| 发明名称 |
METHOD OF REDUCING FORMALDEHYDE IN UREA-FORMALDEHYDE RESINS |
| 摘要 |
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 |
| 申请公布号 |
RU2441031(C1) |
申请公布日期 |
2012.01.27 |
| 申请号 |
RU20100129503 |
申请日期 |
2010.07.15 |
| 申请人 |
FEDERAL'NOE GOSUDARSTVENNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA CHUVASHSKIJ GOSUDARSTVENNYJ UNIVERSITET IM. I.N. UL'JANOVA |
发明人 |
SHALFEEVA EHL'VIRA NIKOLAEVNA;FEDOROV ALEKSEJ FEDOROVICH;LUKIN PETR MATVEEVICH |
| 分类号 |
C08G12/40 |
主分类号 |
C08G12/40 |
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