GB801733A - Improvements in the production of polyamides - Google Patents
Improvements in the production of polyamidesInfo
- Publication number
- GB801733A GB801733A GB37131/56A GB3713156A GB801733A GB 801733 A GB801733 A GB 801733A GB 37131/56 A GB37131/56 A GB 37131/56A GB 3713156 A GB3713156 A GB 3713156A GB 801733 A GB801733 A GB 801733A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hexamethylene diamine
- current
- nitrogen
- acid
- salt
- 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.)
- Expired
Links
Classifications
-
- 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
- C08G69/28—Preparatory processes
- C08G69/30—Solid state polycondensation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyamides (AREA)
Abstract
A polyamide is made by condensing a diamine and a dicarboxylic acid, or a salt thereof, in the solid phase, at a temperature below the melting point of the initial materials, the intermediate condensation products and the end products respectively. The reaction may be carried out in the presence of an oxygen-free gas, e.g. nitrogen, carbon dioxide, sulphur dioxide or hydrogen chloride. In the examples: (1) the dry salt of adipic acid and hexamethylene diamine is heated at 190 DEG C. in a current of dry carbon dioxide; (2) the dry salt of sebacic acid and hexamethylene diamine is heated at 165 DEG C. and then at 180 DEG C. in a current of nitrogen containing hexamethylene diamine; (3) the dry salt of terephthalic acid and hexamethylene diamine is condensed at 260 DEG C. in a current of nitrogen; (4) a mixture of the salts of adipic acid and terephthalic acid with hexamethylene diamine is condensed at 190 DEG C. in a current of nitrogen.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE801733X | 1955-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB801733A true GB801733A (en) | 1958-09-17 |
Family
ID=6716702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37131/56A Expired GB801733A (en) | 1955-12-24 | 1956-12-05 | Improvements in the production of polyamides |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1168248A (en) |
GB (1) | GB801733A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3232909A (en) * | 1960-10-20 | 1966-02-01 | Celanese Corp | Solid state polymerization of polyamideforming reactants under autogenous pressure |
US3388099A (en) * | 1965-05-14 | 1968-06-11 | Monsanto Co | Terpolyamides |
US5403910A (en) * | 1993-03-25 | 1995-04-04 | E. I. Du Pont De Nemours & Company | Low temperature nylon polymerization process |
US5727876A (en) * | 1996-05-31 | 1998-03-17 | E. I. Du Pont De Nemours And Company | Polymer mixing apparatus |
WO2014202506A1 (en) * | 2013-06-19 | 2014-12-24 | Dsm Ip Assets B.V. | Process for producing a semi-aromatic semi-crystalline polyamide |
WO2015197124A1 (en) * | 2014-06-26 | 2015-12-30 | Dsm Ip Assets B.V. | Process for the preparation of a semi-crystalline semi-aromatic polyamide |
WO2016062579A3 (en) * | 2014-07-29 | 2016-06-23 | Dsm Ip Assets B.V. | Process for preparing a polyamide, a nylon salt to be used therein and a process for making the salt |
-
1956
- 1956-12-05 GB GB37131/56A patent/GB801733A/en not_active Expired
- 1956-12-21 FR FR1168248D patent/FR1168248A/en not_active Expired
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3232909A (en) * | 1960-10-20 | 1966-02-01 | Celanese Corp | Solid state polymerization of polyamideforming reactants under autogenous pressure |
US3388099A (en) * | 1965-05-14 | 1968-06-11 | Monsanto Co | Terpolyamides |
US5403910A (en) * | 1993-03-25 | 1995-04-04 | E. I. Du Pont De Nemours & Company | Low temperature nylon polymerization process |
US5727876A (en) * | 1996-05-31 | 1998-03-17 | E. I. Du Pont De Nemours And Company | Polymer mixing apparatus |
JP2016522297A (en) * | 2013-06-19 | 2016-07-28 | ディーエスエム アイピー アセッツ ビー.ブイ. | Process for producing semi-aromatic semi-crystalline polyamide |
EA030802B1 (en) * | 2013-06-19 | 2018-09-28 | ДСМ АйПи АССЕТС Б.В. | Process for producing a semi-aromatic semi-crystalline polyamide |
CN105339415A (en) * | 2013-06-19 | 2016-02-17 | 帝斯曼知识产权资产管理有限公司 | Process for producing a semi-aromatic semi-crystalline polyamide |
CN105339415B (en) * | 2013-06-19 | 2019-01-01 | 帝斯曼知识产权资产管理有限公司 | The method for producing semi-aromatic semi-crystalline polyamide |
WO2014202506A1 (en) * | 2013-06-19 | 2014-12-24 | Dsm Ip Assets B.V. | Process for producing a semi-aromatic semi-crystalline polyamide |
US9556310B2 (en) | 2013-06-19 | 2017-01-31 | Dsm Ip Assets B.V. | Process for producing a semi-aromatic semi-crystalline polyamide |
WO2015197124A1 (en) * | 2014-06-26 | 2015-12-30 | Dsm Ip Assets B.V. | Process for the preparation of a semi-crystalline semi-aromatic polyamide |
US10577500B2 (en) | 2014-06-26 | 2020-03-03 | Dsm Ip Assets B.V. | Process for the preparation of a semi-crystalline semi-aromatic polyamide |
CN106574047A (en) * | 2014-07-29 | 2017-04-19 | 帝斯曼知识产权资产管理有限公司 | Process for preparing a polyamide, a nylon salt to be used therein and a process for making the salt |
WO2016062579A3 (en) * | 2014-07-29 | 2016-06-23 | Dsm Ip Assets B.V. | Process for preparing a polyamide, a nylon salt to be used therein and a process for making the salt |
RU2684928C2 (en) * | 2014-07-29 | 2019-04-16 | ДСМ АйПи АССЕТС Б.В. | Process for preparing a polyamide, a nylon salt to be used therein and a process for making the salt |
US10584206B2 (en) | 2014-07-29 | 2020-03-10 | Dsm Ip Assets B.V. | Process for preparing a polyamide, a nylon salt to be used therein and a process for making the salt |
US11299589B2 (en) | 2014-07-29 | 2022-04-12 | Dsm Ip Assets B.V. | Process for preparing a polyamide, a nylon salt to be used therein and a process for making the salt |
US11851528B2 (en) | 2014-07-29 | 2023-12-26 | Dsm Ip Assets B.V. | Process for preparing a polyamide, a nylon salt to be used therein and a process for making the salt |
Also Published As
Publication number | Publication date |
---|---|
FR1168248A (en) | 1958-12-05 |
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