GB731520A - Improvements in making gas-expanded rubber - Google Patents
Improvements in making gas-expanded rubberInfo
- Publication number
- GB731520A GB731520A GB35448/53A GB3544853A GB731520A GB 731520 A GB731520 A GB 731520A GB 35448/53 A GB35448/53 A GB 35448/53A GB 3544853 A GB3544853 A GB 3544853A GB 731520 A GB731520 A GB 731520A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reaction product
- mixture
- rubber
- gas
- mix
- 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
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
-
- 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
- C08J2321/00—Characterised by the use of unspecified rubbers
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)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Vulcanized gas-expanded synthetic rubber is produced by incorporating the reaction product of hydrazine and sulphur dioxide in a vulcanizable rubber mix, shaping the mixture containing the reaction product in undecomposed form, and subsequently heating the shaped mixture so as to evolve gas and then vulcanize the mixture to a cellular mass. The reaction product has the probable formula <FORM:0731520/IV (a)/1> and decomposes at approximately 185 DEG F. The synthetic rubber may be a polymer of butadiene, isoprene or chloroprene; or a copolymer of butadiene with styrene, acrylonitrile or isobutylene. Specification 692,142 is referred to.ALSO:Vulcanized gas-expanded rubber is produced by incorporating the reaction product of hydrazine and sulphur dioxide in a vulcanizable rubber mix, shaping the mixture containing the reaction product in undecomposed form, and subsequently heating the shaped mixture so as to evolve gas and then vulcanize the mixture to a cellular mass. The reaction product has the probable formula:- <FORM:0731520/V/1> and decomposes at approximately 185 DEG F. In examples, from 0.5 to 2.5 parts of the reaction product are added to 100 parts of pale crepe rubber, the mix also including zinc oxide, whiting, lithopone, zinc laurate, petrolatum, sulphur and benzothiazyl disulphide. Specification 692,142 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US731520XA | 1953-01-07 | 1953-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB731520A true GB731520A (en) | 1955-06-08 |
Family
ID=22112037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35448/53A Expired GB731520A (en) | 1953-01-07 | 1953-12-21 | Improvements in making gas-expanded rubber |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB731520A (en) |
-
1953
- 1953-12-21 GB GB35448/53A patent/GB731520A/en not_active Expired
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