GB854223A - Improved polyamide manufacturing process - Google Patents

Improved polyamide manufacturing process

Info

Publication number
GB854223A
GB854223A GB3962357A GB3962357A GB854223A GB 854223 A GB854223 A GB 854223A GB 3962357 A GB3962357 A GB 3962357A GB 3962357 A GB3962357 A GB 3962357A GB 854223 A GB854223 A GB 854223A
Authority
GB
United Kingdom
Prior art keywords
diamine
acid
aqueous
aliphatic
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
GB3962357A
Inventor
Cecil Shaw
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3962357A priority Critical patent/GB854223A/en
Priority to FR782257A priority patent/FR1223387A/en
Publication of GB854223A publication Critical patent/GB854223A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • C08G69/28—Preparatory processes

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)
  • Polyamides (AREA)

Abstract

Polyamides are made by heating a mixture of substantially equimolecular proportions of an aliphatic dicarboxylic acid and an aliphatic or araliphatic diamine at substantially atmospheric pressure, the aqueous vapours produced being fractionated so that p any diamine contained in the aqueous vapour is removed therefrom and returned to the reaction vessel. Specified diamines and dicarboxylic acids are hexamethylene diamine, decamethylene diamine, g -methylhexamethylene diamine, m- and p-xylene diamine, adipic, sebacic and azelaic acid. Up to 40% by weight of the aliphatic acid may be replaced by an aromatic acid, e.g. m- and p-phthalic acid. Modifying agents and additives which may be present in the reaction mixture include acetic acid, titanium dioxide, cadmium yellow, red iron oxide, phthalocyanines and carbon black. The examples describe the preparation of polyamides from:-(1) aqueous hexamethylene diammonium adipate and (2) aqueous hexamethylene diammonium sebacate.
GB3962357A 1957-12-20 1957-12-20 Improved polyamide manufacturing process Expired GB854223A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3962357A GB854223A (en) 1957-12-20 1957-12-20 Improved polyamide manufacturing process
FR782257A FR1223387A (en) 1957-12-20 1958-12-20 Process for manufacturing polyamides under atmospheric pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3962357A GB854223A (en) 1957-12-20 1957-12-20 Improved polyamide manufacturing process

Publications (1)

Publication Number Publication Date
GB854223A true GB854223A (en) 1960-11-16

Family

ID=10410573

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3962357A Expired GB854223A (en) 1957-12-20 1957-12-20 Improved polyamide manufacturing process

Country Status (2)

Country Link
FR (1) FR1223387A (en)
GB (1) GB854223A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296217A (en) * 1964-06-01 1967-01-03 Monsanto Co Continuous polymerization process for polyamide preparation
US3402152A (en) * 1964-05-15 1968-09-17 Monsanto Co Process for preparing a polyamide
EP0060653A2 (en) * 1981-03-05 1982-09-22 E.I. Du Pont De Nemours And Company Improved diamine recovery process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402152A (en) * 1964-05-15 1968-09-17 Monsanto Co Process for preparing a polyamide
US3296217A (en) * 1964-06-01 1967-01-03 Monsanto Co Continuous polymerization process for polyamide preparation
EP0060653A2 (en) * 1981-03-05 1982-09-22 E.I. Du Pont De Nemours And Company Improved diamine recovery process
EP0060653A3 (en) * 1981-03-05 1982-10-27 E.I. Du Pont De Nemours And Company Improved diamine recovery process

Also Published As

Publication number Publication date
FR1223387A (en) 1960-06-16

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