KR970074813A - Method for preparing melamine-urea-formaldehyde resin - Google Patents

Method for preparing melamine-urea-formaldehyde resin Download PDF

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Publication number
KR970074813A
KR970074813A KR1019960018447A KR19960018447A KR970074813A KR 970074813 A KR970074813 A KR 970074813A KR 1019960018447 A KR1019960018447 A KR 1019960018447A KR 19960018447 A KR19960018447 A KR 19960018447A KR 970074813 A KR970074813 A KR 970074813A
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KR
South Korea
Prior art keywords
melamine
urea
formaldehyde
formaldehyde resin
resin
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Application number
KR1019960018447A
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Korean (ko)
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KR0174330B1 (en
Inventor
김익범
곽상원
엄상무
Original Assignee
구형우
한솔제지 주식회사
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Application filed by 구형우, 한솔제지 주식회사 filed Critical 구형우
Priority to KR1019960018447A priority Critical patent/KR0174330B1/en
Publication of KR970074813A publication Critical patent/KR970074813A/en
Application granted granted Critical
Publication of KR0174330B1 publication Critical patent/KR0174330B1/en

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    • 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
    • C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
    • C08G12/36—Ureas; Thioureas
    • C08G12/38—Ureas; Thioureas and melamines
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08L61/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08L61/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
    • C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C09J161/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C09J161/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

본 발명은 멜라민-우레아-포름알데히드 수지의 제조방법에 관한 것으로서, 더욱 상세하게는 포름알데히드와 우레아의 축중합 반응시 특정 pH범위 및 알데히드기/아미노기의 몰비 범위내에서 멜라민으로 개질화시키는 3단계 중합공정에 의해 수지가 부분적으로 망상구조를 갖도록 하여 수지내 잔류 포름알데히드의 양을 감소시키고, 이 수지를 접착제로 하여 제조된 보드(board)는 포름알데히드 방출량이 현저히 감소됨은 물론이고 보드의 물리적 특성 특히 내수성이 크게 향상되는 효과를 가지고 있어 내수성 보드(board) 제조시 접착제로 유용한 멜라민-우레아-포름알데히드 수지의 새로은 제조방법에 관한 것이다.The present invention relates to a method for preparing melamine-urea-formaldehyde resin, and more particularly, a three-step polymerization process for reforming with melamine within a specific pH range and a mole ratio of aldehyde group / amino group during condensation polymerization of formaldehyde and urea. This reduces the amount of residual formaldehyde in the resin by allowing the resin to have a partially network structure, and the board made of this resin as an adhesive not only significantly reduces the amount of formaldehyde emitted, but also the physical properties of the board, particularly water resistance. The present invention relates to a novel process for producing melamine-urea-formaldehyde resins, which has the effect of greatly improving and is useful as an adhesive in the manufacture of water-resistant boards.

Description

멜라민-우레아-포름알데히드 수지의 제조방법Method for preparing melamine-urea-formaldehyde resin

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (6)

멜라민, 우레아 및 포름알데히드 단량체를 중합시켜 멜라민-우레아-포름알데히드 수지를 제조하는 방법에 있어서, 가) /pH 3∼5 및 알데히드기/아미노기의 몰비 2.0∼3.0 범위에서 축중합하는 1 단계 중합공정; 나)pH 5∼7 및 알데히드기/아미노기의 몰비 1.0∼1.5 범위에서 축중합하는 2단계 중합공정; 다) pH 7∼8 및 알데히드기/아미노기의 몰비 0.5∼0.7 범위에서 축중합하는 3단계 중합공정으로 이루어진 것을 특징으로 하는 멜라민-우레아-포름알데히드 수지의 제조방법.A method of producing a melamine-urea-formaldehyde resin by polymerizing melamine, urea and formaldehyde monomers, comprising: a) one step polymerization step of polycondensation at a molar ratio of 2.0 to 3.0 and a molar ratio of 3 to 5 and an aldehyde group / amino group; B) a two-stage polymerization step of polycondensation in the molar ratio of pH 5-7 and aldehyde group / amino group of 1.0-1.5; C) A method for producing a melamine-urea-formaldehyde resin, comprising a three step polymerization step of condensation polymerization at a pH of 7 to 8 and a molar ratio of aldehyde group / amino group in a range of 0.5 to 0.7. 제1항에 있어서, 상기 가) 1단계 중합공정시 멜라민은 0∼5중량% 사용하는 것을 특징으로 하는 멜라민-우레아-포름알데히드 수지의 제조방법.The method for preparing melamine-urea-formaldehyde resin according to claim 1, wherein the melamine is used in an amount of 0 to 5% by weight in the one step polymerization process. 제1항에 있어서, 상기 나) 2단계 중합공정시 멜라민은 8∼20중량% 사용하는 것을 특징으로 하는 멜라민-우레아-포름알데히드 수지의 제조방법.The method of claim 1, wherein in the two-stage polymerization step, melamine is used in an amount of 8 to 20% by weight. 제1항에 있어서, 상기 나) 3단계 중합공정시 멜라민은 0∼5중량% 사용하는 것을 특징으로 하는 멜라민-우레아-포름알데히드 수지의 제조방법.According to claim 1, wherein b) Melamine in the three-stage polymerization process, the method for producing melamine-urea-formaldehyde resin, characterized in that 0 to 5% by weight. 제1항 또는 제3항에 있어서, 상기 나) 2단계 중합공정시 멜라민이 15중량% 이상 투입될 경우는 메탄올을 5∼20중량% 투입하는 것을 특징으로 하는 멜라민-우레아-포름알데히드 수지의 제조방법.The melamine-urea-formaldehyde resin according to claim 1 or 3, wherein when melamine is added in an amount of 15% by weight or more during the two-stage polymerization process, methanol is added in an amount of 5 to 20% by weight. Way. 상기 제1항의 제조방법에 의해 제조한 멜라민-우레아-포름알데히드 수지를 보드,(board) 제조시 접착제로 사용하는 방법.Method of using the melamine-urea-formaldehyde resin prepared by the method of claim 1 as an adhesive in the manufacture of a board. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960018447A 1996-05-29 1996-05-29 Method for producing melamine-urea-formaldehyde resin KR0174330B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960018447A KR0174330B1 (en) 1996-05-29 1996-05-29 Method for producing melamine-urea-formaldehyde resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960018447A KR0174330B1 (en) 1996-05-29 1996-05-29 Method for producing melamine-urea-formaldehyde resin

Publications (2)

Publication Number Publication Date
KR970074813A true KR970074813A (en) 1997-12-10
KR0174330B1 KR0174330B1 (en) 1999-04-01

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000047320A (en) * 1998-12-31 2000-07-25 차동천 Production process of amino class thermosetting resin for high water-proofing board
KR100418515B1 (en) * 2001-11-08 2004-02-11 주식회사유니드 Manufacturing method of E0 grade Melamine-Urea-Formaldehyde Resin(MUF) and adhesive for medium density fiber board by use of MDF Resin

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