GB822976A - N:n dinitroso-n : n-dimethylglutaramide and its use in the manufacture of cellular solids - Google Patents

N:n dinitroso-n : n-dimethylglutaramide and its use in the manufacture of cellular solids

Info

Publication number
GB822976A
GB822976A GB1333957A GB1333957A GB822976A GB 822976 A GB822976 A GB 822976A GB 1333957 A GB1333957 A GB 1333957A GB 1333957 A GB1333957 A GB 1333957A GB 822976 A GB822976 A GB 822976A
Authority
GB
United Kingdom
Prior art keywords
rubber
glutaramide
dinitroso
dimethyl
referred
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
GB1333957A
Inventor
Robert Alfred Darrall
Arthur Lambert
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 GB1333957A priority Critical patent/GB822976A/en
Publication of GB822976A publication Critical patent/GB822976A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/107—Nitroso compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

A blowing agent for natural rubber and synthetic polymers which starts to decompose at 60 DEG C. and can be used with plastics containing small amounts of mineral acid is N:N1-dinitroso - N:N1 - dimethylglutaramide. Synthetic polymers referred to are those from butadiene, styrene, acrylamide, vinyl acetate, vinyl chloride and acrylic and methacrylic acid esters. Several examples of blown natural rubber are given ranging from a microcellular rubber of 150% expansion to a cellular rubber of 480% expansion. Specification 587,023, [Group IV], is referred to.ALSO:The invention comprises N,N1-dinitroso-N,N1-dimethyl glutaramide which may be prepared by treating N,N1-dimethyl glutaramide with nitrous acid or nitrosyl chloride, preferably at between - 10 DEG and 25 DEG C. The nitrosation may also be carried out by adding sodium nitrite to a mixture of the glutaramide and hydrochloric acid. In the examples: (1) HCl is added to a mixture of N,N1-dimethyl glutaramide, sodium nitrite and water at - 5 DEG C. over 2 hours, further nitrite is added followed by further HCl, keeping the temperature below 3 DEG C., 79% of a yellow solid decomposing at 80 DEG C. is obtained; (2) a similar preparation is carried out below 15 DEG C.; (2) a mixture of the N,N1-dimethyl amides of glutaric, succinic and adipic acids, obtained by treating a mixture of the esters with methylamine, is nitrosated by a similar method. N,N1-dimethyl-N,N1-dinitroso glutaramide may be used as a blowing agent for preparing rubber and plastics in a cellular form. Specification 587,023, [Group IV], is referred to.ALSO:A blowing agent for natural rubber and synthetic polymers which starts to decompose at 60 DEG C. and can be used with plastics containing small amounts of invinyl acid is N : N1-dinitroso-N : N1-dimethylgluteramide. Synthetic polymers referred to are those from butadiene, styrene, acrylamide, vinyl acetate, vinyl chloride and acrylic and methacrylic acid esters. Several examples of blown natural rubber are given ranging from a microcellular rubber of 150% expansion to a cellular rubber of 480% expansion. Specification 587,023 is referred to.
GB1333957A 1957-04-26 1957-04-26 N:n dinitroso-n : n-dimethylglutaramide and its use in the manufacture of cellular solids Expired GB822976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1333957A GB822976A (en) 1957-04-26 1957-04-26 N:n dinitroso-n : n-dimethylglutaramide and its use in the manufacture of cellular solids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1333957A GB822976A (en) 1957-04-26 1957-04-26 N:n dinitroso-n : n-dimethylglutaramide and its use in the manufacture of cellular solids

Publications (1)

Publication Number Publication Date
GB822976A true GB822976A (en) 1959-11-04

Family

ID=10021146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1333957A Expired GB822976A (en) 1957-04-26 1957-04-26 N:n dinitroso-n : n-dimethylglutaramide and its use in the manufacture of cellular solids

Country Status (1)

Country Link
GB (1) GB822976A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008040947A2 (en) * 2006-10-02 2008-04-10 Almac Sciences Limited Soluble diazoalkane precursors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008040947A2 (en) * 2006-10-02 2008-04-10 Almac Sciences Limited Soluble diazoalkane precursors
WO2008040947A3 (en) * 2006-10-02 2008-07-31 Almac Sciences Ltd Soluble diazoalkane precursors

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