Abstract: The invention concerns a thermosetting moulding composition comprising: a polyester or vinyl ester epoxy resin (A) in solution in an ethylenically unsaturated liquid monomer (B); at least an anti-shrink additive (C); an organic peroxide catalyst; and a mineral filler. Said composition is characterized in that the ethylenically unsaturated liquid monomer (B) is a vinyltoluene and/or a t-butyl styrene; and the anti-shrink additive(s) is/are free of add functionality and is/are selected among methyl methacrylate copolymers and a comonomer which is a vinyl and/or a methyl acrylate and/or ethyl acrylate monomer, in solution in the ethylenically unsaturated monomer (B). Such a composition is designed, in particular, for the automotive industry.

Abstract: Moldable and pigmentable heat-curable compositions which can be employed for forming molded articles with zero or practically zero shrinkage (low profile type) or a small expansion include a heat-curable resin, a catalyst, a (meth)acrylic polymer in powder form with a dimension smaller than 150 .mu.m, at least one inorganic filler and, optionally, reinforcing fibers and organic or inorganic pigments.

Abstract: A copolymer based on ethylene and propylene, having a density of between 0.933 and 0.946 g/cm.sup.3 and a melt index of between 2 and 10 dg/min, wherein the copolymer has from 3 to 27 alkyl groups per 1000 carbon atoms in the molecule and wherein its density .rho. and its proportion m of alkyl groups in the molecule satisfy the relationship 0.948.ltoreq..rho.+0.71 m.ltoreq.0.9525. The copolymer is produced by feeding a flux comprising from 80 to 95% by weight of ethylene and from 5 to 20% by weight of propylene into at least one reactor in stationary operation, the reactor having at least one reaction zone; and copolymerizing the ethylene and propylene in the reactor at a pressure of from 300 to 2500 bar and a temperature of from 180.degree. to 320.degree. C. in the presence of a Ziegler type catalyst system.