Crystalline polyamide-type resin composition
The invention provides a crystalline polyamide-type resin composition comprises (a) a crystalline polyamide resin composition comprising (i) 50 to 90% by weight of crystalline polyamide resin (A) having a relative viscosity in 96% sulfuric acid of not less than 3.5 and (ii) 50 to 10% by weight of a crystalline polyamide resin (B) having a melting point lower than the melting point of polyamide resin (A) by 20° C. or more and a relative viscosity dissolved in 96% sulfuric acid of not more than 3.6, and (b) 1 to 10 part(s) by weight of a modified polyolefin resin (C) having a reactive functional group being able to react with the terminal group and/or main-chain amide group of the polyamide resin. The invention also provides a door checker for automobiles prepared from the crystalline polyamide-type resin composition.
1. A crystalline polyamide-type resin composition comprising
(a) 100 parts by weight of a crystalline polyamide resin composition comprising
(i) 50 to 90% by weight of Nylon 66, wherein the relative viscosity of Nylon 66 dissolved in 96% sulfuric acid is between 3.5 and 5.0 and
(ii) 50 to 10% by weight of a Nylon 6 or m-xylylene adipamide, wherein the melting point of Nylon 6 or m-xylylene adipamide is lower than the melting point of Nylon 66 by 20° C. or more, and wherein the relative viscosity of Nylon 6 or m-xylylene adipamide dissolved in 96% sulfuric acid is between 2.0 and 3.6,
(b) 1to 10part(s) by weight of a modified polyolefin resin (C) having a reactive functional group being able to react with the terminal group and/or main-chain amide group of the polyamide resin.
2. The crystalline polyamide-type resin composition of claim 1 , wherein the modified polyolefin resin (C) having a reactive functional group being able to react with the terminal group and/or main-chain amide group of the polyamide resin is a modified polyethylene resin.
3. A door checker for automobiles, wherein the door checker is prepared from the crystalline polyamide-type resin composition of claim 1 .
4. A door checker for automobiles, wherein the door checker is prepared from the crystalline polyamide-type resin composition of claim 2 .