Reinforced thermoplastic compound with chemical resistance
AssigneeSabic Global Technologies B.V.
InventorsXiaoyu Sun, Yuanqing He
Life of this patent
Estimating the term…
Abstract
Disclosed herein are blended thermoplastic compositions comprising at least one polycarbonate component, at least one polybutylene component, at least one polyester ether elastomer component, at least one poly(ethylene-co-ethylacrylate) component, at least one ethylene/alkyl acrylate/glycidyl methacrylate terpolymer component, and at least one glass fiber component. The thermal blended polycarbonate compositions can optionally further comprise a transesterification quenching agent and/or epoxy hydrostabilizer agent. The resulting compositions can be used in the manufacture of articles requiring materials that have high impact strength yet have very high stiffness, while retaining desired dielectric properties and are colorable from white to black.
Claims33
A blended thermoplastic composition comprising:
- a) from about 5 wt % to about 25 wt % of a polycarbonate component;
- b) from about 20 wt % to about 55 wt % of a polybutylene terephthalate component;
- c) from about 0.1 wt % to about 5 wt % of a polyester compatibilizer component;
- d) from about 0.1 wt % to about 5 wt % of an acrylic impact modifier component;
- e) from about 0.1 wt % to about 3 wt % of an ethylene/alkyl acrylate/glycidyl methacrylate terpolymer compatibilizer component;
- and
- f) from about 10 wt % to about 60 wt % of a glass fiber component;
- wherein the wt % ratio of the polycarbonate component to polybutylene terephthalate component is less than or equal to about 0.5;
- wherein the blended thermoplastic composition is chemically resistant;
- wherein the combined weight percent value of all components does not exceed about 100 wt %;
- and
- wherein all weight percent values are based on the total weight of the composition.
A chemically resistant blended thermoplastic composition comprising:
- a) from about 5 wt % to about 25 wt % of a polycarbonate component;
- b) from about 20 wt % to about 55 wt % of a polybutylene terephthalate component;
- c) from about 0.1 wt % to about 5 wt % of a polyester compatibilizer component;
- d) from about 0.1 wt % to about 5 wt % of an acrylic impact modifier component;
- e) from about 0.1 wt % to about 3 wt % of an ethylene/alkyl acrylate/glycidyl methacrylate terpolymer compatibilizer component;
- and
- f) from about 10 wt % to about 60 wt % of a glass fiber component;
- wherein the wt % ratio of the polycarbonate component to polybutylene terephthalate component is less than or equal to about 0.5;
- wherein the combined weight percent value of all components does not exceed about 100 wt %;
- wherein all weight percent values are based on the total weight of the composition;
- wherein a molded sample of the blended thermoplastic composition has notched Izod impact strength greater than or equal to about 140 J/m when determined in accordance with ASTM D256;
- and
- wherein a molded sample of the blended thermoplastic composition has a dielectric constant less than or equal to about 4.0.
A method of improving the impact strength and dielectric constant of a blended thermoplastic composition, the method comprising the step of combining;
- a) from about 5 wt % to about 25 wt % of a polycarbonate component;
- b) from about 20 wt % to about 55 wt % of a polybutylene terephthalate component;
- c) from about 0.1 wt % to about 5 wt % of a polyester compatibilizer component;
- d) from about 0.1 wt % to about 5 wt % of an acrylic impact modifier component;
- e) from about 0.1 wt % to about 3 wt % of a polycarbonate an ethylene/alkyl acrylate/glycidyl methacrylate terpolymer compatibilizer component;
- and
- f) from about 10 wt % to about 60 wt % of a glass fiber component;
- wherein the wt % ratio of the polycarbonate component to polybutylene terephthalate component is less than or equal to about 0.5;
- wherein the combined weight percent value of all components does not exceed about 100 wt %;
- wherein all weight percent values are based on the total weight of the composition.
A chemically resistant blended thermoplastic composition comprising:
- a) from about 5 wt % to about 25 wt % of a polycarbonate component;
- b) from about 20 wt % to about 55 wt % of a polybutylene terephthalate component;
- c) from about 0.1 wt % to about 5 wt % of a polyester compatibilizer component;
- d) from about 0.1 wt % to about 5 wt % of an acrylic impact modifier component;
- e) from about 0.1 wt % to about 3 wt % of an ethylene/alkyl acrylate/glycidyl methacrylate terpolymer compatibilizer component;
- and
- f) from about 10 wt % to about 40 wt % of a glass fiber component;
- wherein the wt % ratio of the polycarbonate component to polybutylene terephthalate component is less than or equal to about 0.5;
- wherein the combined weight percent value of all components does not exceed about 100 wt %;
- wherein a molded sample of the blended thermoplastic composition has a dielectric constant less than or equal to about 3.5 when tested in accordance with ASTM D2520.
Dependencies are inferred from the claim text.