BE558596A - Procede pour la preparation de pyrrolidones disubstituees. - Google Patents

Procede pour la preparation de pyrrolidones disubstituees.

Info

Publication number
BE558596A
BE558596A BE558596A BE558596A BE558596A BE 558596 A BE558596 A BE 558596A BE 558596 A BE558596 A BE 558596A BE 558596 A BE558596 A BE 558596A BE 558596 A BE558596 A BE 558596A
Authority
BE
Belgium
Prior art keywords
pyrrolidons
disubstituted
preparation
disubstituted pyrrolidons
Prior art date
Application number
BE558596A
Other languages
English (en)
Original Assignee
Hoffmann La Roche
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 Hoffmann La Roche filed Critical Hoffmann La Roche
Publication of BE558596A publication Critical patent/BE558596A/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2/14—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element
    • E04B2/22—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element using elements having a general shape differing from that of a parallelepiped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0256—Special features of building elements
    • E04B2002/026—Splittable building elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
BE558596A 1956-07-25 1957-06-21 Procede pour la preparation de pyrrolidones disubstituees. BE558596A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH558596X 1956-07-25

Publications (1)

Publication Number Publication Date
BE558596A true BE558596A (fr) 1960-03-25

Family

ID=4520136

Family Applications (1)

Application Number Title Priority Date Filing Date
BE558596A BE558596A (fr) 1956-07-25 1957-06-21 Procede pour la preparation de pyrrolidones disubstituees.

Country Status (2)

Country Link
BE (1) BE558596A (fr)
FR (1) FR558596A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2983887A1 (fr) * 2007-09-26 2013-06-14 Pradier Blocs Bloc de maconnerie ajustable.

Also Published As

Publication number Publication date
FR558596A (fr) 1923-08-30

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