| 摘要 |
530,790. Plastic compositions. AGRICULTURAL & CHEMICAL PRODUCTS, Ltd., and GUTTMAN, J. June 14, 1939, No. 17414. [Class 70] [Also in Group IV] A plastic material, which may be bordered e.g. by treatment with formaldehyde, to give a horn-like product, comprises a mixture of casein and yeast, either or both components having been subjected, prior to mixing or in admixture, to an acid treatment e.g. with lactic acid. An example is given.
|
