[go: up one dir, main page]

GB484200A - Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products - Google Patents

Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products

Info

Publication number
GB484200A
GB484200A GB26307/36A GB2630736A GB484200A GB 484200 A GB484200 A GB 484200A GB 26307/36 A GB26307/36 A GB 26307/36A GB 2630736 A GB2630736 A GB 2630736A GB 484200 A GB484200 A GB 484200A
Authority
GB
United Kingdom
Prior art keywords
urea
formaldehyde
soluble
alcohol
alcoholic solvent
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
GB26307/36A
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.)
SYDNEY LEONARD MORGAN SAUNDERS
Original Assignee
SYDNEY LEONARD MORGAN SAUNDERS
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 SYDNEY LEONARD MORGAN SAUNDERS filed Critical SYDNEY LEONARD MORGAN SAUNDERS
Priority to GB26307/36A priority Critical patent/GB484200A/en
Priority to GB12493/38A priority patent/GB501388A/en
Publication of GB484200A publication Critical patent/GB484200A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C08G12/40—Chemically modified polycondensates
    • C08G12/42—Chemically modified polycondensates by etherifying
    • C08G12/421—Chemically modified polycondensates by etherifying of polycondensates based on acyclic or carbocyclic compounds
    • C08G12/422—Chemically modified polycondensates by etherifying of polycondensates based on acyclic or carbocyclic compounds based on 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)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

Reaction products of urea, thiourea and derivatives thereof with formaldehyde, which are still water-soluble, are dissolved or suspended in a primary or secondary monohydric alcoholic solvent and are heated in the presence of an acid catalyst and of an amount of formaldehyde sufficient to bring the total free and combined formaldehyde into excess of two molecular proportions to one of urea, the alcoholic solvent together with any water present or formed being simultaneously or subsequently distilled off and the heating being continued until the product is soluble in hydrocarbon solvents. The reaction may be carried out in a vessel heated by a bath maintained between 120-140 DEG C. and at atmospheric, or under increased or reduced pressure, according to the solvent. The quantity of formaldehyde used depends upon the initial condensation product and upon the quantity and strength of acid employed. Specified acids are hydrochloric, sulphuric, acetic, oxalic, lactic, phthalic and maleic. The alcoholic solvent, which may be added at once or in stages, preferably consists of an alcohol containing at least four carbon atoms and sparingly soluble in water, e.g. butyl alcohol; benzyl alcohol may be employed in conjunction with an alcohol of lower boiling point. Natural and artificial resins, soluble in the alcoholic solvent, may be added at any suitable stage. In a number of examples, dimethylol urea is worked up with paraformaldehyde in butyl alcohol. Examples 12 and 13 include further additions, respectively, of ethylene glycol mono linoleate and linoleic diglyceride. Examples 9-11 involve the use, respectively, of commercial amyl, octadecyl, and benzyl alcohols. In example 5, urea and formalin, acidified with sodium acetate and boric acid, are first heated at 50 DEG C., after which butyl alcohol and alcoholic hydrochloric acid are added and distillation effected first at 130 DEG C., and then at 140 DEG C. Specification 442,054 is referred to.
GB26307/36A 1936-09-28 1936-09-28 Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products Expired GB484200A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB26307/36A GB484200A (en) 1936-09-28 1936-09-28 Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products
GB12493/38A GB501388A (en) 1936-09-28 1938-04-26 Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB26307/36A GB484200A (en) 1936-09-28 1936-09-28 Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products
GB12493/38A GB501388A (en) 1936-09-28 1938-04-26 Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products

Publications (1)

Publication Number Publication Date
GB484200A true GB484200A (en) 1938-04-28

Family

ID=62527922

Family Applications (2)

Application Number Title Priority Date Filing Date
GB26307/36A Expired GB484200A (en) 1936-09-28 1936-09-28 Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products
GB12493/38A Expired GB501388A (en) 1936-09-28 1938-04-26 Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB12493/38A Expired GB501388A (en) 1936-09-28 1938-04-26 Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products

Country Status (1)

Country Link
GB (2) GB484200A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524472A (en) * 1946-11-08 1950-10-03 American Cyanamid Co Process for preparing thermosetting aminoplast compositions
US2544351A (en) * 1946-11-08 1951-03-06 American Cyanamid Co Process for preparing thermosetting urea-formaldehyde compositions
US2824855A (en) * 1954-12-20 1958-02-25 Freeman Chemical Corp Preparation of epoxide resins
CN111848894A (en) * 2020-06-30 2020-10-30 长兴化学工业(中国)有限公司 Urea-formaldehyde resin with high solid content and low free formaldehyde content and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524472A (en) * 1946-11-08 1950-10-03 American Cyanamid Co Process for preparing thermosetting aminoplast compositions
US2544351A (en) * 1946-11-08 1951-03-06 American Cyanamid Co Process for preparing thermosetting urea-formaldehyde compositions
US2824855A (en) * 1954-12-20 1958-02-25 Freeman Chemical Corp Preparation of epoxide resins
CN111848894A (en) * 2020-06-30 2020-10-30 长兴化学工业(中国)有限公司 Urea-formaldehyde resin with high solid content and low free formaldehyde content and preparation method thereof

Also Published As

Publication number Publication date
GB501388A (en) 1939-02-27

Similar Documents

Publication Publication Date Title
GB533998A (en) Method of preparing resins suitable for plastic and coating compositions
GB484200A (en) Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products
US2217372A (en) Urea-formaldehyde resins
GB378596A (en) Process for the production of synthetic resins from alcoholamines and organic acids
US2174012A (en) Preparation of urea-formaldehyde-condensation products
FR1220859A (en) Process for the preparation of polyvinyl acetal dispersions
US2079626A (en) Synthetic resin varnishes and synthetic resins
DE664271C (en) Process for the preparation of alkoxy or aralkoxy acetals
GB333941A (en) Process for the manufacture of condensation products from aliphatic aldehydes and bases of the naphthalene series
GB343572A (en) Improvements in or relating to laminated materials
GB460275A (en) Improvements in the manufacture and production of urea-formaldehyde resins
GB646080A (en) A process for the preparation and application of reactive phenol-aldehyde resins
US1967685A (en) Condensation process yielding artificial masses of the urea formaldehyde type
GB442054A (en) Improvements in or relating to the preparation of compositions containing urea-formaldehyde condensation products
GB493810A (en) Improvements in or relating to the preparation of resinous coating compositions
GB352981A (en) Improvements in the manufacture and production of condensation products
GB463688A (en) Improvements in or relating to synthetic resin products
GB575912A (en) Improvements in the manufacture of coloured articles
GB453048A (en) Improved process for sizing fibrous materials
GB506368A (en) The manufacture of resinous condensation products
GB321258A (en) Improvements in the manufacture and production of artificial masses, lacquers and solutions containing both cellulose esters and rubber
GB360909A (en) Improvements in the manufacture and production of artificial masses
GB436308A (en) Improvements in varnishes
GB467088A (en) Improvements relating to lacquers
GB327158A (en) Process for the manufacture of improved phenolformaldehyde condensation products