TWI342882B - Process for reducing caprolactam and its oligomers in nylon-6 pre-polymer - Google Patents
Process for reducing caprolactam and its oligomers in nylon-6 pre-polymer Download PDFInfo
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- TWI342882B TWI342882B TW093109085A TW93109085A TWI342882B TW I342882 B TWI342882 B TW I342882B TW 093109085 A TW093109085 A TW 093109085A TW 93109085 A TW93109085 A TW 93109085A TW I342882 B TWI342882 B TW I342882B
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- prepolymer
- water
- caprolactam
- nylon
- polymer
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/04—Preparatory processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
- C08G69/16—Preparatory processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
- C08G69/16—Preparatory processes
- C08G69/18—Anionic polymerisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyamides (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
1342882 九、發明說明: 【發明所屬之技術領域】 本發明係關於一種製備聚醯胺方法。更確切而言,本發 明係關於一種在製備尼龍-6聚合物期間自尼龍_6預聚物除 去低分子量雜質(特別為己内醯胺及己内醯胺之環系二聚 物)之方法。 【先前技術】 聚醯胺習知由二酸(如,己二酸)和二胺(如,己二胺)縮聚 或由内醯胺(如己内醯胺)聚合而製備。亦已知一些其 他方法’包括由ω-胺基腈與水反應製備聚醯胺。美國專利 第2,245,129號揭示在水存在下由加熱ω-胺基腈製備聚醯 胺。美國專利第6,069,228號指述一種由生成預聚物製造聚 醯胺聚合物之方法。 自ε-己内酿胺或ω -胺基腈製造的聚醒胺預聚物包含顯 著量己内醯胺及其寡聚物作為雜質。在本文中,“預聚物” 指用於製造尼龍-6之聚合物質。為製造用於商品應用的適 當品質之聚合物’必須降低預聚物中己内醯胺及其募聚物 之量。已報告揮發性雜質含量可由在亞大氣壓力及高溫蒸 發減少(參閱,W0第2001074925 Α1號,歐洲專利第989150 Α1 號)。 尼龍-6預聚物可由加熱己内醯胺和水而獲得。在利用此 方法時,尼龍-6預聚物一般包含約8重量。/。己内醖胺及約1 重量%己内醯胺二聚物。在市面上需要尼龍-6預聚物包含小 於1重量。/〇己内酿胺及小於0 · 1重量。/〇己内醯胺之環系二聚 92l93.doc 1342882 物0 減少尼龍6預聚物中己内醯胺及其寡聚物含量之工業實 行方法包括由水萃取。此技術有效減少己内醒胺及其募聚 物含量,但需要長逗留時間。一般工業水萃取步驟需要約 24小時且使用熱水(約100。〇。 出於成本原因,工業方法最佳減少水萃取步驟之逗留時 間及/或使用較低溫水。 本發明提供包括相對較短時間水萃取以取得所需尼龍6 預聚物純度之方法。 美國專利第6,525,167號揭示一種製造具有減少的可萃取 物含量之聚醯胺之方法。