GB536130A - Improvements in or relating to the moulding of polymeric materials - Google Patents
Improvements in or relating to the moulding of polymeric materialsInfo
- Publication number
- GB536130A GB536130A GB26680/39A GB2668039A GB536130A GB 536130 A GB536130 A GB 536130A GB 26680/39 A GB26680/39 A GB 26680/39A GB 2668039 A GB2668039 A GB 2668039A GB 536130 A GB536130 A GB 536130A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heating
- mixture
- adipate
- sulphonamides
- extruding
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
Abstract
536,130. Moulding polyamides. DU PONT DE NEMOURS & CO., E. I. Sept. 26, 1939, No. 26680. Convention date, Sept. 30, 1938. [Class 2 (iii)] [Also in Group V] Shaped articles are prepared by heating to a temperature above its melting point sufficient to cause ready flow under pressure but insufficient to induce excessive fluidity a composition comprising a crystalline synthetic linear polyamide or polyester-polyamide with or without plasticizers and fillers, forcing the molten composition under pressure into a closed mould, cooling to the solid state within the mould and ejecting the formed article. Articles that may be made include combs, solid toilet ware, electric switch cases, electric insulation, vanity boxes, powder boxes, knobs, handles, buttons, jewellery, rods, tubes, printing rolls, stamping and printing dyes, machine bearings, shoe box toes, shoe heels, shoe counters, hookless fasteners, toys, unbreakable bottles, dentures, mouthpieces for pipes, printing plates, piano keys, billiard balls, ivory substitutes, gaskets and dishes. Suitable polymers include those derived from amino acids (or derivatives such as lactams), or from diamines and dibasic acids with or without the addition of reactants such as hydroxyacids or glycols. Plasticizers include sulphonamides (such as N-alkylated toluene sulphonamides), phenols (such as diphenylolpropane, diamylphenol, tertiary amylphenol) and cyclic ketones (such as camphor). Fillers include talc, kieselguhr, asbestos, mica, or effect materials such as pearl essence. In examples, molten compositions for injection into moulds are prepared by (1) heating a mixture of hexamethylene di-ammonium adipate and mixed toluene sulphonamides ; (2) heating a mixture of hexamethylene diammonium adipate, N- ethyl-o- and -p-toluene sulphonamides and p-tertiary-amylphenol, extruding into cold water grinding and melting ; (3) grinding polyhexamethylene adipamide and heating the powder ; (4) heating a mixture of hexamethylene diammonium adipate and decamethylene diammonium adipate, extruding into cold water, cutting and heating ; (5) heating a mixture of hexamethylenediammonium adipate and diamylphenol, with or without the addition of talc, extruding into cold water, cutting and heating; (6) heating a mixture of adipic acid, ethylene glycol and hexamethylene diammonium adipate, grinding the product and heating.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US536130XA | 1938-09-30 | 1938-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB536130A true GB536130A (en) | 1941-05-05 |
Family
ID=21985430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26680/39A Expired GB536130A (en) | 1938-09-30 | 1939-09-26 | Improvements in or relating to the moulding of polymeric materials |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB536130A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE970805C (en) * | 1953-03-07 | 1958-10-30 | Alfred Sell | Ball joint for steering rods of motor vehicles |
GB2212094A (en) * | 1987-11-06 | 1989-07-19 | Omnium Traitement Valorisa | Process and apparatus for the manufacture of an extruded or moulded article |
-
1939
- 1939-09-26 GB GB26680/39A patent/GB536130A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE970805C (en) * | 1953-03-07 | 1958-10-30 | Alfred Sell | Ball joint for steering rods of motor vehicles |
GB2212094A (en) * | 1987-11-06 | 1989-07-19 | Omnium Traitement Valorisa | Process and apparatus for the manufacture of an extruded or moulded article |
GB2212094B (en) * | 1987-11-06 | 1991-11-13 | Omnium Traitement Valorisa | Process and apparatus for the manufacture of an extruded or moulded article |
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