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2 441 031

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(51)

IPC

C08G12/40(2006-01-01)

(21) (22)

Application

2010129503/04, 2010-07-15

(24)

Start date

2010-07-15

(22)

Actual filing date

2010-07-15

(45)

Published

2012-01-27

(72)

Inventor

Shalfeeva Ehl'Vira NikolaevnaFedorov Aleksej FedorovichLukin Petr Matveevich

(73)

Holder

Federal'Noe Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Chuvashskij Gosudarstvennyj Universitet Im. I.N. Ul'Janova

METHOD OF REDUCING FORMALDEHYDE IN UREA-FORMALDEHYDE RESINS Russian patent published in 2012 - IPC C08G12/40

Abstract RU 2441031 C1

FIELD: chemistry.

SUBSTANCE: method involves treating urea-formaldehyde resin at pH 7.0-8.5 with 20-25% aqueous solution of sodium sulphite or aqueous solution of a mixture of sodium sulphite with bisulphite in ratio 3:1, taken with 10-20% excess to the equimolar amount of the contained formaldehyde.

EFFECT: reduced content of formaldehyde in urea-formaldehyde resin before addition thereof into production of articles based thereon.

2 cl, 9 ex, 1 tbl

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RU 2 441 031 C1

Authors

Shalfeeva Ehl'Vira Nikolaevna

Fedorov Aleksej Fedorovich

Lukin Petr Matveevich

Dates

2012-01-27—Published

2010-07-15—Filed