Polyamides modified with (per)fluoropolyether segments
AssigneeSolvay Specialty Polymers Italy S.P.A.
InventorsClaudio Adolfo Pietro Tonelli, Ivan Wlassics, Giuseppe Marchionni, Sanjay Gurbasappa Charati, Ritu Ahuja, Gourav Upadhyay
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Abstract
The present invention relates to thermoplastic polyamides (PA) comprising recurring units derived from a PFPE dicarboxylic acid (PFPA-DA) or a PFPE diamine (PFPE-NN) in a defined weight amount with respect to other units derived from the other monomers used in the course of polymerization. Polyamides (PA) are endowed with improved surface properties, chemical resistance and reduced brittleness and do not require the addiction of impact modifiers.
Claims20
A polyamide (PA) consisting of recurring units derived from monomers (A) and (B), wherein monomer (A) is selected from at least one of:
- (i) a mixture of:
- one or more hydrogenated aliphatic, cycloaliphatic or aromatic diamine(s) [amine (NN)] or derivative(s) thereof;
- and
- one or more hydrogenated aliphatic, cycloaliphatic or aromatic dicarboxylic acid(s) [acid (DA)] or derivative(s) thereof;
- and
- (ii) one or more aminoacid(s) [aminoacid (AN)] or lactam(s) [lactam (L)], and wherein monomer (B) is at least one (per)fluoropolyether monomer (PFPE-M) selected from a PFPE-diamine (PFPE-NN) and PFPE-dicarboxylic acid (PFPE-DA), wherein the amount of monomer (B) ranges from 0.1 to 10% wt with respect to the overall weight of monomers (A) and (B).
Dependencies are inferred from the claim text.