Recycled thermoplastic with toughener
View Patent ↗Disclosed is a thermoplastic composition including a) a recycled thermoplastic including polyamide resin, polyolefin and mineral filler, wherein the recycled thermoplastic includes at least 60 weight percent content of recycled polyamide selected from the group consisting of polyamide 66, polyamide 6, blends of polyamide 66 and polyamide 6, and copolymers having repeat units of polyamide 66 and polyamide 6; and at least 1 weight percent content of polyolefin; b) polymer toughener, wherein the polymer toughener includes at least 50 to 85 weight percent non-functionalized rubber and 15 to 50 weight percent of a functionalized rubber; and c) 10 to 50 reinforcing agent having a minimum aspect ratio of 3; and molded articles manufactured therefrom.
1. A thermoplastic composition comprising
a) 20 to 80 weight percent of a recycled thermoplastic composition comprising polyamide resin, polypropylene and mineral filler, wherein said recycled thermoplastic composition comprises at least 60 weight percent content of recycled polyamide selected from the group consisting of polyamide 66, polyamide 6, blends of polyamide 66 and polyamide 6, and copolymers having repeat units of polyamide 66 and polyamide 6; and at least 1 weight percent content of polypropylene, and wherein said recycled polyamide content is equal to the percent nitrogen content as compared to the nitrogen content of a pure polyamide 66 standard, said nitrogen content being determined by a Nitrogen Combustion Analysis Determination Method; and said polypropylene content is as determined by subtraction of the polyamide content and mineral filler content, as determined from Nitrogen combustion analysis and Ash Analysis, respectively, from the total weight of recycled thermoplastic;
b) 5 to 20 weight percent of polymer toughener, wherein said polymer toughener consists essentially of at least 50 to 85 weight percent non-functionalized rubber and 15 to 50 weight percent of a functionalized rubber;
c) 10 to 50 weight percent reinforcing agent having a minimum aspect ratio of 3;
d) 0 to 40 weight percent of virgin polyamide 66 and/or post industrial polyamide 66 comprising greater than 98 weight percent polyamide 66; and
e) 0 to 10 weight percent of additives selected from the group consisting of mold release, flow enhancers, thermal stabilizers, antistatic agents, blowing agents, lubricants, plasticizers, and colorant and pigments;
wherein the weight percents of a), b), c), d) and e) are based on the total weight of the thermoplastic resin composition.
2. The thermoplastic composition of claim 1 wherein said non-functionalized rubber is selected from the group consisting of ethylene/alpha olefin copolymer and ethylene/propylene/diene terpolymer.
3. The thermoplastic composition of claim 1 wherein the reinforcing agent is glass fiber.
4. The thermoplastic composition of claim 1 wherein the recycled polyamide is polyamide 66.