159462B1 (en) |
| FR (1) | FR2777004B1 (en) |
| GB (1) | GB2334717B (en) |
| ID (1) | ID23225A (en) |
| MY (1) | MY123467A (en) |
| NL (1) | NL1011394C2 (en) |
| RU (1) | RU2224758C2 (en) |
| SG (1) | SG74700A1 (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH693416A5 (en) | 1998-03-09 | 2003-07-31 | Ciba Sc Holding Ag | 1-Alkoxypolyalkylpiperidinderivate and their use as polymerization regulators. |
| JP3540759B2 (en) * | 2000-04-06 | 2004-07-07 | 三菱レイヨン株式会社 | Flame retardant polypropylene fiber and method for producing the same |
| JP2004083913A (en) * | 2000-04-06 | 2004-03-18 | Mitsubishi Rayon Co Ltd | Flame retardant polypropylene film |
| TW572896B (en) * | 2000-05-26 | 2004-01-21 | Ciba Sc Holding Ag | Process for the synthesis of amine ethers from secondary amino oxides |
| EP1038912A3 (en) * | 2000-06-22 | 2000-12-27 | Ciba SC Holding AG | High molecular weight hindered hydrocarbyloxyamine stabilizers |
| TWI273115B (en) * | 2000-12-12 | 2007-02-11 | Ciba Sc Holding Ag | Improved weatherability of flame retardant polyolefin |
| TW200407307A (en) * | 2001-11-26 | 2004-05-16 | Ciba Sc Holding Ag | Process for the synthesis of amine ethers from secondary amino oxides |
| ATE420136T1 (en) * | 2002-04-17 | 2009-01-15 | Ciba Holding Inc | FLAME RETARDANT POLYMER COMPOSITION WITH HYDROXYLAMIN ESTERS |
| JP4167522B2 (en) * | 2002-05-31 | 2008-10-15 | サンテーラ株式会社 | Olefin resin composition and laminated film comprising the same |
| CN101010369B (en) * | 2004-08-31 | 2010-12-22 | 西巴特殊化学品控股有限公司 | Stabilization of Organic Materials |
| PL1807395T3 (en) | 2004-11-02 | 2016-06-30 | Basf Se | Process for the synthesis of n-alkoxyamines |
| JP5649822B2 (en) * | 2006-11-23 | 2015-01-07 | チバ ホールディング インコーポレーテッドＣｉｂａ Ｈｏｌｄｉｎｇ Ｉｎｃ． | Method for producing N-allyl sterically hindered tertiary amine |
| CN101990555A (en) * | 2007-12-21 | 2011-03-23 | 巴斯夫欧洲公司 | Nano structured uv absorbers |
| WO2011020760A1 (en) * | 2009-08-18 | 2011-02-24 | Basf Se | Photovoltaic module with stabilized polymeric encapsulant |
| DK2475655T3 (en) * | 2009-09-10 | 2018-01-15 | Basf Se | STERICALLY HINDED AMIN STABILIZER |
| CN103153985A (en) | 2010-10-20 | 2013-06-12 | 巴斯夫欧洲公司 | Multifunctional hindered amine light stabilizer |
| EP2514800B2 (en) | 2011-04-21 | 2018-03-07 | Merck Patent GmbH | Compounds and liquid crystalline medium |
| WO2018069530A1 (en) | 2016-10-14 | 2018-04-19 | Basf Se | Stabilizer composition |
| CA3055864A1 (en) * | 2017-03-28 | 2018-10-04 | Basf Se | Light stabilizer mixture |
| CN109503554B (en) * | 2018-12-13 | 2020-10-30 | 天津利安隆新材料股份有限公司 | Preparation method of polymerization type hindered amine light stabilizer HA-88 |
| IL286101B2 (en) * | 2019-03-08 | 2025-10-01 | Basf Se | Sterically hindered amine stabilizer mixtures |
| CN112126060B (en) * | 2019-06-25 | 2022-05-31 | 北京天罡助剂有限责任公司 | A kind of polymeric polymer sterically hindered amine and preparation method thereof |
| CN113354813B (en) * | 2021-06-02 | 2023-07-04 | 宿迁联盛科技股份有限公司 | Preparation method of low-alkalinity hindered amine light stabilizer NOR371 |