其中所述方法利用至少1 〇巴之第 一壓降及至少20巴之第二壓降。除其他外,所引用專利未 揭示如何由較小壓降且隨後水萃取在尼龍預聚物中獲得低 分子雜質。 【發明内容】 本發明揭示一種自包含己内醯胺、己内醯胺之寡聚物及 尼龍-6預聚物之預聚物混合物除去己内醯胺及其募聚物之 方法。該方法包括:(a)使熔融態預聚物混合物經過突然壓 降排放;(b)使自步驟(a)的經排放預聚物混合物與水接觸, 以產生預聚物相及水相,並經歷足夠時間’以使至少部分 己内醯胺和寡聚物萃取進入水相;及(c)自水相分離預聚物 相。 【實施方式】 本發明揭示一種製備尼龍-6預聚物之方法,其中需要相 92l93.doc 1342882 對車又短的水接觸時間萃取預聚物,且其中所獲得的預聚物 包含小於1重量%或更少己内醯胺及/或0.1重量%或更少己 内醒胺之環系二聚物。 在本發明之方法中,首先使尼龍_6預聚物溶融物保持在 約25 0磅/平方英寸(1724千帕)之壓力,然後使其經過突然至 少50磅/平方英寸(3 45千帕)之壓降。壓降可跨噴嘴完成。 或者’當製備預聚物之製程在大氣壓力時,則必須再加壓, 以取得50磅/平方英寸之壓降。如果系統已處於或高於5〇磅 /平方英寸表壓’則不需要再加壓。然後使預聚物熔融物排 放通入水。這可藉由使預聚物熔融物通過模孔排放完成。 一般模孔具有約0.25直徑。在與水接觸時,預聚物固化。 此步驟允許萃取低分子量物質,如己内醯胺和己内醯胺之 環系二聚物。較佳攪拌水和耐綸6預聚物之混合物。預聚物 與水的一般接觸時間為約5分至約60分。 在本發明之方法中’使排放的聚合物與水接觸一段時 間’但一般不超過約1小時。較佳使排放的聚合物與水接觸 約5分鐘時間。水溫為約10至約5(rC。水溫較佳為約15至約 25t » 在本發明的另一具體實施例中’使尼龍_6預聚物在與水 接觸之前固化。可藉由使聚合物冷卻完成預聚物固化。冷 卻可用空氣、氮氣或使預聚物固化的其他媒介物完成。然 後自水相分離包含尼龍-6預聚物之固相。以下非限制實例 說明本發明。 實例 92l93.doc 1342882 實例1 —壓降固化己内醢胺預聚物 使27.8克6.2 RV(相對黏度)的包含6.8重量%己内醯胺和 〇_7重量%環系二聚物之尼龍_6預聚物與2 2克水和〇 3克氮 一道填充到反應器。將混合物加熱到24(TC,混合,並用6〇〇 磅/平方英寸上流壓力迫使其通過0.0762釐米直徑孔。所得 尼龍-6粉末具有4.4之RV、9.8重量%之己内醯胺含量及〇8 重量%之環系二聚物含量。使該粉末與冷水(2(rc )在燒杯中 接觸15秒。將燒杯内谷物過渡,以自水分離粉末,這導致 粉末和水的約30秒之額外接觸時間。通過此方法,粉末之 己内酿胺含量減少到1.8重量%,而環系二聚物含量減少到 0.2重篁°/〇。壓降為600碎/平方英寸表壓。本實例說明,單 獨壓降不能顯著減少可萃取物。此方法需要隨後與水接 觸,以使可萃取雜質減少。 實例2 —壓降,再加壓,隨後與水接觸,以使己内醢胺預聚 物固4匕 將75重量%己内醯胺溶於水之溶液在高壓釜中加熱到 272 C ’且在250磅/平方英寸表壓保持2小時。在保持溫度 恒定同時’然後使壓力在1 5分鐘内降低到大氣壓力,隨後 用氮氣再加壓到5 0磅/平方英寸表壓,且保持3 〇分鐘。最 後’使產物以連續股形式通過0.635釐米直徑的2個孔快速 排放’將其收集在一大冷水鼓中。與水接觸5分鐘後,移除 並分析產物’其具有18之RV和分別為3.6及0.4重量%之己内 醯胺及環系二聚物含量。 實例3—胺基腈預聚物施加壓降,隨後舆水接觸 92l93.doc 1342882 將25碎6-胺基腈和丨〇磅水填充到高壓釜,並加熱到26<rc。 在此階段’以丨00立方釐来/分開始注入水,且加熱繼續到 275°C。卸壓設定到600磅/平方英寸表壓,且保持水注入3 小時。然後使壓力經90分鐘時間降低到50磅/平方英寸表 壓,同時溫度降到260。(:。在壓力降低後,產物以噴射形式 通過0.635釐米直徑的2個孔排入一大冷水鼓令。接觸2分鐘 後’移除並分析產物。聚合物RV為7 9,且其己内醯胺和環 系二聚物含量分別為2 〇重量0/〇及〇 6丨重量0/〇。 92l93.doc • 10.
