GB534698A - Treatment of synthetic polyamide filaments, fabrics, films and other articles, to improve their resilience and other properties - Google Patents
Treatment of synthetic polyamide filaments, fabrics, films and other articles, to improve their resilience and other propertiesInfo
- Publication number
- GB534698A GB534698A GB25698/39A GB2569839A GB534698A GB 534698 A GB534698 A GB 534698A GB 25698/39 A GB25698/39 A GB 25698/39A GB 2569839 A GB2569839 A GB 2569839A GB 534698 A GB534698 A GB 534698A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formaldehyde
- bristles
- polyamide
- dried
- fabrics
- 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
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/12—Aldehydes; Ketones
- D06M13/127—Mono-aldehydes, e.g. formaldehyde; Monoketones
-
- 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
- C08G69/50—Polymers modified by chemical after-treatment with aldehydes
Abstract
534,698. Artificial filaments, films etc.; treating textiles with liquids ; resinous condensation &c. products. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Sept. 13, 1939, No. 25698. Convention date, Sept. 14, 1938. [Classes 2 (ii), 2 (iii), and 15 (ii)] [Also in Group VIII] Yarns, bristles, fabrics, ribbons, films, sheets, or other articles formed from fibre-forming synthetic polyamides are subjected to the action of formaldehyde or a substance capable of liberating formaldehyde. The polyamides may be obtained from monoamino monocarboxylic acids or their amide forming derivatives, or from diamines by reaction with dicarboxylic acids or amide forming derivatives of dibasic carboxylic acids. The formaldehyde treatment increases the power of filaments, bristles, and the like to recover their shape after deformation, and increases their resistance to deterioration in the presence of ultra-violet light. Treatment of crimped polyamide fibres improves the permanency of the crimp. The stiffness of bristles may be increased. Waterrepellency may be imparted to fabrics or yarns particularly when the formaldehyde-liberating substance contains a long chain aliphatic radical e.g. methylol stearamide, or when the fabric is impregnated first with stearamide and then with formaldehyde and is subse-, quently dried and baked. The intrinsic viscosity of the polyamides is increased by heating with aqueous formaldehyde. Yarns or fabrics which have been treated with formaldehyde or the equivalent may be used in the production of stockings or flags. Polyamide bristles so treated may be used for the production of surgical sutures, fishing lines, or brushes. During the formaldehyde treatment the pH of the reaction medium is preferably not allowed to be below 3.0. In an example, melt-spun polyhexamethylene adipamide yarn is cold drawn while wet with water and dried in relaxed condition so as to become crimped. The yarn is immersed in an aqueous solution of formaldehyde containing ammonium chloride as catalyst and then allowed to crimp by being dried in relaxed condition. - It is then baked at 150C. The treatment imparts a high degree of crimp retentivity. Cold drawn polyamide bristles are conditioned by immersion in boiling water and then heated in a sealed vessel at 100 C. for one day with a slightly acid formaldehyde solution containing potassium hydrogen phthalate. The bristles have a high power of recovery from deformation. Cold drawn polyamide bristles are heated in a sealed vessel with dimethylol urea and water and then washed and dried. Yarn is treated similarly and is found to have increased resistance to degradation by ultra-violet light e.g. from a carbon arc. Crepe de Chine type fabric made of polyamide yarn is impregnated with sodium phosphate, dried, immersed in a solution of methylol stearamide in ethyl alcohol, dried, and baked. The treated fabric is water repellent. Formaldehyde derivatives which may be used include hexamine, methylol mercaptan, methylol ureides, methylol amines, and hydroxymethyl ethers. Phthalic, boric, or formic acid, or sodium acetate, borate, or bisulphate may be used as catalyst. The reaction may be carried out in water, alcohols, ketones, or other non- solvents, and it may be effected at raised temperature and pressure. Specified polyamides are polypentamethylene sebacamide, polydecamethylene adipamide, poly-p-xylylene sebacamide, polycaprolactam, and poly-11- amino undecanoic acid. Interpolymers e.g. one prepared from hexamethylene diamine, decamethylene diamine, adipic, and sebacic acid and polymers such as that obtained from adipic acid, hexamethylene diamine, and #- hydroxydecanoic acid may be used. The polyamide may contain plasticizers, pigments, delustrants, oils, and resins. It may contain phenol or urea which reacts with the formaldehyde when the polyamide articles are treated with this reagent. The process may be applied to mixed yarns and fabrics. Specification 461,237 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US229972A US2177637A (en) | 1938-09-14 | 1938-09-14 | Polymeric material |
