GB792955A - Polyamide powder compositions and method for the production thereof - Google Patents

Polyamide powder compositions and method for the production thereof

Info

Publication number
GB792955A
GB792955A GB3208156A GB3208156A GB792955A GB 792955 A GB792955 A GB 792955A GB 3208156 A GB3208156 A GB 3208156A GB 3208156 A GB3208156 A GB 3208156A GB 792955 A GB792955 A GB 792955A
Authority
GB
United Kingdom
Prior art keywords
powder
prepared
per cent
sebacamide
polyamides
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
Application number
GB3208156A
Inventor
Louis Lathrop Stott
Laurence Robert Basil Hervey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polymer Corp
Original Assignee
Polymer Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Polymer Corp filed Critical Polymer Corp
Priority to GB3208156A priority Critical patent/GB792955A/en
Publication of GB792955A publication Critical patent/GB792955A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
    • C08L77/08—Polyamides derived from polyamines and polycarboxylic acids from polyamines and polymerised unsaturated fatty acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A moulding powder, suitable, e.g., for the cold pressing and sintering process claimed in Specification 792,954, comprises two polyamides of different melting-points, the lower melting one being 15-70 per cent by weight of the mixture and at least the higher melting one having average particle dimensions not greater than 40 microns. Up to 85 per cent of the total volume of the powder may be finely-divided inert filler, e.g. diamond dust, silica, carborundum, chalk, alundum, tungsten carbide, copper, lead, iron, carbon, graphite, molybdenum disulphide, ceramic materials, e.g. titanium dioxide or titanates, magnetic metals or oxides, or polytetrafluorethylene. Suitable polyamides are polyhexamethylene adipamide or sebacamide and polycaprolactam. The polyamide powders may be prepared by precipitation from solution (as in Specifications 690,936, 691,114 and 740,356). The compositions may be granulated. In an example, polyhexamethylene adipamide powder (M.P. 271 DEG C.) was prepared from clean waste nylon and polyhexamethylene sebacamide (M.P. 224 DEG C.) from virgin material. 70 parts of the first powder were mixed with 20 of the second, tableted, ground and sieved to pass an 80 mesh screen. The composition may be used for sintered articles or for fusion coatings. Specification 763,939 and 763,940 also are referred to.
GB3208156A 1954-07-01 1954-07-01 Polyamide powder compositions and method for the production thereof Expired GB792955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3208156A GB792955A (en) 1954-07-01 1954-07-01 Polyamide powder compositions and method for the production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3208156A GB792955A (en) 1954-07-01 1954-07-01 Polyamide powder compositions and method for the production thereof

Publications (1)

Publication Number Publication Date
GB792955A true GB792955A (en) 1958-04-09

Family

ID=10332920

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3208156A Expired GB792955A (en) 1954-07-01 1954-07-01 Polyamide powder compositions and method for the production thereof

Country Status (1)

Country Link
GB (1) GB792955A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2856625A1 (en) * 2003-06-27 2004-12-31 Rhodia Engineering Plastics Sa MANUFACTURE OF ARTICLES BY ROTOMOLDING
CN110819104A (en) * 2018-07-23 2020-02-21 上海杰事杰新材料(集团)股份有限公司 High-dimensional-precision nylon powder for 3D printing and preparation method and application thereof
CN110938206A (en) * 2013-05-01 2020-03-31 英威达纺织（英国）有限公司 Reduced gel formation in polyamide manufacturing processes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2856625A1 (en) * 2003-06-27 2004-12-31 Rhodia Engineering Plastics Sa MANUFACTURE OF ARTICLES BY ROTOMOLDING
WO2005000555A2 (en) * 2003-06-27 2005-01-06 Rhodia Engineering Plastics S.R.L. Method of producing articles by means of rotational moulding
WO2005000555A3 (en) * 2003-06-27 2005-03-10 Rhodia Eng Plastics Srl Method of producing articles by means of rotational moulding
CN110938206A (en) * 2013-05-01 2020-03-31 英威达纺织（英国）有限公司 Reduced gel formation in polyamide manufacturing processes
CN110938206B (en) * 2013-05-01 2022-11-04 英威达纺织（英国）有限公司 Reduced gel formation in polyamide manufacturing processes
CN110819104A (en) * 2018-07-23 2020-02-21 上海杰事杰新材料(集团)股份有限公司 High-dimensional-precision nylon powder for 3D printing and preparation method and application thereof

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