| 摘要 |
1482888 Flameproof polyimides RHONEPOULENC INDUSTRIES 12 March 1976 [13 March 1975] 10046/76 Heading C3R Up to 15 wt per cent of red phosphorus of mean particle size not above 200 microns is incorporated in a prepolymer of an unsaturated bismide and a diprimary amine to inpart flameproof properties. Reference is made to Specification 1,190,718 in respect of the prepolymer and to Specifications 1,355,402, 1,355,401, 1,314,092 and 1,287,428 for modifying embodiment thereof. |
