ES2153661T3 - Adicion de amina para mejorar paraformaldehido. - Google Patents

Adicion de amina para mejorar paraformaldehido.

Info

Publication number
ES2153661T3
ES2153661T3 ES97916084T ES97916084T ES2153661T3 ES 2153661 T3 ES2153661 T3 ES 2153661T3 ES 97916084 T ES97916084 T ES 97916084T ES 97916084 T ES97916084 T ES 97916084T ES 2153661 T3 ES2153661 T3 ES 2153661T3
Authority
ES
Spain
Prior art keywords
amina
additive
loss
formaldehyde
parformaldehyde
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 - Lifetime
Application number
ES97916084T
Other languages
English (en)
Inventor
Hung-Cheun Cheung
Carolyn Supplee
George C Seaman
H Robert Gerberich
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.)
Celanese International Corp
Original Assignee
Celanese International 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
Application filed by Celanese International Corp filed Critical Celanese International Corp
Application granted granted Critical
Publication of ES2153661T3 publication Critical patent/ES2153661T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00—Ethers; Compounds having groups, groups or groups
    • C07C43/30—Compounds having groups
    • 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
    • C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
    • C08G2/08—Polymerisation of formaldehyde

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

LA PRESENTE INVENCION SE REFIERE A UN PROCEDIMIENTO DE PRODUCCION DE GRANULOS DE FORMALDEHIDO CON UN TIEMPO DE DISOLUCION CORTO Y BAJA CONCENTRACION DE FORMACIONES INSOLUBLES. SE CREE QUE LOS PRODUCTOS INSOLUBLES PRODUCEN PEGAJOSIDAD, INCREMENTO DE LA VISCOSIDAD Y PERDIDA DE FLUIDEZ DEL PRODUCTO, PERDIDA DE MANEJABILIDAD Y QUE DAN LUGAR A PROBLEMAS DE ALMACENAMIENTO DEL PRODUCTO GRANULADO FINAL. PARA EVITAR ESTE PROBLEMA, SE PREPARA UNA DISOLUCION CONCENTRADA DE FORMALDEHIDO, CON UNA PUREZA QUE OSCILA ENTRE EL 37 Y EL 99 % Y PUEDE ESTAR MEZCLADA CON UN ADITIVO DE AMINA, UN ADITIVO DE ALCOHOL Y AMINA, O UN ADITIVO DE AMINA, ALCOHOL Y SOSA CAUSTICA. ALTERNATIVAMENTE, EL GRANULO FINAL SE PUEDE ROCIAR CON UN ESTABILIZADOR DE AMINA O DE UNA MEZCLA DE AMINAS.
ES97916084T 1996-03-20 1997-03-19 Adicion de amina para mejorar paraformaldehido. Expired - Lifetime ES2153661T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1376696P 1996-03-20 1996-03-20

Publications (1)

Publication Number Publication Date
ES2153661T3 true ES2153661T3 (es) 2001-03-01

Family

ID=21761641

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97916084T Expired - Lifetime ES2153661T3 (es) 1996-03-20 1997-03-19 Adicion de amina para mejorar paraformaldehido.

Country Status (7)

Country Link
US (1) US5898087A (es)
EP (1) EP0865454B1 (es)
AU (1) AU2335097A (es)
CA (1) CA2247044C (es)
DE (1) DE69703832T2 (es)
ES (1) ES2153661T3 (es)
WO (1) WO1997034941A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002045125A1 (en) * 2000-12-01 2002-06-06 Yeda Research And Development Co. Ltd. Device and method for the examination of samples in a non-vacuum environment using a scanning electron microscope
US9587073B2 (en) * 2014-07-24 2017-03-07 International Business Machines Corporation Thermoplastic toughening of PHT's
KR20210077696A (ko) 2018-09-28 2021-06-25 셀라니즈 인터내셔날 코포레이션 파라포름알데히드용 암모니아 및 수산화 암모늄 안정화제
CN117143303A (zh) * 2023-06-12 2023-12-01 安徽瑞柏新材料有限公司 一种多聚甲醛的生产工艺方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519981A (en) * 1947-03-29 1950-08-22 Paramount Textile Mach Co Hosiery finishing machine
US2481981A (en) * 1948-06-23 1949-09-13 Du Pont Stable high reactivity paraformaldehyde
US2519550A (en) * 1948-11-08 1950-08-22 Du Pont Formaldehyde polymers
US2568016A (en) * 1949-03-12 1951-09-18 Celanese Corp Formaldehyde conversion
US2568018A (en) * 1949-10-28 1951-09-18 Celanese Corp Treatment of paraformaldehyde
US2704765A (en) * 1949-11-18 1955-03-22 Celanese Corp Formaldehyde polymers
US2823237A (en) * 1954-05-18 1958-02-11 Pan American Petroleum Corp Preparation of highly soluble paraformaldehyde
GB869764A (en) * 1958-07-26 1961-06-07 Sumitomo Chemical Co Process for rectifying a formaldehyde-containing solution
DE1112505B (de) * 1958-09-27 1961-08-10 Degussa Verfahren zur Herstellung von Paraformaldehyd mit mittlerer Reaktionsfaehigkeit und einem Wassergehalt von hoechstens 0, 2 Gewichtsprozent
GB931892A (en) * 1961-03-14 1963-07-24 Ici Ltd Stabilisation of formaldehyde
ES290018A1 (es) * 1962-07-17 1963-12-01 Montedison Spa Un procedimiento para preparar paraformaldehido
GB1028804A (en) * 1962-07-17 1966-05-11 Montedison Spa Paraformaldehyde
FR1486060A (fr) * 1966-07-06 1967-06-23 Leuna Werke Veb Procédé pour la fabrication de paraformol solide, ainsi que les produits conformesà ceux obtenus par le présent procédé ou procédé similaire
FR1553161A (es) * 1967-07-17 1969-01-10
FR1547172A (fr) * 1967-07-17 1968-11-22 Sir Soc Italiana Resine Spa Procédé de production du paraformaldéhyde
JPS54122214A (en) * 1978-03-14 1979-09-21 Mitsubishi Gas Chem Co Inc Preparation of paraformaldehyde
US4550213A (en) * 1984-06-29 1985-10-29 Celanese Corporation Method of manufacture for paraformaldehyde prills
ES2087041B1 (es) * 1994-12-09 1997-03-16 Patentes Novedades Sa Procedimiento para la preparacion de paraformaldehido.

Also Published As

Publication number Publication date
EP0865454A1 (en) 1998-09-23
DE69703832T2 (de) 2001-04-26
AU2335097A (en) 1997-10-10
CA2247044C (en) 2004-10-19
CA2247044A1 (en) 1997-09-25
DE69703832D1 (de) 2001-02-08
EP0865454B1 (en) 2001-01-03
US5898087A (en) 1999-04-27
WO1997034941A1 (en) 1997-09-25

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