FR2393825A1 - PROCESS FOR PREPARING COPOLYAMIDES OF ISOPHTHALIC ACID ALLOWING THE USE OF AN IMPUR ISOPHTHALIC ACID - Google Patents

PROCESS FOR PREPARING COPOLYAMIDES OF ISOPHTHALIC ACID ALLOWING THE USE OF AN IMPUR ISOPHTHALIC ACID

Info

Publication number
FR2393825A1
FR2393825A1 FR777723313A FR7723313A FR2393825A1 FR 2393825 A1 FR2393825 A1 FR 2393825A1 FR 777723313 A FR777723313 A FR 777723313A FR 7723313 A FR7723313 A FR 7723313A FR 2393825 A1 FR2393825 A1 FR 2393825A1
Authority
FR
France
Prior art keywords
isophthalic acid
impur
allowing
copolyamides
hexamethylenediamine
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.)
Withdrawn
Application number
FR777723313A
Other languages
French (fr)
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of FR2393825A1 publication Critical patent/FR2393825A1/en
Withdrawn legal-status Critical Current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)
  • Polyamides (AREA)

Abstract

Procédé perfectionné pour la préparation de copolyamides thermoplastiques transparents par polycondensation de sels de l'acide isophtalique, de l'hexaméthylènediamine et de l'isophoronediamine selon des modes opératoires connus. On utilise un acide isophtalique contenant jusqu'à 1,6 % en poids d'impuretés pour former le sel d'hexaméthylènediamine et d'isophronediamine et on soumet le sel à polycondensation sans l'isoler ni le purifier. Le procédé selon l'invention apporte des économies évidentes sans amoindrissement de la qualité des produits obtenus.Improved process for the preparation of transparent thermoplastic copolyamides by polycondensation of salts of isophthalic acid, hexamethylenediamine and isophoronediamine according to known procedures. Isophthalic acid containing up to 1.6% by weight of impurities is used to form the hexamethylenediamine and isophronediamine salt and the salt is subjected to polycondensation without isolating or purifying it. The process according to the invention provides obvious savings without reducing the quality of the products obtained.

FR777723313A 1977-06-10 1977-07-28 PROCESS FOR PREPARING COPOLYAMIDES OF ISOPHTHALIC ACID ALLOWING THE USE OF AN IMPUR ISOPHTHALIC ACID Withdrawn FR2393825A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772726213 DE2726213A1 (en) 1977-06-10 1977-06-10 THERMOPLASTIC COPOLYAMID

Publications (1)

Publication Number Publication Date
FR2393825A1 true FR2393825A1 (en) 1979-01-05

Family

ID=6011192

Family Applications (1)

Application Number Title Priority Date Filing Date
FR777723313A Withdrawn FR2393825A1 (en) 1977-06-10 1977-07-28 PROCESS FOR PREPARING COPOLYAMIDES OF ISOPHTHALIC ACID ALLOWING THE USE OF AN IMPUR ISOPHTHALIC ACID

Country Status (4)

Country Link
JP (1) JPS543898A (en)
DE (1) DE2726213A1 (en)
FR (1) FR2393825A1 (en)
GB (1) GB1590526A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6050106U (en) * 1983-09-14 1985-04-09 大日本印刷株式会社 Cup-shaped synthetic resin multilayer container

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1368070A (en) * 1962-09-06 1964-07-24 Grace W R & Co Linear polyamides obtained from mixtures of dicarboxylic acids and process for their preparation
FR1563484A (en) * 1967-05-18 1969-04-11
GB1326023A (en) * 1970-09-30 1973-08-08 Bp Chem Int Ltd Polyamides

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1368070A (en) * 1962-09-06 1964-07-24 Grace W R & Co Linear polyamides obtained from mixtures of dicarboxylic acids and process for their preparation
FR1563484A (en) * 1967-05-18 1969-04-11
GB1326023A (en) * 1970-09-30 1973-08-08 Bp Chem Int Ltd Polyamides

Also Published As

Publication number Publication date
GB1590526A (en) 1981-06-03
JPS543898A (en) 1979-01-12
DE2726213A1 (en) 1978-12-14

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Legal Events

Date Code Title Description
RE Withdrawal of published application