GB1466427A - Process for expanding thermoplastic polymers - Google Patents
Process for expanding thermoplastic polymersInfo
- Publication number
- GB1466427A GB1466427A GB1476374A GB1476374A GB1466427A GB 1466427 A GB1466427 A GB 1466427A GB 1476374 A GB1476374 A GB 1476374A GB 1476374 A GB1476374 A GB 1476374A GB 1466427 A GB1466427 A GB 1466427A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbonate
- polymer
- blowing agent
- zinc
- talc
- 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
- C08J9/08—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 carbon dioxide
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
1466427 Metal carbonate blowing agents FISONS Ltd 2 April 1975 [3 April 1974] 14763/74 Heading C3C Blowing agents, which are used to expand thermoplastic polymers, comprise as primary blowing agent (i.e. provides at least 50% by volume of the gas evolved on heating) a carbonate of zinc, lead, cadmium and/or lithium, with the proviso that where lead carbonate is used there is less than 2% by wt. of strong acid present in the composition and where lithium carbonate is used the polymer is not a polyamide, polymethyl methacrylate, polyvinyl chloride or an acrylonitrile/butadiene/styrene copolymer. Polymers are expanded by heating a composition containing the above blowing agent, e.g. to a temperature between 200 C. and the degradation temperature of the polymer and above the in situ decomposition temperature of the blowing agent and above the softening point of the polymer; the composition may be free from strong acid and contain a nucleating agent, e.g. a pigment, filler, magnesium or aluminium silicate, a clay, fumed oxide, silica or magnesium oxide. The polymer may be a polycarbonate, polyphenylene sulphide, polysulphone, polyamide, polyester or a styrene polymer. In the examples blowing agents consisting of basic zinc carbonate talc, and optionally palmitic, lauric, stearic or trimesic acids; zinc carbonate and optionally talc and lauric acid; basic cadmium carbonate (CdCO 3 .2CdO.3H 2 O) and talc; or zinc and potassium carbonate were used to expand a polycarbonate, acrylonitrile/butadiene/styrene copolymer, asbestos or glass fibre reinforced polypropylene, nylon 6, polystyrene, polypropylene, polyethylene, modified polyphenylene oxide or polyethersulphone, by feeding the mixtures into injection moulding machines. In an Example (11) the blowing agent was mixed with polyethylene and formed into pellets which were then used as the blowing agent.
Priority Applications (18)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1476374A GB1466427A (en) | 1974-04-03 | 1974-04-03 | Process for expanding thermoplastic polymers |
AR258223A AR207773A1 (en) | 1974-04-03 | 1975-01-01 | PROCEDURE TO EXPAND A THERMOPLASTIC POLYMER AND USEFUL COMPOSITION IN SUCH PROCEDURE |
ZA00751491A ZA751491B (en) | 1974-04-03 | 1975-03-11 | Process for blowing polymer formulations and compositions for use therein |
IE540/75A IE41220B1 (en) | 1974-04-03 | 1975-03-12 | Process for expanding thermoplastic polymers |
NO750830A NO750830L (en) | 1974-04-03 | 1975-03-12 | |
AU79229/75A AU7922975A (en) | 1974-04-03 | 1975-03-18 | Composition |
BE154676A BE827088A (en) | 1974-04-03 | 1975-03-24 | EXPANSION PROCESS AND EXPANDABLE COMPOSITION |
NL7503471A NL7503471A (en) | 1974-04-03 | 1975-03-24 | PROCESS FOR EXPANDING THERMOPLASTIC POLYMERS. |
DE19752513033 DE2513033A1 (en) | 1974-04-03 | 1975-03-25 | METHOD OF EXPANDING THERMOPLASTIC POLYMERS |
ES436232A ES436232A1 (en) | 1974-04-03 | 1975-04-02 | Process for expanding thermoplastic polymers |
CH416175A CH609996A5 (en) | 1974-04-03 | 1975-04-02 | Process for expanding thermoplastic polymers |
FR7510329A FR2266718B1 (en) | 1974-04-03 | 1975-04-02 | |
SE7503788A SE7503788L (en) | 1974-04-03 | 1975-04-02 | PROCEDURE FOR EXPANSION OF THERMOPLASTIC MATERIAL AND COMPOSITION FOR THE IMPLEMENTATION OF THE PROCEDURE. |
DK140975A DK140975A (en) | 1974-04-03 | 1975-04-02 | |
JP50039857A JPS50140575A (en) | 1974-04-03 | 1975-04-03 | |
CA000223820A CA1184000A (en) | 1974-04-03 | 1975-04-03 | Expandable thermoplastic polymer composition containing thermally decomposable carbonates |
