30. Furan-Based Adhesives
30. Furan-Based Adhesives
30. Furan-Based Adhesives
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V. FURAN RESINS AS FOUNDRY BINDERS<br />
<strong>Furan</strong> resins have been extensively used as foundry binders in combination with<br />
formaldehyde, urea, phenol, and casein, for decades [12,13]. The main two monomers<br />
used in this field are 1 and 2. Table 3 summarizes their proportions in different commercial<br />
phenolic resins [12].<br />
The main advantages of furan resins are due to their excellent thermal stability, and<br />
remarkable resistance to acidic conditions, as well as to fire and corrosion. These resins<br />
Scheme 3<br />
Table 3 Proportions of 1 and 2 in Commercial Phenolic Resins<br />
Supplier<br />
Amount<br />
added<br />
(% w/w)<br />
1 2<br />
Amount<br />
retained after<br />
curing (% of the<br />
amount added)<br />
Amount<br />
added<br />
(% w/w)<br />
Amount<br />
retained after<br />
curing (% of the<br />
amount added)<br />
Bakelite 0215 Quaker Oats Co. 10 90 10 94<br />
Bakelite 0215 Quaker Oats Co. 20 87 20 86<br />
Bakelite 2417 Quaker Oats Co. 20 85 20 83<br />
Durez 7031 OxyChem 20 88 20 85<br />
Durez 8045 OxyChem — — 20 77<br />
Durez 14000 OxyChem — — 20 87<br />
Durite 278 Contenti Inc. 10 96 10 91<br />
Durite 278 Contenti Inc. 20 96 20 92<br />
Durite 3022 Contenti Inc. 10 95 10 93<br />
Durite 3022 Contenti Inc. 20 92 20 89<br />
Durite 1530 Contenti Inc. 20 93 20 92<br />
Monsanto 795 Monsanto 20 88 — —<br />
Varcum 1364 OxyChem 20 87 20 84<br />
Varcum 1192 OxyChem 20 69 20 80<br />
Copyright © 2003 by Taylor & Francis Group, LLC
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