ES8305798A1 - "procedimiento para la preparacion de resinas urea-formaldehido para obtener espumas solidas con baja emision de formaldehido". - Google Patents

"procedimiento para la preparacion de resinas urea-formaldehido para obtener espumas solidas con baja emision de formaldehido".

Info

Publication number
ES8305798A1
ES8305798A1 ES512239A ES512239A ES8305798A1 ES 8305798 A1 ES8305798 A1 ES 8305798A1 ES 512239 A ES512239 A ES 512239A ES 512239 A ES512239 A ES 512239A ES 8305798 A1 ES8305798 A1 ES 8305798A1
Authority
ES
Spain
Prior art keywords
formaldehyde
preparation
foams based
urea
low
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
ES512239A
Other languages
English (en)
Other versions
ES512239A0 (es
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.)
Montedison SpA
Original Assignee
Montedison SpA
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 Montedison SpA filed Critical Montedison SpA
Publication of ES8305798A1 publication Critical patent/ES8305798A1/es
Publication of ES512239A0 publication Critical patent/ES512239A0/es
Granted 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
    • C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
    • C08G12/12—Ureas; Thioureas
    • 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
    • C08J2361/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08J2361/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PROCEDIMIENTO PARA LA PREPARACION DE RESINAS UREA-FORMALDEHIDO PARA OBTENER ESPUMAS SOLIDAS CON BAJA EMISION DE FORMALDEHIDO. SE MEZCLAN ENTRE SI EL FORMALDEHIDO CON AGUA Y UREA EN UNA RELACION TAL QUE SE OBTENGA UNA RELACION MOLAR UREA-FORMALDEHIDO DE 2,2 A 1,7 A UN PH DE 6,3 A 6,8. SE MEZCLA HEXAMETILENTETRAMINA EN CANTIDADES COMPRENDIDAS ENTRE 2 Y 15% EN PESO SOBRE EL PRODUCTO FINAL SECO, A UNA TEMPERATURA DE 40-80 C Y A UN PH DE 8,5-10,0. SE CALIENTA A 90-95 C, AÑADIENDOSE UN CATALIZADOR ACIDO Y SE CONDENSA A 90-120 C A UN PH DE 4,0-6,0 HASTA OBTENER UNA VISCOSIDAD DE 50-120 CP. SE NEUTRALIZA CON HIDROXIDO SODICO HASTA UN PH DE 6,0-7,0 Y SE MEZCLA UREA HASTA UNA RELACION MOLAR FORMALDEHIDO-UREA DE 1,2-1,4, CONDENSANDOSE A 85-95 C HASTA OBTENER UNA VISCOSIDAD DE 80-120 CP. SE NEUTRALIZA NUEVAMENTE CON HIDROXIDO SODICO HASTA ALCANZAR UN PH DE 7,5-9,0 Y SE ENFRIA HASTA 25-30 C. POR ULTIMO SE SECA OPCIONALMENTE PARA OBTENER UN PRODUCTO EN POLVO. SE UTILIZAN COMO AISLAMIENTO TERMICO, LLENANDOSE ESPACIOS HUECOS DE PAREDES CON CAVIDADES.
ES512239A 1981-05-15 1982-05-14 "procedimiento para la preparacion de resinas urea-formaldehido para obtener espumas solidas con baja emision de formaldehido". Granted ES512239A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT21725/81A IT1136596B (it) 1981-05-15 1981-05-15 Schiume a base di resina urea-formaldeide a bassa emissione di formaldeide e procedimento per la loro applicazione

Publications (2)

Publication Number Publication Date
ES8305798A1 true ES8305798A1 (es) 1983-05-01
ES512239A0 ES512239A0 (es) 1983-05-01

Family

ID=11185973

Family Applications (1)

Application Number Title Priority Date Filing Date
ES512239A Granted ES512239A0 (es) 1981-05-15 1982-05-14 "procedimiento para la preparacion de resinas urea-formaldehido para obtener espumas solidas con baja emision de formaldehido".

Country Status (11)

Country Link
US (1) US4467054A (es)
EP (1) EP0066125B1 (es)
CA (1) CA1178750A (es)
DE (1) DE3265047D1 (es)
ES (1) ES512239A0 (es)
HR (1) HRP940799B1 (es)
IT (1) IT1136596B (es)
PT (1) PT74900B (es)
RO (1) RO86120B (es)
SI (1) SI8211010A8 (es)
YU (1) YU42765B (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625183A (zh) * 2018-06-04 2018-10-09 安徽恒益纺织科技有限公司 一种用于化纤面料免烫整理剂的制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2168981A (en) * 1936-08-06 1939-08-08 Catalin Corp Of America Phenolic resin molding composition
US2323831A (en) * 1938-01-21 1943-07-06 Menger Adolf Process of adhesion
US2625524A (en) * 1951-12-26 1953-01-13 Du Pont Viscous urea-formaldehyde compositions and method for preparing the same
US2789095A (en) * 1952-11-22 1957-04-16 Du Pont Process for preparing urea-formaldehyde solid foam
FR1106171A (fr) * 1953-08-19 1955-12-13 Degussa Procédé pour préparer des produits de condensation de l'urée et d'aldéhydes
GB1470953A (en) * 1973-01-26 1977-04-21 Ici Ltd Thermal insulation in wall cavities
US3979341A (en) * 1974-05-28 1976-09-07 Borden Products Limited Urea formaldehyde foam
US3996190A (en) * 1975-09-15 1976-12-07 Allied Chemical Corporation Formaldehyde fume abatement in the production of urea/formaldehyde molding resins
US4092277A (en) * 1977-01-21 1978-05-30 Waverly Chemical Co. Method for producing chemically stable urea-formaldehyde foams
US4225680A (en) * 1979-08-06 1980-09-30 Borden, Inc. Urea formaldehyde foam with low shrinkage

Also Published As

Publication number Publication date
DE3265047D1 (en) 1985-09-05
RO86120B (ro) 1985-05-04
IT8121725A0 (it) 1981-05-15
SI8211010A8 (en) 1995-04-30
EP0066125B1 (en) 1985-07-31
IT1136596B (it) 1986-09-03
HRP940799B1 (en) 1996-04-30
YU42765B (en) 1988-12-31
US4467054A (en) 1984-08-21
PT74900B (en) 1983-12-07
RO86120A (ro) 1985-04-17
EP0066125A1 (en) 1982-12-08
YU101082A (en) 1985-04-30
ES512239A0 (es) 1983-05-01
CA1178750A (en) 1984-11-27
PT74900A (en) 1982-06-01

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20030212