Modified polyamide composition containing at least one phenolic compound
The use of a phenolic compound for producing a modified polyamide having enhanced mechanical properties is described. A polyamide composition including at least such phenolic compound and optionally reinforcing or filler loads is also described. The composition is preferably a composition for molding, for example in the form of granules or powder, that can be used for the production of articles by injection-molding.
1. A polyamide composition comprising at least one polymeric phenolic compound comprising at least units of formula (I):
in which R is a hydrogen atom or a linear or branched alkyl group comprising from 1 to 20 carbon atoms and optionally comprising heteroatoms, m is from 6 to 15 and n is from 5 to 22.
2. The composition as defined by claim 1 , comprising from 1% to 20% by weight of phenolic compound, with respect to the total weight of the composition.
3. The composition as defined by claim 1 comprising from 30% to 95% by weight of polyamide, with respect to the total weight of the composition.
4. The composition as defined by claim 1 comprising reinforcing or bulking fillers.
5. The composition as defined by claim 1 comprising agents which modify the impact strength.
6. The polyamide composition as defined by claim 1 , wherein m is from 8 to 12.
7. The polyamide composition as defined by claim 1 , wherein n is from 10 to 15.
8. The polyamide composition as defined by claim 1 , wherein the at least one polymeric phenolic compound further comprises units of formula (II):
in which R′ is a hydrogen atom or a linear or branched alkyl group comprising from 1 to 20 carbon atoms and optionally comprising heteroatoms, and o is from 6 to 15.
9. The polyamide composition as defined by claim 1 , said at least one polymeric phenolic compound having a molecular weight of from 1500 g/mol to 3000 g/mol.
10. A method of preparing a molded or extended article, the method comprising forming the molded or extruded article with a polyamide composition as defined by claim 1 .
11. A molded or extruded article comprising a polyamide composition as defined by claim 1 .