Claims (1)
1342882
第093109085號專利申請案 中文申請專利範圍替換本(99年9月) 干*、申請專利範圍: 1. 一種自包合己内醯胺、己内醯胺之寡聚物及尼龍_6預聚物 之預聚物混合物除去己内醯胺及其募聚物之方法,該方 法包括: (a) 使炼融態預聚物混合物經過突然壓降排放; (b) 使自步驟(a)的經排放預聚物混合物與水接觸,以產 生預聚物相及水相,並經歷足夠時間,以使至少部分己 内酿胺和寡聚物經萃取進入水相,其中所用的水之溫度 係自10°c至5(TC ;及 (c) 自水相分離預聚物相。 2·根據請求項1之方法,其中使自步驟(a)之預聚物排放物在 步驟(b)中接觸水之前固化。 3.根據s青求項1或2之方法’其中該經固化聚合物混合物與 水接觸之時間不超過60分鐘。 4·根據請求項1之方法’其中該在步驟(a)之壓降為至少5〇 碎/平方英寸(psi)。 5.根據請求項1之方法,其中在步驟(a)之壓降排放係通過嘴 嘴完成》 92193-941l25.doc
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/424,696 US6875838B2 (en) | 2003-04-28 | 2003-04-28 | Process for reducing caprolactam and its oligomers in nylon-6 pre-polymer |
Publications (2)
Publication Number | Publication Date |
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TW200500392A TW200500392A (en) | 2005-01-01 |
TWI342882B true TWI342882B (en) | 2011-06-01 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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TW093109085A TWI342882B (en) | 2003-04-28 | 2004-04-01 | Process for reducing caprolactam and its oligomers in nylon-6 pre-polymer |
Country Status (13)
Country | Link |
---|---|
US (1) | US6875838B2 (zh) |
EP (1) | EP1618139B1 (zh) |
KR (1) | KR101033409B1 (zh) |
CN (1) | CN100348644C (zh) |
AT (1) | ATE336535T1 (zh) |
BR (1) | BRPI0410523A (zh) |
DE (1) | DE602004001991T2 (zh) |
ES (1) | ES2271908T3 (zh) |
HK (1) | HK1093076A1 (zh) |
MX (1) | MXPA05011425A (zh) |
MY (1) | MY140148A (zh) |
TW (1) | TWI342882B (zh) |
WO (1) | WO2004096890A1 (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005033379A1 (de) † | 2005-07-16 | 2007-01-18 | Degussa Ag | Verwendung von cyclischen Oligomeren in einem formgebenden Verfahren und Formkörper, hergestellt nach diesem Verfahren |
KR20090093932A (ko) * | 2006-12-18 | 2009-09-02 | 유니띠까 가부시키가이샤 | 2축 연신 폴리아미드 수지 필름 및 그 제조방법 |
US20100227973A1 (en) * | 2009-03-06 | 2010-09-09 | Honeywell International Inc. | Low viscosity polyamides |
WO2015060827A1 (en) | 2013-10-22 | 2015-04-30 | Empire Technology Development Llc | Methods and compounds for producing nylon 6,6 |
US9982094B2 (en) | 2013-10-22 | 2018-05-29 | Empire Technology Development Llc | Compounds and methods for producing nylon 6 |
WO2015060862A1 (en) | 2013-10-25 | 2015-04-30 | Empire Technology Development Llc | Methods of producing dicarbonyl compounds |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2245129A (en) * | 1935-01-02 | 1941-06-10 | Du Pont | Process for preparing linear polyamides |
US5543495A (en) * | 1994-03-08 | 1996-08-06 | E. I. Du Pont De Nemours And Company | Process for increasing the molecular weight of polyamides and other condensation polymers |
DE19808490A1 (de) * | 1998-02-27 | 1999-09-02 | Basf Ag | Verfahren zur Herstellung von Polyamiden aus Aminocarbonsäureverbindungen |
