Abstract: Described herein are polyoxymethylene (POM) compositions comprising polyoxymethylene and styrene maleic anhydride (SMA) copolymers or modified SMA copolymers, said POM compositions exhibiting improved physical properties such as heat deflection temperatures compared to POM compositions which do not comprise SMA copolymers.

Abstract: Described herein are polyoxymethylene (POM) compositions comprising polyoxymethylene and styrene maleic anhydride (SMA) copolymers or modified SMA copolymers, said POM compositions exhibiting improved physical properties such as heat deflection temperatures compared to POM compositions which do not comprise SMA copolymers.

Abstract: Polyoxymethylene compositions, articles comprising these compositions, and processes of making the compositions, comprising: a) at least one polyoxymethylene polymer; b) about 0.1 to about 5 wt. % of poly alpha-1,3-glucan having a d90 particle size of 50 microns or less; c) optionally, at least one additive selected from the group consisting of nucleating agents, waxes, ultraviolet stabilizers, colorants, antioxidants, formaldehyde scavengers, lubricants, and mixtures of these; wherein an article molded from said polyoxymethylene composition exhibits a formaldehyde emission of 1 weight percent or less when measured according to TEF test method.

Abstract: Polyoxymethylene compositions, articles comprising these compositions, and processes of making the compositions, comprising: a) at least one polyoxymethylene polymer; b) about 0.1 to about 5 wt. % of poly alpha-1,3-glucan having a d90 particle size of 50 microns or less; c) optionally, at least one additive selected from the group consisting of nucleating agents, waxes, ultraviolet stabilizers, colorants, antioxidants, formaldehyde scavengers, lubricants, and mixtures of these; wherein an article molded from said polyoxymethylene composition exhibits a formaldehyde emission of 1 weight percent or less when measured according to TEF test method.

Abstract: Polyoxymethylene compositions, articles comprising these compositions, and processes of making the compositions, comprising: a) at least one polyoxymethylene polymer; b) about 0.1 to about 5 wt. % of poly alpha-1,3-glucan having a d90 particle size of 50 microns or less; c) optionally, at least one additive selected from the group consisting of nucleating agents, waxes, ultraviolet stabilizers, colorants, antioxidants, formaldehyde scavengers, lubricants, and mixtures of these; wherein an article molded from said polyoxymethylene composition exhibits a formaldehyde emission of 1 weight percent or less when measured according to TEF test method.

Abstract: Provided are thermoplastic composites having improved flexural properties.

Abstract: Polyoxymethylene compositions with polyoxymethylene polymers polymer/polyol additives having a core-link-arm structure. Upon molding, these compositions exhibit stable melt viscosity and simultaneous improvement in notched Izod impact strength and/or decreased relative apparent capillary melt viscosity, and/or increased elongation at break, relative to polyoxymethylene compositions lacking such core-link-arm structure additives.

Abstract: Compositions comprising polyoxymethylene polymers and at least one organopolysiloxane polymer. Adding organopolysiloxane polymers to polyoxymethylene polymers provides compositions that exhibit at least a 50 percent reduction in melt viscosity compared to the melt viscosity of an identical, melted composition lacking the organopolysiloxane polymer, and promote easier molding of the compositions into complex article shapes.

Abstract: Processes for improving melt flow properties of molten compositions with polyoxymethylene polymers and polymer/polyol additives having a certain core-link-arm structure, which include: obtaining melt viscosity stability while improving notched Izod, decreasing relative apparent capillary melt viscosity, and increasing elongation at break relative to molten compositions of polyoxymethylene polymers without the polymer/polyol additives.

Abstract: Processes for improving melt flow properties of molten compositions with polyoxymethylene polymers and polymer/polyol additives having a certain core-link-arm structure, which include: obtaining melt viscosity stability while improving notched Izod, decreasing relative apparent capillary melt viscosity, and increasing elongation at break relative to molten compositions of polyoxymethylene polymers without the polymer/polyol additives.

Abstract: Polyoxymethylene compositions with polyoxymethylene polymers polymer/polyol additives having a core-link-arm structure. Upon molding, these compositions exhibit stable melt viscosity and simultaneous improvement in notched Izod impact strength and/or decreased relative apparent capillary melt viscosity, and/or increased elongation at break, relative to polyoxymethylene compositions lacking such core-link-arm structure additives.

