GB994479A - Method and apparatus for producing urethane foams - Google Patents

Method and apparatus for producing urethane foams

Info

Publication number
GB994479A
GB994479A GB10768/62A GB1076862A GB994479A GB 994479 A GB994479 A GB 994479A GB 10768/62 A GB10768/62 A GB 10768/62A GB 1076862 A GB1076862 A GB 1076862A GB 994479 A GB994479 A GB 994479A
Authority
GB
United Kingdom
Prior art keywords
blowing agent
materials
polyisocyanate
premixture
urethane foam
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
GB10768/62A
Inventor
Burrnell Edward Brown
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.)
Day International Corp
Original Assignee
Dayco Corp
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
Priority to NL276725D priority Critical patent/NL276725A/xx
Application filed by Dayco Corp filed Critical Dayco Corp
Priority to GB10768/62A priority patent/GB994479A/en
Priority to FR892425A priority patent/FR1318387A/en
Publication of GB994479A publication Critical patent/GB994479A/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
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
    • B29C44/424—Details of machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7404—Mixing devices specially adapted for foamable substances
    • B29B7/7409—Mixing devices specially adapted for foamable substances with supply of gas
    • B29B7/7428—Methodical aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7485—Systems, i.e. flow charts or diagrams; Plants with consecutive mixers, e.g. with premixing some of the components

Abstract

A method of forming a one-shot urethane foam from a polyol resin material and a polyisocyanate material in which one of the materials is premixed with one or more catalysts and a blowing agent, for instance, a volatilizable liquid blowing agent to form a pre-mixture, and the premixture is introduced into a mixing chamber together with the other one of the materials resulting in the formation of a reaction mixture which is then dispensed into a container for completion of the reaction between the polyol and the polyisocyanate to form a porous urethane foam, is characterized in that the premixing of the one material with the catalyst and the blowing agent and the mixing of the thus obtained premixture with the other one of the materials is effected at a pressure which lies above atmospheric pressure and below about 150 p.s.i.g. An apparatus for carrying out the method is described. Suitable resin polyols are polyethers and polyester diols and triols of M.W. 300 to 4500. Triethylamine, triethylene diamine, N-ethyl- or methyl-morpholine, stannous octoate, stannous oleate and dibutyltin diacetate, di-(2-ethyl hexoate) and dilaurate are suitable catalysts. With stannic valence tin compounds dextrorotatory tartaric acid is preferably used to prevent degradation of the foam.
GB10768/62A 1962-03-21 1962-03-21 Method and apparatus for producing urethane foams Expired GB994479A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL276725D NL276725A (en) 1962-03-21
GB10768/62A GB994479A (en) 1962-03-21 1962-03-21 Method and apparatus for producing urethane foams
FR892425A FR1318387A (en) 1962-03-21 1962-03-27 Method and device for forming urethane foam

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB10768/62A GB994479A (en) 1962-03-21 1962-03-21 Method and apparatus for producing urethane foams
FR892425A FR1318387A (en) 1962-03-21 1962-03-27 Method and device for forming urethane foam

Publications (1)

Publication Number Publication Date
GB994479A true GB994479A (en) 1965-06-10

Family

ID=26194955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10768/62A Expired GB994479A (en) 1962-03-21 1962-03-21 Method and apparatus for producing urethane foams

Country Status (2)

Country Link
FR (1) FR1318387A (en)
GB (1) GB994479A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257150A (en) * 1991-07-04 1993-01-06 Hennecke Gmbh Maschf A process for the production of elastomeric polyurethanes, particularly in the form of shoe soles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257150A (en) * 1991-07-04 1993-01-06 Hennecke Gmbh Maschf A process for the production of elastomeric polyurethanes, particularly in the form of shoe soles
GB2257150B (en) * 1991-07-04 1995-02-08 Hennecke Gmbh Maschf A process for the production of elastomeric polyurethanes, more particularly in the form of shoe soles

Also Published As

Publication number Publication date
FR1318387A (en) 1963-02-15

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