A stable aqueous dispersion comprising a particulate water-soluble polymer and a low-molecular weight polyethylene glycol in which the water-soluble polymer is substantially insoluble, water, and a high molecular weight polyethylene glycol, and a method for making it, are disclosed. The dispersion is easier to handle and has a higher dissolution rate than particulate water-soluble polymers.

Silver-filled glass pastes useful for the attachment of silicon semi-conductor devices (dies) to substrates comprise particulate silver and a lead phosphate glass, together with conventional organic components. The pastes have low bonding temperatures, and give good adhesion at firing temperatures of 350 to 460 DEG C.

PCT No. PCT/SE84/00433 Sec. 371 Date Aug. 14, 1986 Sec. 102(e) Date Aug. 14, 1986 PCT Filed Dec. 18, 1984 PCT Pub. No. WO86/03802 PCT Pub. Date Jul. 3, 1986.A filtering device intended to be attached temporarily to an exhaust pipe (30) of a vehicle at occasional indoors driving and the like. The device comprises a filter (14), a filter holder (11) and a connection member (13,40) for attachment to ...