GB835844A - Process for the purification of polyamides - Google Patents
Process for the purification of polyamidesInfo
- Publication number
- GB835844A GB835844A GB8154/58A GB815458A GB835844A GB 835844 A GB835844 A GB 835844A GB 8154/58 A GB8154/58 A GB 8154/58A GB 815458 A GB815458 A GB 815458A GB 835844 A GB835844 A GB 835844A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyamides
- hydrazine
- boiling aqueous
- hydrazine hydrate
- purification
- 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
- C08G69/46—Post-polymerisation treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyamides (AREA)
Abstract
The content of monomeric and low molecular weight compounds in polyamides made from co-amino carboxylic acids or polyamide forming derivatives thereof is reduced by granulating the polyamides and contacting said granules with boiling aqueous solutions of hydrazine containing 10 to 100 mg. of hydrazine or hydrazine hydrate per litre. The example describes the treatment of polycaprolactam chips with a boiling aqueous solution of hydrazine hydrate.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1188817X | 1957-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB835844A true GB835844A (en) | 1960-05-25 |
Family
ID=30117217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8154/58A Expired GB835844A (en) | 1957-03-20 | 1958-03-13 | Process for the purification of polyamides |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB835844A (en) |
NL (1) | NL107679C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3395057A (en) * | 1964-12-08 | 1968-07-30 | G T Schjeladhl Company | Method for etching polyiminde plastic film |
-
0
- NL NL107679D patent/NL107679C/xx active
-
1958
- 1958-03-13 GB GB8154/58A patent/GB835844A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3395057A (en) * | 1964-12-08 | 1968-07-30 | G T Schjeladhl Company | Method for etching polyiminde plastic film |
Also Published As
Publication number | Publication date |
---|---|
NL107679C (en) |
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