WO2007075123A3 - Synthetic resin and a method for the production thereof - Google Patents

Synthetic resin and a method for the production thereof Download PDF

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Publication number
WO2007075123A3
WO2007075123A3 PCT/RU2006/000673 RU2006000673W WO2007075123A3 WO 2007075123 A3 WO2007075123 A3 WO 2007075123A3 RU 2006000673 W RU2006000673 W RU 2006000673W WO 2007075123 A3 WO2007075123 A3 WO 2007075123A3
Authority
WO
WIPO (PCT)
Prior art keywords
mass
formaldehyde
carbamide
resin
production
Prior art date
Application number
PCT/RU2006/000673
Other languages
French (fr)
Russian (ru)
Other versions
WO2007075123A2 (en
Inventor
Sergey Leonidovich Krivosheev
Viktor Vladimirovich Vasiliev
Vera Stefanovna Vasilieva
Vadim Valerevich Sysoev
Original Assignee
Sergey Leonidovich Krivosheev
Viktor Vladimirovich Vasiliev
Vera Stefanovna Vasilieva
Vadim Valerevich Sysoev
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 Sergey Leonidovich Krivosheev, Viktor Vladimirovich Vasiliev, Vera Stefanovna Vasilieva, Vadim Valerevich Sysoev filed Critical Sergey Leonidovich Krivosheev
Publication of WO2007075123A2 publication Critical patent/WO2007075123A2/en
Publication of WO2007075123A3 publication Critical patent/WO2007075123A3/en

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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

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)
  • Phenolic Resins Or Amino Resins (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Abstract

The invention relates to a synthetic resin for producing wood chipboards, plywood and glued joints and to a method for the production thereof. The resin production component ratio consists of 52.2-68.1 mass % carbamide, 29.0-37.9 mass % formaldehyde, the rest being the oxidised starch reagent up to 100 mass %. The molecular mass of the obtained resin is equal to or greater than 1000. The inventive method consists in preparing a reaction mixture which is based on carbamide and formaldehyde with a pH of 7.0-7.5, in heating a mixture to a temperature equal to less than a boiling point for a time required for forming hydroxymethyl groups, in condensing by reducing pH to 4.2-4.5 for forming oligomer whose polycondensation degree ranges from 6 to 10, in neutralising to the pH ranging from 6.7-7.0, in reducing the temperature by 20-27 °C, in introducing an oxidised starch reagent in a quantity of 1-25 mass parts with respect to a dry substance by counting on the base of 100 mass parts of a dry formaldehyde and in finishing the condensation by adding carbamide and by cooling to a room temperature. Said invention makes it possible to reduce a free formaldehyde content and to increase the resin degree of miscibility with water.
PCT/RU2006/000673 2005-12-14 2006-12-12 Synthetic resin and a method for the production thereof WO2007075123A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2005139066/04A RU2296776C1 (en) 2005-12-14 2005-12-14 Synthetic resin and the method of its production
RU2005139066 2005-12-14

Publications (2)

Publication Number Publication Date
WO2007075123A2 WO2007075123A2 (en) 2007-07-05
WO2007075123A3 true WO2007075123A3 (en) 2007-08-23

Family

ID=38000308

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2006/000673 WO2007075123A2 (en) 2005-12-14 2006-12-12 Synthetic resin and a method for the production thereof

Country Status (2)

Country Link
RU (1) RU2296776C1 (en)
WO (1) WO2007075123A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111333799B (en) * 2020-03-31 2023-04-28 广西精典化工新材料有限公司 Synthetic method of urea-formaldehyde resin with ultralow formaldehyde release

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2161165C2 (en) * 1999-02-09 2000-12-27 Открытое акционерное общество "Акрон" Method of preparing carbamido and/or melaminoformaldehyde resins
CN1291632A (en) * 2000-09-21 2001-04-18 何卫平 Low-poison urea-formaldehyde resin adhesive and its preparing process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2161165C2 (en) * 1999-02-09 2000-12-27 Открытое акционерное общество "Акрон" Method of preparing carbamido and/or melaminoformaldehyde resins
CN1291632A (en) * 2000-09-21 2001-04-18 何卫平 Low-poison urea-formaldehyde resin adhesive and its preparing process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JU G. DORONIN ET AL.: "Sinteticheskie smoly v derevoobrabotke", MOSCOW. LESNAYA PROMYSHLENNOST, 1987, pages 10 - 11, 30 - 39 *

Also Published As

Publication number Publication date
RU2296776C1 (en) 2007-04-10
WO2007075123A2 (en) 2007-07-05

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