SE8104754L - PROCEDURE FOR PREPARING A NON-ADJUSTABLE CARBAMIDE FORMAL HEARTS - Google Patents

PROCEDURE FOR PREPARING A NON-ADJUSTABLE CARBAMIDE FORMAL HEARTS

Info

Publication number
SE8104754L
SE8104754L SE8104754A SE8104754A SE8104754L SE 8104754 L SE8104754 L SE 8104754L SE 8104754 A SE8104754 A SE 8104754A SE 8104754 A SE8104754 A SE 8104754A SE 8104754 L SE8104754 L SE 8104754L
Authority
SE
Sweden
Prior art keywords
urea
formaldehyde
carbamide
hearts
formal
Prior art date
Application number
SE8104754A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE450385B (en
Inventor
Cebrian A Gil
Original Assignee
Patentes Novedades Sa
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 Patentes Novedades Sa filed Critical Patentes Novedades Sa
Publication of SE8104754L publication Critical patent/SE8104754L/en
Publication of SE450385B publication Critical patent/SE450385B/en

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

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)
  • Polyurethanes Or Polyureas (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

A process for the preparation of a tack free urea/formaldehyde resin having a solids content of 64-66% and a viscosity at 25.degree.C of 150-300 cps, in which a formaldehyde source is treated with a strong organic base, urea is added to obtain a formaldehyde/urea mole ratio lying between 1.90 and 2.35 : 1, the pH is adjusted to 5.0 - 6.3 with an acid, the polymerization reaction is stopped when the product has reached the required vicosity by an inorganic base and a further amount of urea is added such that the final formaldehyde/urea mole ratio becomes 1.38 to 1.70.
SE8104754A 1980-08-18 1981-08-07 PROCEDURE FOR PREPARING A NON-STICKING CARBAMIDE FORMAL HEARTS SE450385B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES494322A ES8106163A1 (en) 1980-08-18 1980-08-18 Process for the preparation of a non-tacky urea-formaldehyde resin

Publications (2)

Publication Number Publication Date
SE8104754L true SE8104754L (en) 1982-02-19
SE450385B SE450385B (en) 1987-06-22

Family

ID=8480971

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8104754A SE450385B (en) 1980-08-18 1981-08-07 PROCEDURE FOR PREPARING A NON-STICKING CARBAMIDE FORMAL HEARTS

Country Status (8)

Country Link
AR (1) AR226474A1 (en)
AT (1) AT387226B (en)
CA (1) CA1175970A (en)
DE (1) DE3132280A1 (en)
ES (1) ES8106163A1 (en)
MX (1) MX158011A (en)
NO (1) NO156980C (en)
SE (1) SE450385B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD283732A7 (en) * 1988-10-21 1990-10-24 ������@�����`������@ ���@������� k�� METHOD FOR PRODUCING A REACTIVE UREA FORMALDEHYDE RESIN LIME

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT951962B (en) * 1971-12-27 1973-07-10 Sir Soc Italiana Resine Spa PROCEDURE FOR THE PREPARATION OF RESINS FROM UREA AND FORMALDEHYDE
US3994850A (en) * 1976-01-05 1976-11-30 Champion International Corporation Modified urea-formaldehyde resin adhesive
OA06231A (en) * 1978-04-07 1981-06-30 Patentes Novedades Sa Process for preparing urea-formaldehyde glues containing an inorganic salt.
DE2825590C2 (en) * 1978-06-10 1983-05-05 Th. Goldschmidt Ag, 4300 Essen Process for the production of thermosetting urea-formaldehyde resins and their use

Also Published As

Publication number Publication date
AR226474A1 (en) 1982-07-15
SE450385B (en) 1987-06-22
ATA330081A (en) 1988-05-15
AT387226B (en) 1988-12-27
ES494322A0 (en) 1981-08-01
ES8106163A1 (en) 1981-08-01
CA1175970A (en) 1984-10-09
DE3132280A1 (en) 1982-06-16
NO156980C (en) 1987-12-30
NO156980B (en) 1987-09-21
NO812759L (en) 1982-02-19
MX158011A (en) 1988-12-29

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