CA2181890A1 - Production d'acide polyaspartique a partir d'acide maleique et de gaz ammoniac - Google Patents

Production d'acide polyaspartique a partir d'acide maleique et de gaz ammoniac

Info

Publication number
CA2181890A1
CA2181890A1 CA002181890A CA2181890A CA2181890A1 CA 2181890 A1 CA2181890 A1 CA 2181890A1 CA 002181890 A CA002181890 A CA 002181890A CA 2181890 A CA2181890 A CA 2181890A CA 2181890 A1 CA2181890 A1 CA 2181890A1
Authority
CA
Canada
Prior art keywords
acid
ammonia
production
polyaspartic
maleic acid
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.)
Granted
Application number
CA002181890A
Other languages
English (en)
Other versions
CA2181890C (fr
Inventor
Larry P. Koskan
Abdul Rehman Y. Meah
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.)
Donlar Corp
Original Assignee
Individual
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
Priority claimed from US08/188,539 external-priority patent/US5373088A/en
Application filed by Individual filed Critical Individual
Publication of CA2181890A1 publication Critical patent/CA2181890A1/fr
Application granted granted Critical
Publication of CA2181890C publication Critical patent/CA2181890C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1092—Polysuccinimides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
CA002181890A 1994-01-28 1995-01-26 Production d'acide polyaspartique a partir d'acide maleique et de gaz ammoniac Expired - Fee Related CA2181890C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/188,539 US5373088A (en) 1992-09-18 1994-01-28 Production of polyaspartic acid from maleic acid and ammonia
US188,539 1994-01-28
PCT/US1995/001008 WO1995020618A1 (fr) 1994-01-28 1995-01-26 Production d'acide polyaspartique a partir d'acide maleique et de gaz ammoniac

Publications (2)

Publication Number Publication Date
CA2181890A1 true CA2181890A1 (fr) 1995-08-03
CA2181890C CA2181890C (fr) 2007-05-22

Family

ID=38152575

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002181890A Expired - Fee Related CA2181890C (fr) 1994-01-28 1995-01-26 Production d'acide polyaspartique a partir d'acide maleique et de gaz ammoniac

Country Status (1)

Country Link
CA (1) CA2181890C (fr)

Also Published As

Publication number Publication date
CA2181890C (fr) 2007-05-22

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150126