Abstract: A resist composition including a resin component having a structural unit derived from a compound represented by general formula (a0-1) and a structural unit containing an acid dissociable group which exhibits increased polarity by the action of acid, and an organic solvent including a component (S1) and a component (S2), the amount of the component (S1) in the organic solvent is more than 50% by weight (W1 represents a polymerizable group-containing group; Yax1 represents a single bond or a (nax1+1)-valent linking group; and nax1 represents an integer of 1 to 3): component (S1): propylene glycol monoalkyl ether component (S2): at least one of propylene glycol monoalkylether carboxylate, cycloalkanone, alkyl lactate, lactone, diacetone alcohol, and 2-hydroxyisobutyric acid alkyl ester

Abstract: A heat-resisting aluminum alloy contains manganese ranging from 6 to 8% by weight, iron ranging from 0.5 to 2% by weight, zirconium ranging from 0.03 to 0.5% by weight, and copper ranging from 2 to 5% by weight, the balance being essentially aluminum. The aluminum alloy has been confirmed to be high in mechanical strength both at ordinary temperatures and at high temperatures while to be suitable for producing an article by using so-called atomization process.

Abstract: The invention provides an aluminum base bearing alloy which is excellent in both lubricating capability and fatigue resistance and is useful, e.g. in automotive engines. The bearing alloy consists essentially of at least one lubricating element such as Pb and/or Sn the total amount of which is more than 0.04 and not more than 0.07 by sectional area ratio to the aluminum matrix, Si the amount of which is in the range from 0.01 to 0.17 by sectional area ratio to the aluminum matrix, 0.2-5.0 wt % of at least one reinforcing element such as Cu and/or Cr, 0-3.0 wt % of at least one refining element such as Ti and/or B and the balance of Al. The grain size of the lubricating element(s) is not larger than 8 .mu.m, and the grain size of Si is not larger than 12 .mu.m and preferably not smaller than 6 .mu.m.

Abstract: Catalyst useful to purify exhaust gases from motor vehicles and the like comprising SnO.sub.2 and at least one of Pt, Pd, Rh, Ir and Ru added thereto to ensure improved activity. The catalyst may further contain silica and is thereby improved in mechanical strength. Ceramic fibers, when additionally incorporated into the catalyst, further increases the mechanical strength of the catalyst.