摘要:
The invention provides a composition exhibiting improved impact resistance at low levels of impact modifier. The composition comprises a polyhydroxyalkanoic acid and: (A) an elastomeric compound of core-shell type wherein the amount of (A) is from 0.1 to 6% by mass of the composition; and (B) and an olefinic copolymer comprising an ethylenic monomer bearing an epoxy function; wherein the amount of (B) is from 0.01 to 0.6% by mass of the composition and the mass ratio of (A)/(B) is from 85/15 to 99.5/0.5.
摘要:
A method for manufacturing a thermoplastic composition including: a polyester resin (c); a mixture including a copolymer (a) of an α-olefin and of a monomer having an ethylenic unsaturation and an epoxy function, as well as a core-shell compound (b); characterized in that said method includes a first step of manufacture the mixture of (a) and (b) by extrusion at a temperature at which the copolymer (a) is in the molten state and at a maximum temperature of 60 to 180° C.; a second step of manufacturing the thermoplastic composition by extrusion or by mixing the polyester resin (c) with the mixture of (a) and (b) produced in the first step.
摘要:
The invention provides a composition exhibiting improved impact resistance at low levels of impact modifier. The composition comprises a polyhydroxyalkanoic acid and: (A) an elastomeric compound of core-shell type wherein the amount of (A) is from 0.1 to 6% by mass of the composition; and (B) and an olefinic copolymer comprising an ethylenic monomer bearing an epoxy function; wherein the amount of (B) is from 0.01 to 0.6% by mass of the composition and the mass ratio of (A)/(B) is from 85/15 to 99.5/0.5.