(JP2812738-B2)      Prodn. of mouldings with a consolidated edge zone and cellular core (integral foam) involves reacting (a) organic and/or modified organic polyisocyanates with (b) high mol. cpd(s), having at least 2 reactive H atoms and opt. (c) low mol. chain extenders and/or crosslinkers in the presence of (d) blowing agent, (e) catalysts and opt. (f) additives. The novelty is that the blowing agent (d) consists of low boiling 4-8C (cyclo)aliphatic alkane(s).    USE/ADVANTAGE -   The moulding is elastomeric. The process is claimed for producing soft, flexible shoe soles with a total density of 0.4-1.0 g/cc by the one-shot process using high pressure technology (RIM) in a closed mould. The fluorochlorohydrocarbons normally used as blowing agents are (partly) replaced by other, environmentally friendly blowing agents. The process is also useful for making microcellular elastomer mouldings esp. for use in the car industry (e.g. for bumper covers, protective strips and body components such as gutters, mudguards, spoilers and wheel arch extensions), technical housings and drive rolls. The integral foams are useful e.g. as arm rests, head restraints, safety covers in car passenger compartments, motor cycle and bicycle saddles and coverings.    (EP364854-B2)      Prodn. of mouldings with a consolidated edge zone and cellular core (integral foam) involves reacting (a) organic and/or modified organic polyisocyanates with (b) high mol. cpd(s), having at least 2 reactive H atoms and opt. (c) low mol. chain extenders and/or crosslinkers in the presence of (d) blowing agent, (e) catalysts and opt. (f) additives. The novelty is that the blowing agent (d) consists of low boiling 4-8C (cyclo)aliphatic alkane(s).    USE/ADVANTAGE -   The moulding is elastomeric. The process is claimed for producing soft, flexible shoe soles with a total density of 0.4-1.0 g/cc by the one-shot process using high pressure technology (RIM) in a closed mould. The fluorochlorohydrocarbons normally used as blowing agents are (partly) replaced by other, environmentally friendly blowing agents. The process is also useful for making microcellular elastomer mouldings esp. for use in the car industry (e.g. for bumper covers, protective strips and body components such as gutters, mudguards, spoilers and wheel arch extensions), technical housings and drive rolls. The integral foams are useful e.g. as arm rests, head restraints, safety covers in car passenger compartments, motor cycle and bicycle saddles and coverings.