GB896606A - Process for the production of stabilized linear polyamides - Google Patents
Process for the production of stabilized linear polyamidesInfo
- Publication number
- GB896606A GB896606A GB989759A GB989759A GB896606A GB 896606 A GB896606 A GB 896606A GB 989759 A GB989759 A GB 989759A GB 989759 A GB989759 A GB 989759A GB 896606 A GB896606 A GB 896606A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyamides
- acid
- benzylamine
- caprolactam
- carbon atoms
- 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
- C08G69/48—Polymers modified by chemical after-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyamides (AREA)
Abstract
In a process for the production of stabilized linear polyamides, a solid product obtained by condensation of aminoacids, which product contains terminal amino and carboxyl groups, is subjected in a comminuted form or in a form having a large surface area with respect to mass at a temperature between 80 DEG C. and 100 DEG C., to a treatment with aqueous solutions of one or more reagents capable of blocking the active terminal groups, selected from the group comprising monocarboxylic acids having not more than seven carbon atoms, polycarboxylic acids having not more than six carbon atoms and organic bases after which the treated product is dried. Low molecular weight products may be removed from the polyamides prior to treatment by the process of the invention by leaching with hot water. In an embodiment of the process of the invention, the leaching out and stabilizing may be effected simultaneously. Specified polyamides are those derived from aminocaproic acid, E-caprolactam and aminoundecylic acid. Specified aftertreating reagents are acetic, formic, propionic, benzoic, adipic, tartaric and citric acids, propylamine, benzylamine and triethanolamine. In the examples poly-E-caprolactam in the form of chips with:- (1), (3) and (4) benzoic acid, (2) acetic acid and (5) benzylamine.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT480758 | 1958-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB896606A true GB896606A (en) | 1962-05-16 |
Family
ID=11114028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB989759A Expired GB896606A (en) | 1958-03-31 | 1959-03-23 | Process for the production of stabilized linear polyamides |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1420237B2 (en) |
| ES (1) | ES252726A1 (en) |
| GB (1) | GB896606A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3462396A (en) * | 1966-01-24 | 1969-08-19 | Allied Chem | Stabilization of solid polycaprolactam |
| US4315045A (en) | 1978-12-19 | 1982-02-09 | Crown City Plating Co. | Conditioning of polyamides for electroless plating |
| US4335164A (en) | 1978-12-19 | 1982-06-15 | Crown City Plating Co. | Conditioning of polyamides for electroless plating |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2743515A1 (en) * | 1977-09-28 | 1979-04-05 | Bayer Ag | POLYAMIDE MADE FROM ISOPHTHALIC ACID AND HEXAMETHYLENEDIAMINE |
| CN112094406A (en) * | 2020-08-31 | 2020-12-18 | 聊城鲁西聚酰胺新材料科技有限公司 | Nylon 6 production process and system and product thereof |
-
1959
- 1959-03-18 DE DE19591420237 patent/DE1420237B2/en active Pending
- 1959-03-23 GB GB989759A patent/GB896606A/en not_active Expired
- 1959-10-07 ES ES0252726A patent/ES252726A1/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3462396A (en) * | 1966-01-24 | 1969-08-19 | Allied Chem | Stabilization of solid polycaprolactam |
| US4315045A (en) | 1978-12-19 | 1982-02-09 | Crown City Plating Co. | Conditioning of polyamides for electroless plating |
| US4335164A (en) | 1978-12-19 | 1982-06-15 | Crown City Plating Co. | Conditioning of polyamides for electroless plating |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1420237B2 (en) | 1970-02-05 |
| DE1420237A1 (en) | 1968-10-03 |
| ES252726A1 (en) | 1960-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR910002925A (en) | Process for preparing novolak resin with low metal ion content | |
| GB836742A (en) | An improved method for producing polyesters in a dry form | |
| GB942025A (en) | Improvements in and relating to polyamides | |
| ATE33845T1 (en) | PROCESS FOR THE PREPARATION OF POLYIMIDE AND POLYISOINDOLOCHINAZOLINDIONE PRECURSORS. | |
| GB896606A (en) | Process for the production of stabilized linear polyamides | |
| GB1208524A (en) | Process for the production of polycaproamide | |
| DE2963396D1 (en) | Aqueous dispersions of oligomeric or polymeric plastics, a process for preparing same and their use | |
| GB942691A (en) | A process for the purification of polymerised amino carboxylic acids by washing, and the polyamides thus purified | |
| GB1399398A (en) | Process for the manufacture of saturated aliphatic monocarbo xylic acids | |
| GB1132021A (en) | Process for the purification of crude gonadotropin preparations | |
| GB891268A (en) | Process for the production of water-insoluble nitrogenous polymers | |
| GB1198782A (en) | A Process for the Production of Azo-Diisobutyric Acid Amidine | |
| JPS6468816A (en) | Method for controlling dimensions of hygroscopic resin parts | |
| GB950165A (en) | A method of producing nordstrandite | |
| GB1122921A (en) | Process for improving the wet fastness properties of dyed textile products | |
| GB1347933A (en) | Treatment of protein solutions | |
| GB1072933A (en) | Process for preparing an active oxygen-containing aluminium oxide | |
| GB929034A (en) | Process for the manufacture of monomeric chloroacetaldehyde | |
| GB820994A (en) | Improvements in or relating to the preparation of polyamide moulding materials | |
| GB692440A (en) | Improvements in or relating to the manufacture of pyro-mellitic acid | |
| GB932677A (en) | Method for the simultaneous stabilisation and drying of wood | |
| GB1197672A (en) | Process for Preparing Fatty Acyl Derivatives of Amino Acids. | |
| GB597590A (en) | Improvements in or relating to the manufacture of resinous condensation products | |
| GB969132A (en) | Process for producing optically active or inactive ª†-methyl glutamate hydrochloride | |
| DE3170699D1 (en) | Method for the preparation of transplants with higher biological stability |