GB686814A - Improvements in making gas-expanded organoplastics - Google Patents
Improvements in making gas-expanded organoplasticsInfo
- Publication number
- GB686814A GB686814A GB12572/51A GB1257251A GB686814A GB 686814 A GB686814 A GB 686814A GB 12572/51 A GB12572/51 A GB 12572/51A GB 1257251 A GB1257251 A GB 1257251A GB 686814 A GB686814 A GB 686814A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphonyl
- hydrazide
- benzene
- sulphonyl hydrazide
- hydrazides
- 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
- C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
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)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
Polyvinyl chloride is made porous by incorporating therewith an aromatic sulphonyl hydrazide and heating. The sulphonyl hydrazides have the formula R-502 NH.NH2, where R is benzene, naphthyl or bi-phenyl and which may be further substituted by halogen, alkyl, acetyl, acetamino, hydroxy, carboxy and carbalkoxy, a list of such compounds being given. There may be a plurality of sulphonyl hydrazide groups per molecule. In an example, a mixture of polyvinyl chloride, calcium stearate, tricresyl phosphate and blowing agent is heated in a spherical mould under pressure, the mould is cooled, the pressure released and the ball removed. Expansion is then effected by holding the ball in boiling water. The sulphonyl hydrazide may be used in conjunction with known blowing agents such as sodium bicarbonate.ALSO:Gas expanded organic plastic materials are prepared by mixing an aromatic sulphonyl hydrazide with the plastic material, shaping the mixture and heating. In examples the plastic materials are rubber and polyvinylchloride, whilst the sulphonyl hydrazides are benzene sulphonyl hydrazide, naphthalene-b -sulphonyl hydrazide, toluene 2,4,disulphonyl hydrazide, p, p1-oxy-bis-benzene sulphonyl hydrazide, naphthalene - 2-7-disulphonyl hydrazide, and p-p1-bis-benzene sulphonyl hydrazide. The sulphonyl hydrazides have the formula R-So2 NH.NH2 where R is e.g. benzene, naphthyl or biphenyl, and which may be further substituted by halogen, alkyl, acetyl, acetamino, hydroxy, carboxy, and carbalkoxy, a list of such compounds being given. These may be a plurality of sulphonyl hydrazide groups per radicle. Plasticizers and other compounding agents are also present.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US686814XA | 1950-07-26 | 1950-07-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB686814A true GB686814A (en) | 1953-01-28 |
Family
ID=22084072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12572/51A Expired GB686814A (en) | 1950-07-26 | 1951-05-29 | Improvements in making gas-expanded organoplastics |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB686814A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1199985B (en) * | 1962-07-17 | 1965-09-02 | Chemischer Rohstoffe G M B H F | Foams made from polyester molding compounds |
| DE1245588B (en) * | 1956-08-23 | 1967-07-27 | Us Rubber Co | Process for the production of sponge rubber |
| DE1301473B (en) * | 1965-05-12 | 1969-08-21 | Takaji Funahasi | Process for the production of a porous rubber body |
-
1951
- 1951-05-29 GB GB12572/51A patent/GB686814A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1245588B (en) * | 1956-08-23 | 1967-07-27 | Us Rubber Co | Process for the production of sponge rubber |
| DE1199985B (en) * | 1962-07-17 | 1965-09-02 | Chemischer Rohstoffe G M B H F | Foams made from polyester molding compounds |
| DE1301473B (en) * | 1965-05-12 | 1969-08-21 | Takaji Funahasi | Process for the production of a porous rubber body |
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