Poliisocianato component to a system binder material molding, solution containing poliisocianato, use of a component of poliisocianato or a solution containing poliisocianato system binder, molding material for preparation of nuclei of moulding sand. The system agluinante two components for the preparation of a polyurethane resin for casting.The use of a component of poliisocianato, mixture for the preparation of a core or mold for casting, mould or core for casting, method for the preparation of a core or mold for casting and the use of a sulfu00f4nico acid of general formula R - so u00b2 -

摘要

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