BR112023023281A2 - Ésteres insaturados contendo um aditivo para reduzir e estabilizar o índice de amarelamento - Google Patents
Ésteres insaturados contendo um aditivo para reduzir e estabilizar o índice de amarelamentoInfo
- Publication number
- BR112023023281A2 BR112023023281A2 BR112023023281A BR112023023281A BR112023023281A2 BR 112023023281 A2 BR112023023281 A2 BR 112023023281A2 BR 112023023281 A BR112023023281 A BR 112023023281A BR 112023023281 A BR112023023281 A BR 112023023281A BR 112023023281 A2 BR112023023281 A2 BR 112023023281A2
- Authority
- BR
- Brazil
- Prior art keywords
- yellowing index
- stabilize
- additive
- reduce
- acrylates
- Prior art date
Links
- 238000004383 yellowing Methods 0.000 title abstract 3
- 239000000654 additive Substances 0.000 title abstract 2
- 230000000996 additive effect Effects 0.000 title abstract 2
- 150000002148 esters Chemical class 0.000 title abstract 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 abstract 3
- 125000000217 alkyl group Chemical group 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 2
- 150000001299 aldehydes Chemical class 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/62—Use of additives, e.g. for stabilisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/52—Esters of acyclic unsaturated carboxylic acids having the esterified carboxyl group bound to an acyclic carbon atom
- C07C69/533—Monocarboxylic acid esters having only one carbon-to-carbon double bond
- C07C69/54—Acrylic acid esters; Methacrylic acid esters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
ésteres insaturados contendo um aditivo para reduzir e estabilizar o índice de amarelamento. a presente invenção refere-se a um novo método para reduzir o índice de amarelamento de (met)acrilatos de alquila, especialmente de mma, e também de polímeros que foram produzidos a partir destes (met)acrilatos de alquila. o novo método apresenta este efeito mesmo após um período relativamente longo de armazenamento dos monômeros. o método envolve adicionar aldeídos específicos à composição monomérica. isto pode ser feito independentemente do respectivo processo de preparação dos (met)acrilatos de alquila e é, portanto, simples e barato de implementar. as composições monoméricas correspondentes fazem ainda parte da presente invenção.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21172931 | 2021-05-10 | ||
| PCT/EP2022/061442 WO2022238144A1 (de) | 2021-05-10 | 2022-04-29 | Ungesättigte ester, enthaltend ein additiv zur reduktion und stabilisierung des gelbwertes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR112023023281A2 true BR112023023281A2 (pt) | 2024-01-23 |
Family
ID=76180846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR112023023281A BR112023023281A2 (pt) | 2021-05-10 | 2022-04-29 | Ésteres insaturados contendo um aditivo para reduzir e estabilizar o índice de amarelamento |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP4337633A1 (pt) |
| JP (1) | JP2024518080A (pt) |
| KR (1) | KR20240006654A (pt) |
| CN (1) | CN117279885A (pt) |
| BR (1) | BR112023023281A2 (pt) |
| TW (1) | TW202311223A (pt) |
| WO (1) | WO2022238144A1 (pt) |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2848499A (en) | 1956-05-09 | 1958-08-19 | Celanese Corp | Preparation of unsaturated aldehydes |
| DE3106557A1 (de) | 1981-02-21 | 1982-09-16 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von (alpha)-alkylacroleinen |
| JPS606635A (ja) * | 1983-06-24 | 1985-01-14 | Mitsubishi Petrochem Co Ltd | １，２−不飽和カルボン酸および／またはそのエステルの精製法 |
| DE3740293A1 (de) | 1987-11-27 | 1989-06-01 | Hoechst Ag | Verfahren zur herstellung von alpha-alkylacroleinen |
| JP3069420B2 (ja) | 1991-11-05 | 2000-07-24 | ダイセル化学工業株式会社 | 反応器および反応方法 |
| US5468899A (en) * | 1995-01-11 | 1995-11-21 | Bauer, Jr.; William | Process for purifying α,β-unsaturated esters |
| SG71815A1 (en) | 1997-07-08 | 2000-04-18 | Asahi Chemical Ind | Method of producing methyl methacrylate |
| DE10144490A1 (de) * | 2001-09-10 | 2003-03-27 | Basf Ag | Verfahren zur Herstellung von (Meth)acrylsäureestern |
| US7012039B2 (en) | 2001-12-21 | 2006-03-14 | Asahi Kasei Chemicals Corporation | Oxide catalyst composition |
| JP4173757B2 (ja) | 2003-03-26 | 2008-10-29 | ジヤトコ株式会社 | ロックアップクラッチの寿命判定方法及びスリップロックアップ領域設定方法並びに寿命判定装置 |
| US7141702B2 (en) | 2004-03-26 | 2006-11-28 | Council Of Scientific And Industrial Research | Process for the synthesis of α-substituted acroleins |
| KR20110101209A (ko) * | 2008-12-18 | 2011-09-15 | 루사이트 인터내셔널 유케이 리미티드 | 메틸 메타크릴레이트의 정제 방법 |
| ES2673104T3 (es) | 2013-04-19 | 2018-06-19 | Evonik Röhm Gmbh | Procedimiento para la preparación de metacrilato de metilo |
| TWI715627B (zh) | 2015-09-16 | 2021-01-11 | 德商羅伊姆公司 | 含鈉鹽之mma-甲醇混合物的萃取後處理 |
| EP3450422A1 (de) | 2017-08-29 | 2019-03-06 | Evonik Röhm GmbH | Verfahren zur herstellung optischer formmassen |
-
2022
- 2022-04-29 CN CN202280033961.5A patent/CN117279885A/zh active Pending
- 2022-04-29 JP JP2023569760A patent/JP2024518080A/ja active Pending
- 2022-04-29 KR KR1020237042646A patent/KR20240006654A/ko unknown
- 2022-04-29 BR BR112023023281A patent/BR112023023281A2/pt unknown
- 2022-04-29 WO PCT/EP2022/061442 patent/WO2022238144A1/de active Application Filing
- 2022-04-29 EP EP22727014.7A patent/EP4337633A1/de active Pending
- 2022-05-05 TW TW111116947A patent/TW202311223A/zh unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022238144A1 (de) | 2022-11-17 |
| TW202311223A (zh) | 2023-03-16 |
| KR20240006654A (ko) | 2024-01-15 |
| CN117279885A (zh) | 2023-12-22 |
| JP2024518080A (ja) | 2024-04-24 |
| EP4337633A1 (de) | 2024-03-20 |
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