ES383547A2 - Procedure for the preparation of solid materials based on reticulated products of urea polycondensation and formaldehyde. (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure for the preparation of solid materials based on reticulated products of urea polycondensation and formaldehyde. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES383547A2
ES383547A2 ES383547A ES383547A ES383547A2 ES 383547 A2 ES383547 A2 ES 383547A2 ES 383547 A ES383547 A ES 383547A ES 383547 A ES383547 A ES 383547A ES 383547 A2 ES383547 A2 ES 383547A2
Authority
ES
Spain
Prior art keywords
formaldehyde
urea
preparation
solid materials
translation
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
ES383547A
Other languages
Spanish (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.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba 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
Priority claimed from CH1382969A external-priority patent/CH533143A/en
Application filed by Ciba Geigy AG, Ciba AG filed Critical Ciba Geigy AG
Publication of ES383547A2 publication Critical patent/ES383547A2/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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • 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)
  • Phenolic Resins Or Amino Resins (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Improvements in the object of the main patent no. 365,005, for "Procedure for the preparation of solid materials based on crosslinked polycondensation products of urea and formaldehyde" especially for the preparation of widely dispersed solid materials, consisting of primary particles of medium diameter not exceeding 1 micron, based on crosslinked polycondensation products of urea and formaldehyde, characterized by converting the aqueous solution of a urea and formaldehyde precondensate into a crosslinked gel, in the absence of protective colloid and by the addition of sulfaminic acid or a water soluble ammonium hydrosulfate of the formula R-Nh3 ⊕ SO4H ⊖ in which R stands for a hydrogen atom or an organic radical that does not impair the solubility in water (such as, in particular, an alkyl, cycloalkyl, hydroxyalkyl, aralkyl or aryl radical), using a formaldehyde: urea molar ratio which at the latest in the moment of gel formation does not exceed 1.2, and because the gel obtained is crumbled, dried and deagglomerated. (Machine-translation by Google Translate, not legally binding)
ES383547A 1969-09-12 1970-09-11 Procedure for the preparation of solid materials based on reticulated products of urea polycondensation and formaldehyde. (Machine-translation by Google Translate, not legally binding) Expired ES383547A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1382969A CH533143A (en) 1968-03-21 1969-09-12 Highly disperse crosslinked ureaformaldeh

Publications (1)

Publication Number Publication Date
ES383547A2 true ES383547A2 (en) 1973-01-01

Family

ID=4395683

Family Applications (1)

Application Number Title Priority Date Filing Date
ES383547A Expired ES383547A2 (en) 1969-09-12 1970-09-11 Procedure for the preparation of solid materials based on reticulated products of urea polycondensation and formaldehyde. (Machine-translation by Google Translate, not legally binding)

Country Status (11)

Country Link
JP (1) JPS492030B1 (en)
BE (1) BE756029R (en)
DE (1) DE2044003C3 (en)
ES (1) ES383547A2 (en)
FR (1) FR2059767B2 (en)
GB (1) GB1296246A (en)
IT (1) IT951912B (en)
NL (1) NL149193B (en)
NO (1) NO131936C (en)
SE (1) SE366050B (en)
ZA (1) ZA705676B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492759A1 (en) * 1980-10-27 1982-04-30 Citroen Sa IMPROVEMENTS RELATING TO ROTARY ASSISTANCE MECHANISMS, IN PARTICULAR FOR VEHICLE STEERING
GB2172894B (en) * 1985-03-29 1989-05-10 Muirhead Data Communications L Melamine/formaldehyde and urea/formaldehyde resinous materials
EP1128405A1 (en) * 2000-02-21 2001-08-29 Cherry GmbH Microswitch module

Also Published As

Publication number Publication date
DE2044003B2 (en) 1974-07-25
FR2059767A2 (en) 1971-06-04
NL149193B (en) 1976-04-15
FR2059767B2 (en) 1973-01-12
NO131936B (en) 1975-05-20
ZA705676B (en) 1971-06-30
SE366050B (en) 1974-04-08
DE2044003C3 (en) 1975-04-10
JPS492030B1 (en) 1974-01-18
GB1296246A (en) 1972-11-15
NL7013493A (en) 1971-03-16
BE756029R (en) 1971-03-11
IT951912B (en) 1973-07-10
DE2044003A1 (en) 1971-03-25
NO131936C (en) 1975-08-27

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