Abstract: Thermoplastic compositions are disclosed based on syndiotactic polymers of styrene, reinforced with rigid fillers, comprising: a) a crystalline syndiotactic polymer of styrene; b) a polyarylene-ether; c) 1-200 parts by weight, with respect to 100 parts of (a)+(b), one or more inorganic and/or organic rigid fillers; and d) a silanic compound with a compatibilizing function.

Abstract: Method to determine a material having characteristics of heat regulation, said material being able to be used in the design of footwear, body suits, head-covers, padding, gloves or other garments which can be associated with parts of the human body. Said method provides to calculate at least the value of heat conductivity (&agr;) of said material able to provide desired conditions of thermophysiological comfort, starting from contour conditions and from at least a value of heat conductivity assumed as initial value, the method providing to use said initial value of conductivity (&agr;0) to calculate the microclimatic conditions to which the part of the body concerned is subject, and to modify with an iterative process said initial value of conductivity (&agr;0) until said microclimatic conditions converge towards a pre-defined condition of thermophysiological comfort.

Abstract: Reinforced polyolefinic thermoplastic composition comprising a polyolefin, a carbonate of a metal appertaining to IIa Group of the Periodic System and a maleamic silane having general formula: ##STR1## wherein R and R.sub.1 are hydrogen or an alkyl radical; R.sub.2 is an alkoxy hydrolysable group or a halogen atom; R.sub.3 is an alkyl radical having from 1 to 8 carbon atoms; X may be a radical of formula: ##STR2## or an aromatic, cycloaliphatic o heterocyclic divalent radical.