GB1296246A - - Google Patents

Info

Publication number
GB1296246A
GB1296246A GB1296246DA GB1296246A GB 1296246 A GB1296246 A GB 1296246A GB 1296246D A GB1296246D A GB 1296246DA GB 1296246 A GB1296246 A GB 1296246A
Authority
GB
United Kingdom
Prior art keywords
urea
formaldehyde
precondensate
aqueous solution
linked
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
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 filed Critical
Publication of GB1296246A publication Critical patent/GB1296246A/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

1296246 Particulate cross-linked ureaformaldehyde condensation products CIBAGEIGY AG 20 Aug 1970 [12 Sept 1969] 40178/70 Addition to 1239143 Heading C3R Particulate cross-linked urea-formaldehyde condensation products are prepared by adding sulphamic acid or a water-soluble ammonium hydrogen sulphate RNH 3 .HSO 4 , wherein R is H or an organic radical, in the absence of any protective colloid, to an aqueous solution of a urea-formaldehyde precondensate in which the formaldehyde : urea molar ratio exceeds 1À2 : 1 when gel formation starts, and comminuting, drying, and deagglomerating the resultant gel. The precondensate is preferably made at pH 6-9 and 40-100‹ C., and the gelation carried out at between room temperature and 100‹ C. with intensive mixing. The urea and formaldehyde may in part be replaced by other aldehyde-reactive compounds and other aldehydes. In the examples sulphamic acid is added to a UF precondensate in various strengths o aqueous solution.
GB1296246D 1969-09-12 1970-08-20 Expired GB1296246A (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
GB1296246A true GB1296246A (en) 1972-11-15

Family

ID=4395683

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296246D Expired GB1296246A (en) 1969-09-12 1970-08-20

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172894A (en) * 1985-03-29 1986-10-01 Muirhead Data Communications L Melamine/formaldehyde and urea/formaldehyde resinous materials

Families Citing this family (2)

* 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
EP1128405A1 (en) * 2000-02-21 2001-08-29 Cherry GmbH Microswitch module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172894A (en) * 1985-03-29 1986-10-01 Muirhead Data Communications L Melamine/formaldehyde and urea/formaldehyde resinous materials
GB2172894B (en) * 1985-03-29 1989-05-10 Muirhead Data Communications L Melamine/formaldehyde and urea/formaldehyde resinous materials

Also Published As

Publication number Publication date
DE2044003B2 (en) 1974-07-25
FR2059767A2 (en) 1971-06-04
ES383547A2 (en) 1973-01-01
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
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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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee