Rhone-poulenc Specialites Chimiques

Rhone-poulenc Agrochimie

Rhone-poulenc-textile

Bruno Giroud-Abel

Jean Goletto

Robert Cuidard

Francis Molle

Vincent Rochina

Artificial seeds

Polyamide-based molding compositions having enhanced flexibility and resilience, especially at low temperatures, are prepared from (1) semirigid copolyamides prepared from fatty acid dimers, (2) elastomers containing moieties compatible or reactive with such copolyamides (1) and comprising olefinic copolymers bearing carboxyl and/or carboxylate groups, copolyester-amides, polyurethanes, organopolysiloxane and polyurethane block copolymers, and copolymers produced from a latex which comprises suitable functional groups, and, optionally, (3) conventional polyamides.

Moulding compositions comprised of semirigid, fatty acid copolyamides,

The polyamide polymers, notably the nylons, are effectively heat stabilized, characteristically with good retention of mechanical properties, by formulating therewith stabilizing amounts of (i) at least one lanthanide or yttrium-based compound and (ii) at least one ammonium, or alkali or alkaline earth metal halide.

Heat stabilized polyamide compositions

The invention relates to a homogeneous fluid composition which can be shaped, consisting of N-methylpyrrolidone-2, poly-para-phenyleneterephthalamide in an amount of 5 to 7% by weight, relative to the weight of the composition, calcium chloride or lithium chloride, and a tertiary amine with a pK H.sub.2 O equal to at most 6.60, and also to the process for its production. The composition can be shaped directly to form filaments, fibres, films or fibrids which can be used, for example, in the textile industry.

Poly-para-phenyleneterephthalamide compositions, their preparation and a

The polyamides are fireproofed and, e.g., phosphine-inhibited, by formulating red phosphorus and at least one lanthanide or yttrium compound therewith.

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Ecully, France

Bruno Giroud-Abel