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Patents with Abstracts

Fiber board capable of capturing and decomposing aldehyde
Nishio, Hatano and Kuki of Nichiha Corporation developed a board capable of capturing and decomposing both formaldehyde and acetaldehyde consisting of a wood fiber board with a plant fiber of 30 wt% or more, and an aldehyde capturing agent such as carbodihydrazide which is impregnated and solidified inside the side of the fiber board. In addition to the wood fiber board, a fiber board made of a mixture material of a resin fiber and a plant fiber combined. A carbodihydrazide is sprayed onto the fiber board in the form of water solution and optionally comprises a surfactant. (RDC 7/9/2012)

Light wood-based materials having good mechanical properties and low formaldehyde emission
Weinkotz  et al of BASF, Germany, developed a light wood-containing material having an average density in the range from 200 to 600 kg/m.sup.3, comprising, based in each case on the wood-containing material: A) from 30 to 95% by weight of wood particles; B) from 1 to 15% by weight of a filler having a bulk density in the range from 10 to 100 kg/m.sup.3, selected from the group consisting of foamable plastic particles and already foamed plastic particles; C) from 3 to 50% by weight of a binder comprising an aminoplast resin and an organic isocyanate having at least two isocyanate groups and, if appropriate, D) additives. (RDC 6/7/2012)

Decorative laminate and method of making
O'Brien and Taillan of The Diller Corporation, Ohio, developed a  decorative laminate is provided and includes a core with at least one epoxy resin impregnated fiberboard sheet. The decorative laminate also includes at least one decorative layer provided adjacent to the core. A method of forming a decorative laminate is also provided. (RDC 6/7/2012)

The efficiency of tannin as a formaldehyde scavenger chemical in medium density fiberboard
Composites Part B: Engineering 43  #5 (2012)
Boran et al Karadeniz Technical University, Turkey, determined the effect of tannin content of urea formaldehyde (UF) resin on the panel properties of medium density fiberboard (MDF). Tannin extracted from the bark of white oak (Quercus alba) was added to UF resin at different ratios (based on the resin) to decrease the free formaldehyde content of MDF panels in this study. It was determined that free formaldehyde values of MDF panels decreased when the ratio of tannin content in UF resin increased. However, the modulus of rupture (MOR), modulus of elasticity (MOE), and internal bond strength (IB) of these panels were a little lower, and the thickness swelling (TS) (24 h) and water absorption (WA) (24 h) values were a little higher compared to the control MDF panels. (RDC 5/17/2012)


Roger D. Corneliussen

Maro Polymer Links
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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen

** Date of latest addition; date of first entry is 5/17/2012.