DE19808407A1 (de) * | 1998-02-27 | 1999-09-09 | Basf Ag | Herstellung von Polyamiden durch Reaktivdestillation |
US6069228A (en) * | 1998-08-17 | 2000-05-30 | E. I. Du Pont De Nemours And Company | Process for preparing polyamides |
DE19844176C1 (de) * | 1998-09-25 | 2000-03-16 | Ems Polyloy Gmbh | Verfahren und Vorrichtung zur Vakuum-Entmonomerisierung von Polyamid 6-Schmelzen |
ID28447A (id) * | 1998-10-26 | 2001-05-24 | Du Pont | Proses polimerisasi kontinu pembuatan poliamida-poliamida dari omega-aminonitril |
DE19905754A1 (de) * | 1999-02-11 | 2000-08-17 | Basf Ag | Verfahren zur Herstellung von Polyamid 6 mit geringem Extraktgehalt, hoher Viskositätsstabilität und kleiner Remonomerisierungsrate |
DE10015862A1 (de) | 2000-03-30 | 2001-10-11 | Bayer Ag | Polyamidzusammensetzung und Verfahren zu ihrer Herstellung |
US6437089B1 (en) * | 2001-06-01 | 2002-08-20 | E. I. Du Pont De Nemours And Company | Process for the production of nylon 6 |
-
2003
- 2003-04-28 US US10/424,696 patent/US6875838B2/en not_active Expired - Fee Related
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2004
- 2004-04-01 TW TW093109085A patent/TWI342882B/zh not_active IP Right Cessation
- 2004-04-16 DE DE602004001991T patent/DE602004001991T2/de not_active Expired - Lifetime
- 2004-04-16 CN CNB2004800111742A patent/CN100348644C/zh not_active Expired - Fee Related
- 2004-04-16 ES ES04760269T patent/ES2271908T3/es not_active Expired - Lifetime
- 2004-04-16 AT AT04760269T patent/ATE336535T1/de not_active IP Right Cessation
- 2004-04-16 KR KR1020057020413A patent/KR101033409B1/ko not_active IP Right Cessation
- 2004-04-16 EP EP04760269A patent/EP1618139B1/en not_active Expired - Lifetime
- 2004-04-16 BR BRPI0410523-0A patent/BRPI0410523A/pt not_active IP Right Cessation
- 2004-04-16 WO PCT/US2004/011733 patent/WO2004096890A1/en active IP Right Grant
- 2004-04-16 MX MXPA05011425A patent/MXPA05011425A/es active IP Right Grant
- 2004-04-27 MY MYPI20041536A patent/MY140148A/en unknown
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2006
- 2006-12-14 HK HK06113806A patent/HK1093076A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1788036A (zh) | 2006-06-14 |
TW200500392A (en) | 2005-01-01 |
US20040214982A1 (en) | 2004-10-28 |
DE602004001991T2 (de) | 2007-04-05 |
EP1618139B1 (en) | 2006-08-16 |
WO2004096890A1 (en) | 2004-11-11 |
KR101033409B1 (ko) | 2011-05-09 |
MY140148A (en) | 2009-11-30 |
KR20060019519A (ko) | 2006-03-03 |
MXPA05011425A (es) | 2006-05-31 |
BRPI0410523A (pt) | 2006-06-20 |
EP1618139A1 (en) | 2006-01-25 |
ATE336535T1 (de) | 2006-09-15 |
CN100348644C (zh) | 2007-11-14 |
ES2271908T3 (es) | 2007-04-16 |
US6875838B2 (en) | 2005-04-05 |
DE602004001991D1 (de) | 2006-09-28 |
HK1093076A1 (en) | 2007-02-23 |
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