Method of preparing urea formaldehyde foams with a

专利名称：Method of preparing urea formaldehyde

foams with a low formaldehyde content

发明人：Baumann, Heinz申请号：EP84102171.0申请日：19840301公开号：EP0121731A1公开日：19841017

摘要：to achieve a formaldehydarmen but dimensionally stable foam are uf normalsolution of a urea formaldehyde resin vorkondensats before the versch\äumen upto 50% of ureabased on harzfeststoff, and one or more conectionsmittel from the groupof sulphur alkylverbindungen einbasischen, saturated acidssaturated and unsaturateddicarboxylic acids, purinverbindungen, inorganic acids, the group of halogens andchalkogene and their salts, phosphoric acids and their saltsalkalimetallsalze anderdalkalimetallsalze in a small amount of added to the must be such that a ph of 7 donot fall below.and then the solution with a harder, schaummittell\ösung in usualmanner versch\äumt.

申请人：SCHAUM CHEMIE WILHELM BAUER GMBH & CO. KG

地址：Hilgerstrasse 20 W-4300 Essen 1 DE

国籍：DE

代理机构：Wolff, Hans Joachim, Dr.jur. Dipl.-Chem.

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