GB1283763A - A PROCESS FOR DRY SPINNING POLY-gamma-METHYL GLUTAMATE FILAMENTS - Google Patents
A PROCESS FOR DRY SPINNING POLY-gamma-METHYL GLUTAMATE FILAMENTSInfo
- Publication number
- GB1283763A GB1283763A GB4107969A GB4107969A GB1283763A GB 1283763 A GB1283763 A GB 1283763A GB 4107969 A GB4107969 A GB 4107969A GB 4107969 A GB4107969 A GB 4107969A GB 1283763 A GB1283763 A GB 1283763A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- polymer
- filaments
- chlorinated aliphatic
- poly
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/68—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyaminoacids or polypeptides
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
1283763 Poly-γ-methyl glutamate filaments AJINOMOTO CO Inc and NISSIN SPINNING CO Ltd 18 Aug 1969 [23 Aug 1968] 41079/69 Heading B5B [Also in Division C3] Poly-γ-methyl glutamate filaments are produced by extruding into a heated atmosphere a solution of the polymer in a solvent consisting of a mixture of a chlorinated aliphatic hydrocarbon which is a good solvent for the polymer and another chlorinated aliphatic hydrocarbon which is a non-solvent for the polymer and which has a boiling point higher than the good solvent. The good solvent, which should have a boiling point lower than the melting point or decomposition point of the filaments formed, may be methylene dichloride, chloroform, 1,2- dichloroethane 1,1,2-trichloroethane or tetrachloroethane and the non-solvent for the polymer may be 1,1-dichloroethane, 1,2-dichloroethylene, carbon tetrachloride, 1,1,1-trichloroethane, 1,2-dichloropropane, 1,3-dichloropropane or tetrachloroethylene. Trichloroethylene may also be used as a non-solvent, if a slightly higher proportion is used, relative to the good solvent, than with other non-solvents. The weight ratio of the non-solvent to the good solvent may be from 1 : 9 to 1 : 1. The coagulating ability of various non solvent chlorinated aliphatic hydrocarbons with respect to a solution of the polymer in a chlorinated aliphatic hydrocarbon which is a good solvent for the polymer is determined by measuring the number of C.C.S. of the non-solvent which when added dropwise with stirring to a solution consisting of 7À2 grams of poly-γ-methyl glutamate having a degree of polymerization of 2,500 and 28À2 CCS. of 1,2-dichloroethane at 20‹ C. causes the polymer solution to develop a white turbidity and gelation. In the experiments turbidity occurred when 13 to 85 CCS. of the non-solvent chlorinated aliphatic hydrocarbons were mixed with the polymer solution. Hence a non-solvent is defined as one having a coagulating ability in this test of less than or equal to 85 mls; the coagulating ability of a good solvent is very low and may be regarded as effectively infinite. In further experiments solutions of poly-γ- methyl glutamate in various mixtures of the solvent and non-solvent chlorinated aliphatic hydrocarbons were heated to 50‹ C. and extruded through a spinneret into a spinning cell containing air heated to 90‹C. The filaments thereby formed could be stretched at stretch ratios up to 2À25.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5981468 | 1968-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1283763A true GB1283763A (en) | 1972-08-02 |
Family
ID=13124062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4107969A Expired GB1283763A (en) | 1968-08-23 | 1969-08-18 | A PROCESS FOR DRY SPINNING POLY-gamma-METHYL GLUTAMATE FILAMENTS |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1942585A1 (en) |
| FR (1) | FR2016273A1 (en) |
| GB (1) | GB1283763A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0674522B2 (en) * | 1985-11-08 | 1994-09-21 | 味の素株式会社 | Artificial hair |
-
1969
- 1969-08-18 GB GB4107969A patent/GB1283763A/en not_active Expired
- 1969-08-21 FR FR6928770A patent/FR2016273A1/fr not_active Withdrawn
- 1969-08-21 DE DE19691942585 patent/DE1942585A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2016273A1 (en) | 1970-05-08 |
| DE1942585A1 (en) | 1970-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |