| 摘要 |
541,944. Moulding powder. KREMER, H. June 17, 1940, Nos. 10486 and 10498. [Class 70] A moulding powder comprises a filler such as wood flour or chips, sawdust, cork or fibrous material on which is deposited a mixture of natural, reclaimed or synthetic rubber (e.g., polymerized chloroprene) and protein material comprising blood albumen or a mixture of casein and blood albumen. The casein and blood albumen glue may contain hardeners and (or) insolubilizing agents. A synthetic resin moulding powder may be added.
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