Publications (1)
Publication Number | Publication Date |
---|---|
GB534698A true GB534698A (en) | 1941-03-14 |
Family
ID=22863443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25698/39A Expired GB534698A (en) | 1938-09-14 | 1939-09-13 | Treatment of synthetic polyamide filaments, fabrics, films and other articles, to improve their resilience and other properties |
Country Status (5)
Country | Link |
---|---|
US (1) | US2177637A (en) |
DE (1) | DE711682C (en) |
FR (1) | FR860239A (en) |
GB (1) | GB534698A (en) |
NL (1) | NL53134C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2606155A (en) * | 1946-11-26 | 1952-08-05 | Koppers Co Inc | Cleaning and pickling composition for metals |
US2685497A (en) * | 1948-05-12 | 1954-08-03 | Celanese Corp | Treatment of polymeric materials |
US2895287A (en) * | 1956-09-21 | 1959-07-21 | American Viscose Corp | Production of bulky resin spun rayon yarn |
US2895288A (en) * | 1956-09-21 | 1959-07-21 | American Viscose Corp | Production of bulky colorspun rayon yarn |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2424883A (en) * | 1941-10-14 | 1947-07-29 | Ici Ltd | Paraformaldehyde modified reaction products of diisocyanates with linear polyester polyamide |
DE953916C (en) * | 1942-10-22 | 1956-12-06 | Bayer Ag | Process for improving the shrinkage resistance of molded products made of polyacrylic acid nitrile |
DE864436C (en) * | 1942-12-18 | 1953-01-26 | Ici Ltd | Process for the production of threads or fibers with improved properties from synthetic linear polyamides |
BE463110A (en) * | 1943-01-18 | |||
US2432148A (en) * | 1943-02-10 | 1947-12-09 | Ici Ltd | Curing of diisocyanate-modified polyester |
BE459709A (en) * | 1944-08-15 | |||
US2430953A (en) * | 1945-02-20 | 1947-11-18 | Du Pont | Process for improving the properties of polyamide fibers |
US2441085A (en) * | 1945-02-20 | 1948-05-04 | Du Pont | Process of making nylon fabrics elastic by treatment with formaldehyde |
US2477156A (en) * | 1946-04-12 | 1949-07-26 | Du Pont | Treatment of synthetic linear polyamide threads |
GB616549A (en) * | 1946-04-26 | 1949-01-24 | Dunlop Rubber Co | Improvements in and relating to the treatment of nylon thread |
US2540726A (en) * | 1946-12-03 | 1951-02-06 | Du Pont | Treatment of a heat set, oriented nylon fabric with formaldehyde |
US2516562A (en) * | 1946-12-03 | 1950-07-25 | Du Pont | Process of making artificial wool from nylon fibers |
US2514550A (en) * | 1948-02-14 | 1950-07-11 | Celanese Corp | Treatment of synthetic fibers with formaldehyde |
US2645266A (en) * | 1950-12-13 | 1953-07-14 | Specialties Dev Co | Reinforced rubber structure and method of treating nylon yarn for use in making same |
DE1009152B (en) * | 1952-03-08 | 1957-05-29 | Inventa Ag | Process for increasing the melting point of yarns and threads made of synthetic linear polyamides |
GB765374A (en) * | 1954-10-08 | 1957-01-09 | Bernard Wardle Everflex Ltd | Improvements in or relating to thermoplastic synthetic resin-coated fabrics |
US3344098A (en) * | 1961-10-31 | 1967-09-26 | Dainichiseika Color Chem | Method of making a chromogen bonded polymer and products thereof |
NL301142A (en) * | 1962-12-21 | |||
DE1238613B (en) * | 1963-12-07 | 1967-04-13 | Hoechst Ag | Process for the production of threads from poly-4,4-dimethylazetidin-2-one |
DE1289240B (en) * | 1965-06-12 | 1969-02-13 | Basf Ag | Process for producing crimped threads from thermoplastic high polymers |
WO1984002357A1 (en) * | 1982-12-17 | 1984-06-21 | Schweizerische Viscose | Crimped polyester yarn based on a partially orientated, cold drawn polyester yarn and manufacturing process thereof |
-
1938
- 1938-09-14 US US229972A patent/US2177637A/en not_active Expired - Lifetime
-
1939
- 1939-09-13 GB GB25698/39A patent/GB534698A/en not_active Expired
- 1939-09-13 FR FR860239D patent/FR860239A/en not_active Expired
- 1939-09-14 DE DEP79744A patent/DE711682C/en not_active Expired
- 1939-09-14 NL NL53134D patent/NL53134C/xx active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2606155A (en) * | 1946-11-26 | 1952-08-05 | Koppers Co Inc | Cleaning and pickling composition for metals |
US2685497A (en) * | 1948-05-12 | 1954-08-03 | Celanese Corp | Treatment of polymeric materials |
US2895287A (en) * | 1956-09-21 | 1959-07-21 | American Viscose Corp | Production of bulky resin spun rayon yarn |
US2895288A (en) * | 1956-09-21 | 1959-07-21 | American Viscose Corp | Production of bulky colorspun rayon yarn |
Also Published As
Publication number | Publication date |
---|---|
US2177637A (en) | 1939-10-31 |
NL53134C (en) | 1942-09-15 |
FR860239A (en) | 1941-01-09 |
DE711682C (en) | 1941-10-14 |
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