| 摘要 |
1,231,135. Stain-resistant melamine-formaldehyde moulding compositions. STANDARD OIL CO. 19 Sept., 1969 [30 Dec., 1968], No. 46295/69. Heading C3R. A stain-resistant moulding composition is obtained by mixing a fibrous filler with a melamine-formaldehyde resin syrup, drying the mixture, and then incorporating 1-40 wt. per cent of the dried material of additional melamine. |
