US 8,410,216 B2 · Impact-resistant composition based on a polyamide resin and on a blend of at least one graft copolymer with polyamide blocks and a low-density ethylene polymer

Abstract

The invention relates to a composition based on an impact-resistant thermoplastic polyamide resin, comprising, as a blend—from 60 to 98 wt % of polyamide resin (A) and—from 2 to 40 wt % of a blend of at least one graft copolymer with polyamide blocks (B) composed of a polyolefin backbone and at least one polyamide graft in which the grafts are attached to the backbone by the residues of an unsaturated monomer (X) having a functional group capable of reacting with an amine-terminated polyamide, the residues of the unsaturated monomer (X) being attached to the backbone by grafting or copolymerization via its double bond, and of a non-reactive ethylenic polymer (C) that is miscible with (B) and has a density of below 0.960 g/cm3.

Claims12

Dependent claims

Composition based on an impact-resistant polyamide thermoplastic resin, comprising, as a blend:

from 60 to 98% by weight of polyamide resin (A) and
from 2 to 40% by weight of a blend of at least one polyamide grafted ethylene copolymer (B) composed of a polyolefin backbone and of at least one polyamide graft in which the grafts are attached to the backbone by the residues of an unsaturated monomer (X) having a functional group capable of reacting with an amine-terminated polyamide, the residues of the unsaturated monomer (X) being attached to the backbone by grafting or copolymerization via its double bond, and of a non-reactive ethylenic polymer (C) that is miscible with (B), has a density of 0.87 g/cm3 or less and comprises at least 50 mole percent of ethylene.

Dependencies are inferred from the claim text.

Facts

Application

12/445,082Filed 11 Oct 2007

Priority

FR 06 5425012 Oct 2006

Published

US 2010/0137516 A13 Jun 2010

Granted

2 Apr 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

C08L 77/00
Compositions of polyamides obtained by reactions forming a carboxylic amide link in
C08G 81/028
Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G: containing polyamide sequences
C08L 23/0853
With unsaturated hydrocarbons containing atoms other than carbon or hydrogen: ethylene vinyl acetate copolymers
C08L 23/0869
With unsaturated hydrocarbons containing atoms other than carbon or hydrogen: with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated…

Impact-resistant composition based on a polyamide resin and on a blend of at least one graft copolymer with polyamide blocks and a low-density ethylene polymer

Life of this patent

Impact-resistant composition based on a polyamide resin and on a blend of at least one graft copolymer with polyamide blocks and a low-density ethylene polymer

Life of this patent

Abstract

Claims12