RU2004129997A - METHOD FOR PRODUCING CARBAMIDE FORMALDEHYDE RESIN - Google Patents

METHOD FOR PRODUCING CARBAMIDE FORMALDEHYDE RESIN Download PDF

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Publication number
RU2004129997A
RU2004129997A RU2004129997/04A RU2004129997A RU2004129997A RU 2004129997 A RU2004129997 A RU 2004129997A RU 2004129997/04 A RU2004129997/04 A RU 2004129997/04A RU 2004129997 A RU2004129997 A RU 2004129997A RU 2004129997 A RU2004129997 A RU 2004129997A
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RU
Russia
Prior art keywords
urea
formaldehyde
condensation
formaldehyde resin
producing
Prior art date
Application number
RU2004129997/04A
Other languages
Russian (ru)
Other versions
RU2280045C2 (en
Inventor
Сергей Васильевич Афанасьев (RU)
Сергей Васильевич Афанасьев
Владимир Николаевич Махлай (RU)
Владимир Николаевич Махлай
Original Assignee
ОАО "Толь ттиазот" (RU)
ОАО "Тольяттиазот"
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.)
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Publication date
Application filed by ОАО "Толь ттиазот" (RU), ОАО "Тольяттиазот" filed Critical ОАО "Толь ттиазот" (RU)
Priority to RU2004129997/04A priority Critical patent/RU2280045C2/en
Publication of RU2004129997A publication Critical patent/RU2004129997A/en
Application granted granted Critical
Publication of RU2280045C2 publication Critical patent/RU2280045C2/en

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  • Phenolic Resins Or Amino Resins (AREA)

Claims (1)

Способ получения карбамидоформальдегидной смолы путем конденсации карбамидоформальдегидного концентрата, представляющего собой водную композицию, содержащую 41,5-60,0 мас.% общего формальдегида и 20,5-25,0 мас.% общего карбамида с регулятором вязкости в присутствии 0,02-0,20 мас.% буферной добавки в расчете на 100 мас.% карбамидоформальдегидного концентрата и с первой порцией карбамида при нагревания в водном растворе с переменной кислотностью с последующей доконденсацией образовавшегося продукта с дополнительным количеством карбамида и вводом второй порции буферной добавки при исходном и конечном мольном отношении карбамида и формальдегида 1:(1,9-2.1) и 1:(1.02-1,7) соответственно и охлаждения готовой смолы, отличающийся тем, что в качестве регулятора вязкости используется 37%-ный формалин, вводимый на стадии щелочной конденсации.A method of producing a urea-formaldehyde resin by condensation of a urea-formaldehyde concentrate, which is an aqueous composition containing 41.5-60.0 wt.% Total formaldehyde and 20.5-25.0 wt.% Total urea with a viscosity regulator in the presence of 0.02-0 , 20 wt.% Buffer additive per 100 wt.% Urea-formaldehyde concentrate and with the first portion of urea when heated in an aqueous solution with variable acidity, followed by condensation of the resulting product with an additional amount of urea and introduction into a second portion of the buffer additive with the initial and final molar ratio of urea and formaldehyde 1: (1.9-2.1) and 1: (1.02-1.7), respectively, and cooling the finished resin, characterized in that 37% is used as a viscosity regulator formalin introduced at the stage of alkaline condensation.
RU2004129997/04A 2004-10-12 2004-10-12 Method of production of the carbamide-formaldehyde resin RU2280045C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2004129997/04A RU2280045C2 (en) 2004-10-12 2004-10-12 Method of production of the carbamide-formaldehyde resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2004129997/04A RU2280045C2 (en) 2004-10-12 2004-10-12 Method of production of the carbamide-formaldehyde resin

Publications (2)

Publication Number Publication Date
RU2004129997A true RU2004129997A (en) 2006-03-20
RU2280045C2 RU2280045C2 (en) 2006-07-20

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ID=36117038

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RU2004129997/04A RU2280045C2 (en) 2004-10-12 2004-10-12 Method of production of the carbamide-formaldehyde resin

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RU (1) RU2280045C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2443721C1 (en) * 2010-12-15 2012-02-27 Открытое акционерное общество "МЕТАФРАКС" Method of producing urea formaldehyde resin
RU2619589C1 (en) * 2016-06-20 2017-05-17 федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технологический университет" (ФГБОУ ВО "КНИТУ") Method of producing carbamide-formaldehyde resin

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Publication number Publication date
RU2280045C2 (en) 2006-07-20

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