QUANTITATIVE C-13 NMR-STUDY OF UREA FORMALDEHYDE RESINS IN RELATION TO THE FORMALDEHYDE EMISSION LEVELS

被引：41

作者：

KIM, MG ^{[1
]}

AMOS, LW ^{[1
]}

机构：

[1] WEYERHAEUSER CO,TACOMA,WA 98477

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1990年 / 29卷 / 02期

关键词：

D O I：

10.1021/ie00098a010

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A quantitative carbon-13 NMR spectroscopic study on urea-formaldehyde resins, at various stages in the synthesis and at various formaldehyde/urea mole ratios, revealed an improved descriptive chemistry of methylolation and methylene bond-forming reactions. The results also revealed the polymer molecular structure in more detail. Resins prepared with an initial formaldehyde/urea mole ratio of 2.10, 1.75, and 1.50 were evaluated at a final formaldehyde/urea ratio of 1.0 by manufacturing and testing wood particleboards. The emitted formaldehyde level of the board decreased, albeit small, as the initial mole ratio decreased. © 1990, American Chemical Society. All rights reserved.

引用

页码：208 / 212

页数：5

共 19 条

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