| CN119255982A (en) | 2022-04-04 | 2025-01-03 | 泽达创新咨询公司 | Preparation method of sterically hindered nitroxyl ether |
| WO2025067782A1 (en) | 2023-09-27 | 2025-04-03 | Geneuschem Ag | Preparation of n-alkoxyamine hals from corresponding hydroxylamines |
Family Cites Families (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1215462B (en) * | 1987-05-07 | 1990-02-14 | Ciba Geigy Spa | PIPERIDIN COMPOUNDS USABLE AS LIGHT, HEAT AND OXIDATION STABILIZERS FOR SYNTHETIC POLYMERS. |
| US4824884A (en) * | 1987-08-12 | 1989-04-25 | Pennwalt Corporation | Cyclic anhydride derivatives of hydrazide functionalized hindered amine light stabilizers |
| US5124378A (en) * | 1987-09-21 | 1992-06-23 | Ciba-Geigy Corporation | Stabilization of ambient cured coatings |
| ES2065924T5 (en) * | 1987-09-21 | 2002-12-16 | Ciba Sc Holding Ag | STABILIZERS BASED ON N-SUBSTITUTED BLOCKED AMIDAS. |
| US5204473A (en) * | 1987-09-21 | 1993-04-20 | Ciba-Geigy Corporation | O-substituted N-hydroxy hindered amine stabilizers |
| US5096950A (en) * | 1988-10-19 | 1992-03-17 | Ciba-Geigy Corporation | Polyolefin compositions stabilized with NOR-substituted hindered amines |
| US4921962A (en) * | 1988-10-19 | 1990-05-01 | Ciba-Geigy Corporation | Process for preparing N-hydrocarbyloxy derivatives of sterically hindered amines |
| US5004770A (en) * | 1988-10-19 | 1991-04-02 | Ciba-Geigy Corporation | Polymeric substrates stabilized with N-substituted hindered amines |
| US4978699A (en) * | 1988-10-24 | 1990-12-18 | Atochem North America, Inc. | Light stabilizing flame retardants |
| BR8907375A (en) * | 1989-02-13 | 1991-04-30 | Atochem North America | COMPOUND, PROCESS FOR THE PREPARATION OF THE SAME, AND PROCESSES FOR THE STABILIZATION OF A COMPOSITION OF NATURAL OR SYNTHETIC POLYMER AND POLYPROPYLENE |
| EP0389419B1 (en) * | 1989-03-21 | 1996-05-01 | Ciba-Geigy Ag | Non-migrating 1-hydrocarbyloxy hindered amine compounds as polymer stabilizers |
| EP0389428A3 (en) * | 1989-03-21 | 1991-10-09 | Ciba-Geigy Ag | N,n-bis(l-hydroxycarbyloxy-2,2,6,6-tetramethyl-piperidin-4-yl) amino triazines and stabilized compositions |
| DE69012617T2 (en) * | 1989-03-21 | 1995-01-26 | Ciba Geigy Ag | Azo compounds with a sterically hindered amino group of low basicity. |
| EP0389420B1 (en) * | 1989-03-21 | 1994-09-21 | Ciba-Geigy Ag | Ethylenically unsaturated compounds containing 1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidine moieties, and polymers, copolymers and stabilized compositions |
| IT1246170B (en) * | 1990-07-24 | 1994-11-16 | Ciba Geigy Spa | POLYPROPYLENE STABILIZING COMPOSITION INCLUDING TRIAZINIC COMPOUNDS CONTAINING PIPERIDINIC GROUPS AND METALLIC COMPOUNDS |
| US5180830A (en) * | 1991-04-24 | 1993-01-19 | Himont Incorporated | Process for preparing hindered amine light stabilizers |
| US5216156A (en) * | 1992-05-05 | 1993-06-01 | Ciba-Geigy Corporation | Non-migrating 1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidine 1,3,5-triazine derivatives |
| IT1263993B (en) * | 1993-04-05 | 1996-09-06 | Ciba Geigy Spa | PIPERIDIN-TRIAZIN COMPOUNDS SUITABLE FOR USE AS STABILIZERS FOR ORGANIC MATERIALS |