Abstract: Described herein are compositions comprising (a) 92 to 99 weight percent, of polyoxymethylene with number average molecular weight from 65,000 to 250,000 g/mole; and (b) 1 to 8 weight percent of an imidized acrylic resin obtained by treating an acrylic polymer with a monoalkyl amine, wherein the weight percents of a and b are based on their combined weight, and monoalkyl group has from one to five carbon atoms, the degree of imidization is 20% to 100% and the acid level is from 0 to about 2 weight percent of the imidized acrylic resin. The composition has significantly higher heat deflection temperature than the neat polyoxymethylene. Processes of increasing heat deflection temperature of POM compositions described herein by blending (a) and (b), wherein the resultant melt-mixed composition has a 200% increase or greater in time to 5% creep strain relative to the same melt-mixed composition lacking (b).

Abstract: Described herein are compositions comprising (a) 92 to 99 weight percent, of polyoxymethylene with number average molecular weight from 65,000 to 250,000 g/mole; and (b) 1 to 8 weight percent of an imidized acrylic resin obtained by treating an acrylic polymer with a monoalkyl amine, wherein the weight percents of a and b are based on their combined weight, and monoalkyl group has from one to five carbon atoms, the degree of imidization is 20% to 100% and the acid level is from 0 to about 2 weight percent of the imidized acrylic resin. The composition has significantly higher heat deflection temperature than the neat polyoxymethylene. Processes of increasing heat deflection temperature of POM compositions are described herein by blending (a) and (b), wherein the resultant melt-mixed composition has a 200% increase or greater in time to 5% creep strain relative to the same melt-mixed composition lacking (b).

Abstract: Described herein are compositions comprising (a) 92 to 99 weight percent, of polyoxymethylene with number average molecular weight from 65,000 to 250,000 g/mole; and (b) 1 to 8 weight percent of an imidized acrylic resin obtained by treating an acrylic polymer with a monoalkyl amine, wherein the weight percents of a and b are based on their combined weight, and monoalkyl group has from one to five carbon atoms, the degree of imidization is 20% to 100% and the acid level is from 0 to about 2 weight percent of the imidized acrylic resin. The composition has significantly higher heat deflection temperature than the neat polyoxymethylene. Processes of increasing heat deflection temperature of POM compositions are described herein by blending (a) and (b), wherein the resultant melt-mixed composition has a 200% increase or greater in time to 5% creep strain relative to the same melt-mixed composition lacking (b).

Abstract: Processes of making articles of a melt mixed polyoxymethylene composition comprising polyoxymethylene polymer and polyoxymethylene terpolymer in which the melt mixed composition is maintained above the crystallization temperature of the polyoxymethylene polymer. Such processes impart improved creep resistance compared to that of articles made of the same melt mixed composition but which has been cooled below crystallization temperature of the polyoxymethylene polymer during manufacture. These articles are useful for making plastic gears having high heat resistance.

Abstract: Thermoplastic compositions comprising (a) 87 to 30 weight percent of polyacetal homopolymer, copolymer, or a combination of these; (b) 10 to 60 wt % of one or more cellulose ester(s) of C1 to C6 alkyl carboxylic acids; and (c) 3-15 wt % of at least one toughener

Abstract: Polyacetal composition comprising polyacetal, ultrahigh molecular weight polyethylene, and a compatibilizer comprising ethylene/vinyl acetate copolymer and, optionally, at least one epoxy-containing compound.

Abstract: Disclosed herein are polyoxymethylene blends having excellent fatigue resistance comprising at least one polyoxymethylene homopolymer having a number average molecular weight of at least about 100,000 and at least one polyoxymethylene homopolymer having a number average molecular weight between about 15,000 and about 30,000.

Abstract: Composition comprising high molecular weight polyacetal and ultrahigh molecular weight polyethylene having improved wear resistance, high melt viscosity, and good mechanical properties. Articles comprising the compositions are disclosed.

Abstract: Process for preparing shaped articles from a powder comprising high molecular weight polyacetal and, optionally, non-melt processable polymer. Sintering the powder under heat and pressure in a batch or continuous process forms the articles.