IT1057668B - N,N'-Disubstd. sulphonyl-hydrazines useful as blowing agents - by reacting hydrocarbyl isocyanate with hydrocarbyl hydrocarbyl-sulphonyl-carbazate and base - Google Patents
N,N'-Disubstd. sulphonyl-hydrazines useful as blowing agents - by reacting hydrocarbyl isocyanate with hydrocarbyl hydrocarbyl-sulphonyl-carbazate and baseInfo
- Publication number
- IT1057668B IT1057668B IT6752376A IT6752376A IT1057668B IT 1057668 B IT1057668 B IT 1057668B IT 6752376 A IT6752376 A IT 6752376A IT 6752376 A IT6752376 A IT 6752376A IT 1057668 B IT1057668 B IT 1057668B
- Authority
- IT
- Italy
- Prior art keywords
- hydrocarbyl
- sulphonyl
- disubstd
- blowing agents
- carbazate
- Prior art date
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
-
- 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
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
N,N'-Disubstd. sulphonyl-hydrazines useful as blowing agents for plastics and rubbers have the formula (I): R(SO2NR1NHR2)n (where R is hydrocarbyl; R1 is CONHR4;R2 is COOR3; R3 is hydrocarbyl; R4 is H or hydrocarbyl; and n is 1 or 2). Cpds. (I) decompose in a non-explosive, controlled manner at elevated temps. to release small amts. of nitrogen and larger amts. of carbon dioxide and gaseous hydrocarbon; do not attack the polymers or the appts.; can be used with a wide range of polymers, and esp. useful for expansion of polymers above 200 degrees C. Some cpds. can be used above 250 degrees C.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US63847475A | 1975-12-08 | 1975-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1057668B true IT1057668B (en) | 1982-03-30 |
Family
ID=24560188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT6752376A IT1057668B (en) | 1975-12-08 | 1976-03-04 | N,N'-Disubstd. sulphonyl-hydrazines useful as blowing agents - by reacting hydrocarbyl isocyanate with hydrocarbyl hydrocarbyl-sulphonyl-carbazate and base |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE839342A (en) |
IT (1) | IT1057668B (en) |
-
1976
- 1976-03-04 IT IT6752376A patent/IT1057668B/en active
- 1976-03-09 BE BE164972A patent/BE839342A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BE839342A (en) | 1976-09-09 |
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