Thermoplastic resin composition having improved resistance to hydrolysis
View Patent ↗A thermoplastic resin composition composed of a thermoplastic resin and a polyamide elastomer in which the polyamide elastomer contains at least 50 weight % of a polyetheramide elastomer prepared by polymerization of a tri-block polyetherdiamine compound, a polyamide-forming monomer is an aminocarboxylic acid and/or a lactam compound, and a dicarboxylic acid compound, in which the tri-block polyetherdiamine compound has the formula (1): [each of x and y is an integer of 1 to 20, and y is an integer of 4 to 50].
1. A thermoplastic resin composition comprising a mixture of a thermoplastic resin and a polyamide elastomer wherein the polyamide elastomer contains at least 50 weight % of a polyetheramide elastomer prepared by polymerization of a tri-block polyetherdiamine compound, a polyamide-forming monomer selected from the group consisting of an aminocarboxylic acid and a lactam compound, and a dicarboxylic acid compound, the tri-block polyetherdiamine compound having the following formula (1):
in which each of x and z independently represents an integer of 1 to 20, and y represents an integer of 4 to 50.
2. The thermoplastic resin composition of claim 1 , wherein the mixture comprises 95 to 50 weight % of the thermoplastic resin and 5 to 50 weight % of the polyamide elastomer.
3. The thermoplastic resin composition of claim 1 , wherein the thermoplastic resin is polyamide.
4. The thermoplastic resin composition of claim 1 , wherein the dicarboxylic acid is oxalic acid or has the following formula (2):
HOOC—(R 1 ) m —COOH (2)
in which R 1 is a linking group containing a hydrocarbon chain.
5. The thermoplastic resin composition of claim 4 , wherein the dicarboxylic acid is selected from the group consisting of an aliphatic dicarboxylic acid and an alicyclic dicarboxylic acid.
6. The thermoplastic resin composition of claim 1 , wherein the polyamide-forming monomer is an aminocarboxylic acid having the following formula (3) or a lactam compound having the following formula (4):
H 2 N—R 2 —COOH (3)
—R 3 —CONH— (4)
in which each of R 2 and R 3 independently is a linking group having a hydrocarbon chain.
7. The thermoplastic resin composition of claim 1 , wherein the resin composition further comprises a plasticizer in an amount of 1 to 30 weight parts based on 100 weight parts of the mixture.
8. A thermoplastic article comprising the thermoplastic resin composition of claim 7 .
9. The thermoplastic resin composition of claim 1 , wherein the resin composition further comprises a flame retardant in an amount of 5 to 40 weight parts based on 100 weight parts of the mixture.
10. A thermoplastic article comprising the thermoplastic resin composition of claim 9 .
11. A thermoplastic article comprising the thermoplastic resin composition of claim 1 .
12. A thermoplastic resin composition comprising a thermoplastic resin and a polyamide elastomer wherein the polyamide elastomer contains at least 50 weight % of a polyetheramide elastomer comprising 15 to 80 weight % of the following polyether segment (5):
in which each of x and z independently represents an integer of 1 to 20, and y represents an integer of 4 to 50.
13. A thermoplastic article comprising the thermoplastic resin composition of claim 12 .