| 摘要 |
1,131,375. Brazing paste. STANDARD TELEPHONES & CABLES Ltd. 12 May, 1967, No. 22150/67. Heading B3R. A copper brazing paste comprises a solution of polystyrene in volatile solvent, with which solution there is mixed copper powder to produce a thick viscous paste. The solvent may be solvent naphtha, or xylol, with the polystyrene being in the range of 20-25% by weight of the solvent, and copper powder of at least 200 mesh is mixed with the solution. |
