GB1284146A - A process for the production of hollow articles of polyamide foams - Google Patents
A process for the production of hollow articles of polyamide foamsInfo
- Publication number
- GB1284146A GB1284146A GB1794770A GB1794770A GB1284146A GB 1284146 A GB1284146 A GB 1284146A GB 1794770 A GB1794770 A GB 1794770A GB 1794770 A GB1794770 A GB 1794770A GB 1284146 A GB1284146 A GB 1284146A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- hollow articles
- hollow
- articles
- caprolactam
- 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
-
- 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
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
Landscapes
- 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)
- Polyamides (AREA)
Abstract
1284146 Hollow polyamide foamed articles FARBENFABRIKEN BAYER AG 15 April 1970 [19 April 1969] 17947/70 Headings C3C and C3R Hollow articles of polyamide foam are made by foaming a molten anionically polymerizable and foamable mixture comprising one or more lactams, a basic catalyst and an activator, the mixture being fed into a heated mould which is rotatable about two mutually perpendicular axes, the speeds of rotation about the axes being such that the centrifugal force remains smaller than the gravitational force, the mixture being foamed and polymerized at 120-200‹ C. In the examples, mixtures of caprolactam, sodium formate or borohydride as catalyst, and hexamethylene-1,6-diisocyanate or adduct thereof with caprolactam as activator, together with a silicone stabilizer and aluminium powder as nucleating agent were fed into heated rotatory casting moulds (in the form of a truncated cone) which were rotated about two mutually perpendicular axes, to form closed, hollow articles.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691920040 DE1920040A1 (en) | 1969-04-19 | 1969-04-19 | Process for the production of hollow bodies from polyamide foams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1284146A true GB1284146A (en) | 1972-08-02 |
Family
ID=5731751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1794770A Expired GB1284146A (en) | 1969-04-19 | 1970-04-15 | A process for the production of hollow articles of polyamide foams |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE749123A (en) |
| CA (1) | CA935615A (en) |
| CH (1) | CH529188A (en) |
| DE (1) | DE1920040A1 (en) |
| FR (1) | FR2039301B1 (en) |
| GB (1) | GB1284146A (en) |
| NL (1) | NL7005606A (en) |
-
1969
- 1969-04-19 DE DE19691920040 patent/DE1920040A1/en active Pending
-
1970
- 1970-04-07 CH CH511370A patent/CH529188A/en not_active IP Right Cessation
- 1970-04-15 GB GB1794770A patent/GB1284146A/en not_active Expired
- 1970-04-17 BE BE749123D patent/BE749123A/en unknown
- 1970-04-17 FR FR7014034A patent/FR2039301B1/fr not_active Expired
- 1970-04-17 NL NL7005606A patent/NL7005606A/xx unknown
- 1970-04-17 CA CA080372A patent/CA935615A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2039301B1 (en) | 1974-09-06 |
| NL7005606A (en) | 1970-10-21 |
| CH529188A (en) | 1972-10-15 |
| BE749123A (en) | 1970-10-01 |
| CA935615A (en) | 1973-10-23 |
| DE1920040A1 (en) | 1970-10-22 |
| FR2039301A1 (en) | 1971-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |