GB681121A - Improvements in making gas-expanded organic plastics - Google Patents
Improvements in making gas-expanded organic plasticsInfo
- Publication number
- GB681121A GB681121A GB25578/50A GB2557850A GB681121A GB 681121 A GB681121 A GB 681121A GB 25578/50 A GB25578/50 A GB 25578/50A GB 2557850 A GB2557850 A GB 2557850A GB 681121 A GB681121 A GB 681121A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrazine
- acids
- salt
- organo
- salicylic
- 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
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Gas expanded organo plastic material is obtained by mixing hydrazine, hydrazine hydrate, or a salt of hydrazine with an organo plastic material such as rubbery copolymers of butadiene with styrene, or acrylonitrile, or of isobutylene with butadiene or isoprene, or polychloroprene, polyacrylonitrile, polystyrene, polyvinyl chloride, copolymers of vinyl chloride and vinyl acetate, alkyd resins, urea formaldehyde, cellulose acetate or ethyl cellulose, which is normally solid and has sufficient consistency and tensile strength at the blowing temperature to retain the expanded structure, and heating the mixture thus effecting expansion of the mixture. The hydrazine salt may be formed from the following acids:-formic, acetic, propionic, butyric, valeric, caproic, caprylic, capric, lauric, myristic, palmitic, stearic, oxalic, malonic, succinic, glutaric, adipic, pimelic, suberic, azelaic, sebacic, malic, tartaric, citric, benzoic, salicylic, acetyl-salicylic, phthalic, linoleic, linolenic, undecylenic, oleic, ricinoleic, and elaeostearic acids, and inorganic acids such as sulphuric, hydrochloric and phosphoric acids. In addition hydrazine salts of non-carboxylic acids such as hydrazinium dithiocarbazate, hydrazine benzene sulphonate, hydrazine toluene sulphonate and hydrazine carbazate may be used. In an example (No. 31), a mix consisting of polyvinyl chloride, lead stearate, mono-hydrazine oxalate and tri-octyl phosphate was heated in a press at 330-350 DEG F. for 12 minutes.ALSO:Gas expanded organo plastic material is obtained by mixing hydrazine, hydrazine hydrate, or a salt of hydrazine with an organo plastic material such as rubber, which is normally solid and has sufficient consistency and tensile strength at the blowing temperature to retain the expanded structure, and heating the mixture thus effecting expansion of the mixture. The hydrazine salt may be formed from the following acids: formic, acetic, propionic, butyric, valeric, caproic, caprylic, capric, lauric, myristic, palmitic, stearic, oxalic, malonic, succinic, glutaric, adipic, pimelic, suberic, azelaic, sebacic, malic, tartaric, citric, benzoic, salicylic, acetyl-salicylic, phthalic, linoleic, linolenic, undecylenic, oleic, ricinoleic, and elaeostearic acids, and inorganic acids such as sulphuric, hydrochloric and phosphoric acids. In addition hydrazine salts of noncarboxylic acids such as hydrazinium dithiocarbazate, hydrazine benzene sulphonate, hydrazine toluene sulphonate and hydrazine carbazate may be used. In examples the effects produced by the action of various hydrazine compounds were demonstrated on master batches consisting of: (1)-(14), pale cr<\>zepe rubber, limestone, zinc oxide, zinc diethyl dithiocarbamate, benzothiazyl disulphide and paraffin oil, (15) flat bark rubber, whiting, zinc oxide, black pigment, oleic acid, retarder, benzothiazyl disulphide, paraffin oil, sulphur, sodium bicarbonate, (16)-(30) pale crepe, zinc oxide, calcium carbonate, lithopone, zinc salt of cocoanut fatty acids, petrolatum, sulphur bis(benzothiazole) disulphide.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US681121XA | 1950-02-23 | 1950-02-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB681121A true GB681121A (en) | 1952-10-15 |
Family
ID=22080479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25578/50A Expired GB681121A (en) | 1950-02-23 | 1950-10-20 | Improvements in making gas-expanded organic plastics |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB681121A (en) |
-
1950
- 1950-10-20 GB GB25578/50A patent/GB681121A/en not_active Expired
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