| TW270131B (en) * | 1993-07-13 | 1996-02-11 | Ciba Geigy | |
| IT1264946B1 (en) * | 1993-07-16 | 1996-10-17 | Ciba Geigy Spa | DERIVATIVES OF 2,2,6,6-TETRAMETHYL-4-PIPERIDINOL USEFUL AS LIGHT AND OXIDATION STABILIZERS FOR ORGANIC MATERIALS. |
| US5393812A (en) * | 1993-08-31 | 1995-02-28 | Hercules Incorporated | Flame retardant, light stable composition |
| US5380828A (en) * | 1993-10-05 | 1995-01-10 | Ciba-Geigy Corporation | Azodicarboxylic acid derivatives containing hindered amine moieties as polymer stabilizers |
| EP0858449A1 (en) * | 1995-10-12 | 1998-08-19 | Ciba SC Holding AG | Thermally stable hindered amines as stabilizers |
| EP0782994B1 (en) * | 1995-12-04 | 2003-02-05 | Ciba SC Holding AG | Block oligomers containing 2,2,6,6-tetramethyl-4-piperidyl groups as stabilizers for organic materials |
| US6046304A (en) * | 1995-12-04 | 2000-04-04 | Ciba Specialty Chemicals Corporation | Block oligomers containing 2,2,6,6-tetramethyl-4-piperidyl groups as stabilizers for organic materials |
| EP0792911A3 (en) * | 1996-02-27 | 1998-01-14 | Fmc Corporation | Flame resistant polyolefin compositions |
| JPH09292682A (en) * | 1996-04-23 | 1997-11-11 | Fuji Photo Film Co Ltd | Silver halide color photographic sensitive material |
| JP4010567B2 (en) * | 1997-02-03 | 2007-11-21 | 富士フイルム株式会社 | Silver halide color photographic light-sensitive material, phenidone compound used therefor, and method for producing the same |
| ITMI980366A1 (en) * | 1998-02-25 | 1999-08-25 | Ciba Spec Chem Spa | PREPARATION OF STERICALLY PREVENTED AMINE ETHERS |
-
1999
- 1999-02-06 SG SG1999000492A patent/SG74700A1/en unknown
- 1999-02-08 MY MYPI99000420A patent/MY123467A/en unknown
- 1999-02-17 GB GB9903463A patent/GB2334717B/en not_active Expired - Lifetime
- 1999-02-22 CZ CZ20080401A patent/CZ302752B6/en not_active IP Right Cessation
- 1999-02-23 CA CA2643170A patent/CA2643170C/en not_active Expired - Lifetime
- 1999-02-23 FR FR9902218A patent/FR2777004B1/en not_active Expired - Lifetime
- 1999-02-23 CA CA002262435A patent/CA2262435C/en not_active Expired - Lifetime
- 1999-02-23 AR ARP990100722A patent/AR015238A1/en active IP Right Grant
- 1999-02-24 ID IDP990142D patent/ID23225A/en unknown
- 1999-02-24 ES ES009900376A patent/ES2159462B1/en not_active Expired - Lifetime
- 1999-02-24 CN CNB991033833A patent/CN1202085C/en not_active Expired - Lifetime
- 1999-02-24 CN CNB2004100473618A patent/CN100384826C/en not_active Expired - Lifetime
- 1999-02-24 RU RU99103614/04A patent/RU2224758C2/en active
- 1999-02-24 DE DE19907945A patent/DE19907945B4/en not_active Expired - Lifetime
- 1999-02-24 KR KR1019990006156A patent/KR100561146B1/en not_active Expired - Lifetime
- 1999-02-24 DE DE19964603A patent/DE19964603B4/en not_active Expired - Lifetime
- 1999-02-25 JP JP04790499A patent/JP4798815B2/en not_active Expired - Lifetime
- 1999-02-25 NL NL1011394A patent/NL1011394C2/en not_active IP Right Cessation
- 1999-02-25 BE BE9900127A patent/BE1014990A5/en not_active IP Right Cessation
- 1999-02-25 BR BRPI9900807-6B1A patent/BR9900807B1/en active IP Right Grant
-
2010
