GB830442A - Improvements in or relating to the production of shaped articles, particularly filaments, of synthetic polymers by melt extrusion processes - Google Patents
Improvements in or relating to the production of shaped articles, particularly filaments, of synthetic polymers by melt extrusion processesInfo
- Publication number
- GB830442A GB830442A GB20294/56A GB2029456A GB830442A GB 830442 A GB830442 A GB 830442A GB 20294/56 A GB20294/56 A GB 20294/56A GB 2029456 A GB2029456 A GB 2029456A GB 830442 A GB830442 A GB 830442A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polymer
- end groups
- amine end
- amine
- polymers
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Multicomponent Fibers (AREA)
Abstract
Shaped articles, particularly filamentary materials, comprise a core of a synthetic polymer containing amine end groups and a surrounding contiguous sheath of a synthetic polymer essentially free from amine end groups, at least one of the polymers having fibreforming characteristics. A polymer "containing amine end groups" is defined as a polymer in which the proportion of amine end groups is 50 or more equivalents per 106 g. of polymer, and a polymer "essentially free from amine end groups" is defined as a polymer containing fewer than 50 amine end group equivalents per 106 g. of polymer. The articles may be made by simultaneously extruding through the same orifice the molten polymer containing amine end groups as a core and the molten polymer essentially free from amine end groups as a surrounding sheath. The preferred polymers are the polyamides, particularly polyhexamethylene adipamide. Polyureas derived from a diisocyanate and a diamine, polythioureas, polythioamides, polysulphonamides, polyimides, poly-4-amino-1,2,4-triazoles and copolyesteramides may also be used. The core-forming and/or the sheath forming polymer may be a blend of two or more polymers. Thus the amine content of the core polymer may arise from a blend of a polymer containing amine groups and another polymer with few or no amine groups as, for example, a blend of a polyamide and a polyester, such as polyethylene terephthalate. While polymers containing primary amine end groups are preferred, polymers containing secondary and tertiary amine end groups may also be used. Thus an N-amino-alkyl morpholine can be used as a viscosity stabilizer in the preparation of polyamides in order to obtain polymers with tertiary amine end groups. In order to obtain a product which can be dyed with acid dyes, the overall amine concentration in the two-component filament should be 80-400, preferably 100-200, equivalents of amine end groups per 106 grams of polymer. In an example, a polyhexamethylene adipamide containing 26 and 135 equivalents of carboxyl and amine end groups, respectively, per 106 grams of polymer is spun as the core of a two-component fibre simultaneously with a polyhexamethylene adipamide having 43 and 74 equivalents of amine and carboxyl end groups, respectively, per 106 grams of polymer as the sheath component, using the apparatus described in Specification 830,441. The pump speeds for the two components are adjusted to give a sheath-core weight ratio of 30/70 and the polymers are spun at 285 DEG C. Two component synthetic fibres made according to the invention can be dyed deep fast colours with acid dyes. Specifications 639,893, 687,036 and U.S.A. Specification 2,130,948 also are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US830442XA | 1955-06-30 | 1955-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB830442A true GB830442A (en) | 1960-03-16 |
Family
ID=22175812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20294/56A Expired GB830442A (en) | 1955-06-30 | 1956-06-29 | Improvements in or relating to the production of shaped articles, particularly filaments, of synthetic polymers by melt extrusion processes |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1111772B (en) |
GB (1) | GB830442A (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2137235A (en) * | 1937-02-15 | 1938-11-22 | Du Pont | Shaped articles from polymeric materials |
NL51307C (en) * | 1937-05-11 | |||
NL59058C (en) * | 1941-08-06 | |||
FR940863A (en) * | 1943-02-25 | 1948-12-27 | Lavorazione Mat Plast | Threads, ribbons, etc. with core of thread or cord of synthetic material based on polyamide (nylon) and coating based on vinyl chloride (vipla), bana, natural rubber, cellulose acetate, etc. |
-
1956
- 1956-06-29 DE DEP16542A patent/DE1111772B/en active Pending
- 1956-06-29 GB GB20294/56A patent/GB830442A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1111772B (en) | 1961-07-27 |
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