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verfahren zur herstellung eines novolak-phenolformaldehydharzes, verfahren zur herstellung harzumhüllter giessereiformsande und ein giessereiformteil aus diesen formsanden.
a method for preparing a novolak phenol-formaldehyde resin, a method for making resin coated granules for foundry moulding and a foundry mould component made from the granules.
Last Update: 2014-11-28
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