- 2010-08-17 JP JP2010182352A patent/JP2011006443A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP4798815B2 (en) | 2011-10-19 |
| GB2334717B (en) | 2000-04-26 |
| KR19990072904A (en) | 1999-09-27 |
| AR015238A1 (en) | 2001-04-18 |
| DE19907945B4 (en) | 2013-06-06 |
| CA2262435C (en) | 2009-12-22 |
| GB2334717A (en) | 1999-09-01 |
| JPH11315067A (en) | 1999-11-16 |
| CN1235159A (en) | 1999-11-17 |
| ES2159462B1 (en) | 2002-05-01 |
| NL1011394A1 (en) | 1999-08-26 |
| ES2159462A1 (en) | 2001-10-01 |
| KR100561146B1 (en) | 2006-03-15 |
| CN1202085C (en) | 2005-05-18 |
| RU2224758C2 (en) | 2004-02-27 |
| BR9900807A (en) | 2000-03-28 |
| CA2262435A1 (en) | 1999-08-25 |
| CA2643170C (en) | 2013-04-16 |
| GB9903463D0 (en) | 1999-04-07 |
| NL1011394C2 (en) | 1999-10-26 |
| CN100384826C (en) | 2008-04-30 |
| CN1552758A (en) | 2004-12-08 |
| CZ302752B6 (en) | 2011-10-19 |
| ID23225A (en) | 2000-03-30 |
| DE19907945A1 (en) | 1999-08-26 |
| DE19964603B4 (en) | 2013-02-28 |
| CA2643170A1 (en) | 1999-08-25 |
| FR2777004A1 (en) | 1999-10-08 |
| JP2011006443A (en) | 2011-01-13 |
| FR2777004B1 (en) | 2005-12-30 |
| BR9900807B1 (en) | 2013-06-11 |
| BE1014990A5 (en) | 2004-08-03 |
| MY123467A (en) | 2006-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ZA991483B (en) | Preparation of sterically hindered amine ethers. | |
| GB9903463D0 (en) | Preparation of sterically hindered amine ethers | |
| EG22530A (en) | Preparation of substituted piperidin-4-ones | |
| HUP0202144A3 (en) | Method for the preparation of aryl ethers and their intermediates and the novel intermediates | |
| AU6123099A (en) | Process for the preparation of amine derivatives | |
| AU2001262226A1 (en) | Process for the preparation of sterically hindered aryloxyamines | |
| GB2345485B (en) | Sterically hindered amine compounds | |
| IL149534A0 (en) | Preparation of 3-substituted-4-arylquinolin-2-one derivatives | |
| HUP9902855A3 (en) | Preparation of sterol- and stanol-esters | |
| HUP9701207A3 (en) | Process for the preparation of n-methylated compounds by reductive methylation | |
| GB2377709B (en) | Sterically hindered amine compounds | |
| HUP0103672A3 (en) | Process for preparation of exochelins | |
| HU0004061D0 (en) | Process for the preparation of piperidinylaminomethyl-trifluoromethyl cyclic ether derivatives | |
| HUP0202824A3 (en) | Processes for the preparation of 2-arylvinyl alkyl ether and 1,4-diaryl-2-fluoro-2-butene compounds | |
| EG24104A (en) | Method of preparation of antidiphtheria | |
| HU9904575D0 (en) | Process for preparation of n-alkoxy-methyl-acidamides | |
| TW355988U (en) | Improved structure for inserting-hook of curtain | |
| GB9828185D0 (en) | Preparation of antibodies | |
| TW351055U (en) | Improvement of filter for acquarium | |
| TW375352U (en) | Telecommunication apparatus of easy type | |
| TW364391U (en) | Structure of filter funnel cork | |
| TW350249U (en) | Improvement of leg for cornerboard | |
| TW351458U (en) | Improvement of glasses frame | |
| TW354166U (en) | Improvement of glasses frame | |
| TW346798U (en) | Improved structure for hammock frame of hammock |