GB1193249A - A process for improving the Dyeability of Polyester Filaments - Google Patents
A process for improving the Dyeability of Polyester FilamentsInfo
- Publication number
- GB1193249A GB1193249A GB295469A GB295469A GB1193249A GB 1193249 A GB1193249 A GB 1193249A GB 295469 A GB295469 A GB 295469A GB 295469 A GB295469 A GB 295469A GB 1193249 A GB1193249 A GB 1193249A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- temperature
- polyethylene terephthalate
- isophthalate
- dyeability
- 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
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
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
1,193,249. Improving the dyeability of polyester fibres. E. I. DU PONT DE NEMOURS & CO. 17 Jan., 1969 [17 Jan., 1968], No. 2954/69. Heading B5B. The dyeability of polyester filaments is improved by sequentially: (a) drawing the amorphous filaments at a temperature below their " apparent minimum crystallization temperature "; (b) effecting limited crystallization of the filaments to increase their tenacity by heating them to a temperature above their apparent minimum crystallization temperature while allowing the filaments to relax no more than 45% of their drawn length; and (c) further crystallizing the filaments to dimensionally stabilize them with an annealing treatment by heating them under tension at a temperature higher than the temperature during relaxation and lower than the softening temperature of the filaments, with the proviso that during the further crystallization, if the filaments are stretched the extent of elongation does not exceed the extent that the filaments were allowed to relax in step (b). As an alternative to step (c) of Claim 1 the filaments may be further crystallized by exposing them to the vapour of a boiling chlorinated hydrocarbon which is a swelling agent for the filaments at the temperature of treatment. The amorphous filaments may be drawn at a temperature within the range 50‹ to 80‹ C., relaxed at a temperature within the range of 100‹ to 180‹ C. while allowing a relaxation of 5 to 45% of their drawn length, and annealed at a temperature of at least 185‹ C. The filaments may be held at constant length and at a temperature within the range of 200‹ to 230‹ C. during the annealing step (c). The polyester filaments may consist of polyethylene terephthalate, poly (p-hexahydroxylylene terephthalate), poly (diphenylolpropane isophthalate), a polyethylene naphthalene dicarboxylate, polyethylene terephthalate/hexahydroterephthalate of which at least 85 mole per cent is polyethylene terephthalate, polyethylene terephthalate/5 - (sodium sulpho) - isophthalate of which at least 95 mole per cent is polyethylene terephthalate, and polyethylene terephthalate/ isophthalate of which at least 85 mole per cent is polyethylene terephthalate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69862168A | 1968-01-17 | 1968-01-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1193249A true GB1193249A (en) | 1970-05-28 |
Family
ID=24806005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB295469A Expired GB1193249A (en) | 1968-01-17 | 1969-01-17 | A process for improving the Dyeability of Polyester Filaments |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2000335A1 (en) |
| GB (1) | GB1193249A (en) |
| NL (1) | NL6900836A (en) |
-
1969
- 1969-01-16 FR FR6900673A patent/FR2000335A1/en not_active Withdrawn
- 1969-01-17 GB GB295469A patent/GB1193249A/en not_active Expired
- 1969-01-17 NL NL6900836A patent/NL6900836A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6900836A (en) | 1969-07-21 |
| FR2000335A1 (en) | 1969-09-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |