GB1278167A - Process for the continous production of polyamide foams - Google Patents

Process for the continous production of polyamide foams

Info

Publication number
GB1278167A
GB1278167A GB1843570A GB1843570A GB1278167A GB 1278167 A GB1278167 A GB 1278167A GB 1843570 A GB1843570 A GB 1843570A GB 1843570 A GB1843570 A GB 1843570A GB 1278167 A GB1278167 A GB 1278167A
Authority
GB
United Kingdom
Prior art keywords
mixture
film
polyamide
foam
april
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
Application number
GB1843570A
Inventor
Kurt Schneider
Friedrich Fahnler
Walter Damksy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB1278167A publication Critical patent/GB1278167A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/28—Expanding the moulding material on continuous moving surfaces without restricting the upwards growth of the foam

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Polyamides (AREA)

Abstract

1278167 Polyamide foams FARBENFABRIKEN BAYER AG 17 April 1970 [19 April 1969] 18435/70 Heading C3C A polyamide foam is made continuously by applying an anionically polymerizable and foamable mixture of at least one lactam, catalyst, and activator which may also function as a blowing agent, to a moving supporting film, then heating the mixture on the film to the polymerization temperature to polymerize and foam the mixture and the polyamide formed is removed from the film. In the example a mixture of caprolactam, sodium borohydride, hexamethylene diisocyanate, and a silicone is polymerized and foamed on a film supplied by roller (4) on to conveyer belt (1) by means of heat supplied in cupboard (6); the foam is removed by (7) and may be shaped at (8) by sawing, cutting or planing.
GB1843570A 1969-04-19 1970-04-17 Process for the continous production of polyamide foams Expired GB1278167A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691920044 DE1920044A1 (en) 1969-04-19 1969-04-19 Process for the continuous production of polyamide foams

Publications (1)

Publication Number Publication Date
GB1278167A true GB1278167A (en) 1972-06-14

Family

ID=5731754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1843570A Expired GB1278167A (en) 1969-04-19 1970-04-17 Process for the continous production of polyamide foams

Country Status (6)

Country Link
BE (1) BE749126A (en)
CH (1) CH525925A (en)
DE (1) DE1920044A1 (en)
FR (1) FR2039303B1 (en)
GB (1) GB1278167A (en)
NL (1) NL7005609A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1301597A (en) * 1960-09-27 1962-08-17 Basf Ag Process for the production of foamed polyamides

Also Published As

Publication number Publication date
DE1920044A1 (en) 1970-10-29
CH525925A (en) 1972-07-31
FR2039303A1 (en) 1971-01-15
FR2039303B1 (en) 1974-08-09
BE749126A (en) 1970-10-01
NL7005609A (en) 1970-10-21

Similar Documents

Publication Publication Date Title
CA2123111A1 (en) Method and device for the continuous manufacture of slabstock polyurethane foam within a predetermined pressure range
ES454529A1 (en) Process for the production of new polysiloxane-polyoxyalkylene copolymers with reduced burning properties
ES422004A1 (en) Falling strand devolatilization technique
ATE42962T1 (en) PROCESS FOR MAKING CROSSLINKED CLOSED-CELL POLYOLEFIN FOAM PARTS.
FI99132B (en) Process for making crosslinked polymer foam
GB1278167A (en) Process for the continous production of polyamide foams
ES428991A1 (en) Process for producing moulded expanded urea formaldehyde products
ES474609A1 (en) Method and apparatus for the continuous production of foamed slabs.
ES451222A1 (en) Apparatus for the continuous production of continuous plastics foam webs
EP0255064A3 (en) Foamed organo-mineral products and process for their preparation
ES348338A1 (en) Process for the production of polyamide foams
GB1328957A (en) Process for the preparation of polyamide foam plastics
ES375296A1 (en) Process for the production of polyamide foam
US3702313A (en) Process for the production of polyamide foams
GB1363562A (en) Production of polyamide foam mouldings in injection-moulding apparatus
ES428476A1 (en) Process for the anionic polymerization of pyrrolidone
GB1337729A (en) Process for the continuous production of polymide foam sections
NO914413D0 (en) PROCEDURE FOR THE MANUFACTURE OF FOAM
JPS53146766A (en) Producing equipment of foams
GB1284146A (en) A process for the production of hollow articles of polyamide foams
GB1293833A (en) Process for the production of polyurethane moldings
JPS5221098A (en) Improved process for producing polyurethane foam
GB1267296A (en) A process for the production of moulded article of polyamide foam
GB1248325A (en) Process and apparatus for the expansion of expandable beads
BE805594A (en) Foamed sweet product, esp chocolate and nougat - using working pressure of 5-8 atmos and peripheral rotor velocity of 250-600 metres/min

Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414E Application relinquished (sect. 14/1949)
CSNS Application of which complete specification have been accepted and published, but patent is not sealed