Abstract: A resin for coating formation which comprises a polyarylate comprising 2,2-bis(3-methyl-4-hydroxyphenyl)propane units and a divalent carboxylic acid component comprising 10 to 90 mol % of terephthalic acid units and 90 to 10 mol % of isophthalic acid units, having an inherent viscosity measured in 1,1,2,2-tetrachloroethane at a concentration of 1 g/dl at 25.degree. C. of 0.85 or more, and having a carboxyl value of 20 mol/ton or less. Also disclosed is a process for producing the resin by interfacial polymerization, using a quaternary ammonium salt or a quaternary phosphonium salt having at least 3 alkyl groups each having at least 3 carbon atoms as a catalyst.

Abstract: A structure of a window shelf portion to partition a vehicular passenger compartment, comprising: a) a shelf panel mounted at the window shelf portion so as to partition the passenger compartment and a trunk, said trunk serving as a Helmholtz resonator chamber; b) a shelf trim mounted on the shelf panel with a space provided against the shelf panel; c) a plurality of openings formed on both of the shelf panel and the shelf trim so as to partially provide air passages between the trunk and passenger compartment and as to provide a throat portion of the Helmholtz resonator for the space; and d) at least one partition wall provided in the space between the shelf panel and shelf trim and arranged for reducing an equivalent cross sectional area of the throat portion of the Helmholtz resonator.