IT7521963A IT1034815B (en) | 1974-04-03 | 1975-04-03 | PROCEDURE FOR EXPANDING WITH CARBONATES IN PARTICULAR DIZINC THERMOPLASTIC POLYMERS AND EXPANDABLE COMPOSITION SUITABLE TO ALLOW THEIR EXPANSION |
US05/870,930 US4183822A (en) | 1974-04-03 | 1978-01-18 | Blowing agent composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1476374A GB1466427A (en) | 1974-04-03 | 1974-04-03 | Process for expanding thermoplastic polymers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1466427A true GB1466427A (en) | 1977-03-09 |
Family
ID=10047062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1476374A Expired GB1466427A (en) | 1974-04-03 | 1974-04-03 | Process for expanding thermoplastic polymers |
Country Status (17)
Country | Link |
---|---|
JP (1) | JPS50140575A (en) |
AR (1) | AR207773A1 (en) |
AU (1) | AU7922975A (en) |
BE (1) | BE827088A (en) |
CA (1) | CA1184000A (en) |
CH (1) | CH609996A5 (en) |
DE (1) | DE2513033A1 (en) |
DK (1) | DK140975A (en) |
ES (1) | ES436232A1 (en) |
FR (1) | FR2266718B1 (en) |
GB (1) | GB1466427A (en) |
IE (1) | IE41220B1 (en) |
IT (1) | IT1034815B (en) |
NL (1) | NL7503471A (en) |
NO (1) | NO750830L (en) |
SE (1) | SE7503788L (en) |
ZA (1) | ZA751491B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4711921A (en) * | 1982-11-12 | 1987-12-08 | The B. F. Goodrich Company | Stabilization of vinyl chloride polymers |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1100697A (en) * | 1976-12-22 | 1981-05-05 | General Electric Company | Foamable thermoplastic polyester compositions |
JPS6045656B2 (en) * | 1979-06-29 | 1985-10-11 | 三井東圧化学株式会社 | Foamable thermoplastic resin composition |
DE102009050807A1 (en) * | 2009-10-27 | 2011-06-30 | Bayerische Motoren Werke Aktiengesellschaft, 80809 | Injection molding tool has tool lower part and tool upper part displaceable in process direction, and affecting or sealing surfaces |
JP2019189830A (en) * | 2018-04-27 | 2019-10-31 | 日立化成テクノサービス株式会社 | Polycarbonate extrusion chemical foam and method for producing the same |
-
1974
- 1974-04-03 GB GB1476374A patent/GB1466427A/en not_active Expired
-
1975
- 1975-01-01 AR AR258223A patent/AR207773A1/en active
- 1975-03-11 ZA ZA00751491A patent/ZA751491B/en unknown
- 1975-03-12 IE IE540/75A patent/IE41220B1/en unknown
- 1975-03-12 NO NO750830A patent/NO750830L/no unknown
- 1975-03-18 AU AU79229/75A patent/AU7922975A/en not_active Expired
- 1975-03-24 NL NL7503471A patent/NL7503471A/en not_active Application Discontinuation
- 1975-03-24 BE BE154676A patent/BE827088A/en unknown
- 1975-03-25 DE DE19752513033 patent/DE2513033A1/en not_active Withdrawn
- 1975-04-02 SE SE7503788A patent/SE7503788L/en unknown
- 1975-04-02 ES ES436232A patent/ES436232A1/en not_active Expired
- 1975-04-02 FR FR7510329A patent/FR2266718B1/fr not_active Expired
- 1975-04-02 CH CH416175A patent/CH609996A5/en not_active IP Right Cessation
- 1975-04-02 DK DK140975A patent/DK140975A/da not_active Application Discontinuation
- 1975-04-03 IT IT7521963A patent/IT1034815B/en active
- 1975-04-03 JP JP50039857A patent/JPS50140575A/ja active Pending
- 1975-04-03 CA CA000223820A patent/CA1184000A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4711921A (en) * | 1982-11-12 | 1987-12-08 | The B. F. Goodrich Company | Stabilization of vinyl chloride polymers |
Also Published As
Publication number | Publication date |
---|---|
JPS50140575A (en) | 1975-11-11 |
IE41220L (en) | 1975-10-03 |
IT1034815B (en) | 1979-10-10 |
ES436232A1 (en) | 1977-08-01 |
FR2266718B1 (en) | 1979-01-12 |
NO750830L (en) | 1975-10-06 |
AR207773A1 (en) | 1976-10-29 |
BE827088A (en) | 1975-09-24 |
DE2513033A1 (en) | 1975-10-16 |
NL7503471A (en) | 1975-10-07 |
ZA751491B (en) | 1976-06-30 |
CA1184000A (en) | 1985-03-12 |
IE41220B1 (en) | 1979-11-07 |
DK140975A (en) | 1975-10-04 |
SE7503788L (en) | 1975-10-06 |
FR2266718A1 (en) | 1975-10-31 |
AU7922975A (en) | 1976-09-23 |
CH609996A5 (en) | 1979-03-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
429A | Application made for amendment of specification (sect. 29/1949) | ||
429H | Application (made) for amendment of specification now open to opposition (sect. 29/1949) | ||
429D | Case decided by the comptroller ** specification amended (sect. 29/1949) | ||
SPA | Amended specification published | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |