GB1108503A - Method of and apparatus for the production of expanded aminoplasts and modification of the cellular structure thereof - Google Patents

Method of and apparatus for the production of expanded aminoplasts and modification of the cellular structure thereof

Info

Publication number
GB1108503A
GB1108503A GB686765A GB686765A GB1108503A GB 1108503 A GB1108503 A GB 1108503A GB 686765 A GB686765 A GB 686765A GB 686765 A GB686765 A GB 686765A GB 1108503 A GB1108503 A GB 1108503A
Authority
GB
United Kingdom
Prior art keywords
foamed
aminoplast resin
produced
resin
soluble
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
GB686765A
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.)
Individual
Original Assignee
Individual
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 claimed from NL6401740A external-priority patent/NL141561B/en
Priority claimed from NL6501667A external-priority patent/NL144968B/en
Application filed by Individual filed Critical Individual
Publication of GB1108503A publication Critical patent/GB1108503A/en
Expired legal-status Critical Current

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
    • 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
    • B29B7/7419—Mixing devices specially adapted for foamable substances with supply of gas with static or injector mixer elements
    • 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
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • 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
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen

Abstract

Foamed aminoplasts are produced and have their cellular structure modified by mixing a foamed-up foaming agent, a water-soluble aminoplast resin and a hardening agent and, during or after the admixing of the reaction components leading to the hardening of the foamed aminoplast resing produced and shortly bedore injection moulding or extrusion, adding continuously a dry mixture of gas, particularly air, and at least one pulverulent additive to the foamed aminoplast resin being produced while the latter is in a shaped but not fully hardened condition. The aminoplasts are the water-soluble resins obtained by condensation of urea and/or thiourea with formaldehyde in the presence of catalysts and at an elevated temperature. The foamed-up foaming agent is any foaming agent in solution or dispersion which has been foamed, e.g. by beating up or stirring. Suitable additives are surface-active grease-free soot, dry resin, glue, aminoplast resin precondensate powder which has been ground to micro-fineness and which optionally has been modified with organic or inorganic substances, particularly substances having hydraulic setting action, furfural-modified aminoplast resin, foamed polystyrene in pellet form or foamed polystyrene waste, water-soluble polyester and/or phenol resin and/or acrylic resin mixed with a water-soluble aminoplast resin, and a water-soluble, air-dry polyester resin, optionally in admixture with styrene and/or polyhydric alcohol and/or an oxidation agent and/or a reducing agent. Compressed gas may be added shortly before moulding or extrusion. The mixtures of gas and pulverulent additive may produce gas with the other components. In examples are used an aqueous urea-formaldehyde precondensate modified with furfural, solution of phenol-formaldehyde resin in stage A, asbestos flour, silicic acid-impregnated wood flour, aqueous ortho-phosphorioc acid, a styrene solution of a polyester, an aqueous dispersion of bitumen, aqueous solution of lauryl alkanol sulphate, aluminium sulphate, calcium carbonate, aluminium chloride, gum arabic, aqueous oxalic acid solution, gypsum powder, grease-free soot and sodium silicate solution.ALSO:Nitrogenous or mixed fertilizers and trace elements are incorporated into foamed aminoplasts which are produced and have their cellular structure modified by mixing a foamed up foaming agent, a water soluble aminoplast resin and a hardening agent and during or after the admixing of the reaction components leading to the hardening of the foamed aminoplast resin produced and shortly before injection moulding or extrusion, adding a dry mixture of gas and at least one pulverulent additive, containing the fertilizers, continuously to the foamed aminoplast resin being produced, while the latter is in a shaped but not fully hardened condition. Suitable fertilizers are crotonylidene-diurea or urea compounds with paraformaldehyde and acetaldehyde, casein, leather flour, chlorides, sulphates, phosphates, nitrates, aminoplast resin, and cellulose. Seeds and bulbs may be incorporated into the foam.ALSO:Disinfectants, bactericidal agents and poisons are incorporated into foamed aminoplasts which are produced and have their cellular structures modified by mixing a foamed-up foaming agent, a water soluble aminoplast resin and a hardening agent and, during or after the admixing of the reaction components leading to the hardening of the foamed aminoplast resin produced and shortly before injection moulding or extrusion, adding a dry mixture of gas and at least pulverulent additive containing the disinfectants &c., continuously to the foamed aminoplast resin being produced, while the latter is in a shaped but not fully hardened condition. Suitable disinfectants are resorcinol, calcium chloride, potassium hydroxide, 1, 1, 1-trichloro-2, 2-bis-(p-chlorophenyl)-ethane, soda-lime and formaldehyde.
GB686765A 1964-02-24 1965-02-17 Method of and apparatus for the production of expanded aminoplasts and modification of the cellular structure thereof Expired GB1108503A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6401740A NL141561B (en) 1964-02-24 1964-02-24 PROCESS FOR PREPARING AN AMINOPLAST FOAM WITH A REINFORCED CELL STRUCTURE AND DEVICE FOR PERFORMING THIS PROCESS.
NL6501667A NL144968B (en) 1965-02-10 1965-02-10 IMPROVEMENT OF THE PROCESS FOR PREPARING AN AMINOPLAST FOAM WITH A REINFORCED CELL STRUCTURE ACCORDING TO MAIN PATENT NO. 141561.

Publications (1)

Publication Number Publication Date
GB1108503A true GB1108503A (en) 1968-04-03

Family

ID=26643723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB686765A Expired GB1108503A (en) 1964-02-24 1965-02-17 Method of and apparatus for the production of expanded aminoplasts and modification of the cellular structure thereof

Country Status (8)

Country Link
BE (1) BE660198A (en)
CH (1) CH505173A (en)
DE (1) DE1569550C3 (en)
ES (1) ES310089A1 (en)
FI (1) FI44956C (en)
GB (1) GB1108503A (en)
LU (1) LU48020A1 (en)
SE (2) SE306829B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8143335B2 (en) 2003-03-28 2012-03-27 Momentive Specialty Chemicals Inc. Adhesive composition

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2752311C3 (en) * 1977-11-23 1982-05-13 Irkutskij gosudarstvennyj naučno-issledovatel'skij institut redkich i cvetnych metallov (IRGIREDMET), Irkutsk Process for the production of foam and device for carrying out the process
NL2008628C2 (en) * 2012-04-11 2013-10-15 Fasd Bw Beheer B V FOAM HEAD WITH SEVERAL FLOW OUTLETS AND DEVICE AND METHOD FOR APPLYING SPRAY LAYER TO A SURFACE PROVIDED WITH SUCH A FOAM LEVEL FOR USE IN SUCH DEVICE AND METHOD.
ES2831601T3 (en) * 2012-04-11 2021-06-09 Fasd Bw Beheer B V Device provided with a flow resistant check valve and procedure for applying a coating to a surface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8143335B2 (en) 2003-03-28 2012-03-27 Momentive Specialty Chemicals Inc. Adhesive composition

Also Published As

Publication number Publication date
SE317815B (en) 1969-11-24
LU48020A1 (en) 1965-04-20
ES310089A1 (en) 1966-02-16
BE660198A (en) 1965-06-16
FI44956B (en) 1971-11-01
FI44956C (en) 1972-02-10
DE1569550C3 (en) 1978-10-05
CH505173A (en) 1971-03-31
DE1569550A1 (en) 1970-10-15
DE1569550B2 (en) 1974-12-12
SE306829B (en) 1968-12-09

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