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ES444996A1 - Procedure for the preparation of foaming compositions for cellular polymers. (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure for the preparation of foaming compositions for cellular polymers. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES444996A1
ES444996A1 ES444996A ES444996A ES444996A1 ES 444996 A1 ES444996 A1 ES 444996A1 ES 444996 A ES444996 A ES 444996A ES 444996 A ES444996 A ES 444996A ES 444996 A1 ES444996 A1 ES 444996A1
Authority
ES
Spain
Prior art keywords
parts
azodicarbonamide
translation
preparation
legally binding
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
ES444996A
Other languages
Spanish (es)
Other versions
ES444996A0 (en
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 filed Critical
Priority to ES76444996A priority Critical patent/ES444996A0/en
Publication of ES444996A1 publication Critical patent/ES444996A1/en
Publication of ES444996A0 publication Critical patent/ES444996A0/en
Granted 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
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide

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)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Process for the preparation of foaming compositions for cellular polymers, especially suitable for the extrusion and injection foaming of pvc, high and low density polyethylene, polystyrene, polypropylene, natural and thermoplastic rubber and the like, characterized in that a combination formed by 60 to 90 parts, of an azodicarbonamide, or what is the same 1-1'-azobisformamide, with modifying agents thereof, essentially constituted by 1 to 20 parts of a complex former unstable with azodicarbonamide, composed of a decomposition activator of the spacer at low temperatures and neutralizing the acids formed therein, preferably of the metallic or organosal metal oxides type and with 4 to 30 parts of binary or ternary forming products with azodicarbonamide, integrated in turn by agents that enhance the nucleation and regulators of the cellular structure, in the presence, optional 0 to 20 parts of additives such as anticorrosive agents, crosslinkers and curing catalysts; in which embodiment the components are maintained in solid form at less than 50 micros in a complete homogenization process by cooling at a temperature lower than 50º c, for at least 1 hour and, optionally, part of said components to the liquid state, in suspension or dissolution if the solid product in the form of paste is desired. (Machine-translation by Google Translate, not legally binding)
ES76444996A 1976-02-09 1976-02-09 PROCEDURE FOR THE PREPARATION OF FOAMING COMPOSITIONS FOR CELLULAR POLYMERS. Granted ES444996A0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES76444996A ES444996A0 (en) 1976-02-09 1976-02-09 PROCEDURE FOR THE PREPARATION OF FOAMING COMPOSITIONS FOR CELLULAR POLYMERS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES76444996A ES444996A0 (en) 1976-02-09 1976-02-09 PROCEDURE FOR THE PREPARATION OF FOAMING COMPOSITIONS FOR CELLULAR POLYMERS.

Publications (2)

Publication Number Publication Date
ES444996A1 true ES444996A1 (en) 1977-05-01
ES444996A0 ES444996A0 (en) 1977-07-01

Family

ID=8470876

Family Applications (1)

Application Number Title Priority Date Filing Date
ES76444996A Granted ES444996A0 (en) 1976-02-09 1976-02-09 PROCEDURE FOR THE PREPARATION OF FOAMING COMPOSITIONS FOR CELLULAR POLYMERS.

Country Status (1)

Country Link
ES (1) ES444996A0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037188A1 (en) * 1980-03-21 1981-10-07 Schering Industrial Products Limited Chemical blowing agent composition, its composition and use

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037188A1 (en) * 1980-03-21 1981-10-07 Schering Industrial Products Limited Chemical blowing agent composition, its composition and use

Also Published As

Publication number Publication date
ES444996A0 (en) 1977-07-01

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