Abstract: The invention relates to improved polyacetal compositions composed of polyoxymethylene (component A) and a stabilized MBS core shell graft copolymer (component B) formed from a rubber-elastic core based on polybutadiene, and a hard graft shell.The stabilized MBS core shell graft copolymer (component B) contains a special stabilization formulation of at least one hindered phenol, a phosphite, a sulfide, and a pH buffer system.The shaped articles produced from these mixtures are particularly distinguished by an excellent low-temperature impact strength and a good heat aging performance.

Abstract: Polymer melt blends of a homopolymer of propylene or a copolymer of propylene with up to 40 weight percent of another monoolefin, with a homopolymer of one or more of a C.sub.10 to C.sub.30 alkyl (meth)acrylate or a copolymer containing at least 70 weight percent of the one or more C.sub.10 to C.sub.30 ester of an alkyl (meth)acrylate with up to 30 weight percent of one or more of a C.sub.1 to C.sub.9 alkyl (meth)acrylate, the homopolymer or copolymer having a weight-average molecular weight of at least 670,000, exhibit a relative characteristic time, as herein described, at least five (5) times that for the unmodified homo- or copolymer of polypropylene, and a melt strength ratio (as judged by relative sag resistance) at least 5 times that of the unmodified homo- or copolymer of polypropylene. Such blends are useful in thermoforming operations wherein sheet is thermoformed into cartons, containers, appliance housings, and the like.

Abstract: The invention relates to improved thermoplastic compositions composed of one or more thermoplastics (component A), and a stabilized MBS core shell graft copolymer (component B) formed from a rubber-elastic core based on polybutadiene, and a hard graft shell.The stabilized MBS core shell graft copolymer (component B) contains a special stabilization formulation of at least one hindered phenol, a phosphite, an organic sulfide, and optionally a pH buffer system. The stabilized MBS core shell graft copolymer improves the impact strength and heat aging properties of thermoplastic compositions and polyacetal compositions.The shaped articles produced from the improved thermoplastic compositions are particularly distinguished by an excellent high-temperature impact strength and a good heat aging performance.

Abstract: Acrylic polymers having a minimum molecular weight of about 500,000, and preferably of about 1,500,000, are blended at levels of from 1 to 25% with thermoplastic resins to improve the melt rheology of the thermoplastic resins and facilitate blow molding, thermoforming, extrusion and similar processes.

Abstract: Melt strengths and melt viscosities of aromatic polyesters are increased substantially by the addition of small amounts of certain high molecular weight vinyl aromatic modifiers which disperse very readily in aromatic polyesters.

Abstract: Vinyl aromatic polymers having a minimum molecular weight of about 500,000, and preferably of about 1,500,000, are blended at levels of from about 1 to about 25% with thermoplastic resins to improve the melt rheology of the thermoplastic resins and facilitate blow molding, thermoforming, extrusion and similar processes.

Abstract: Melt strengths and melt viscosities of aromatic polyesters are increased substantially by the addition of small amounts of certain high molecular weight vinyl aromatic modifiers which disperse very readily in aromatic polyesters.

Abstract: The invention is directed to stabilizer compositions, to polymers containing these stabilizer compositions for use as additives in polymeric matrices, and to polymeric products which contain these additives. The stabilizer compositions comprise a ternary composition of a sterically hindered phenol, a less sterically hindered phenol, and an organic phosphite. These compositions are admixed with polymers to provide polymeric additives to improve the physical and mechanical properties of polymeric matrices.

Abstract: The invention is directed to stabilizer compositions, to polymers containing three stabilizer compositions for use as additives in polymers, and to polymeric products which contain these additives. The stabilizer compositions comprise a compositon of: a) at least two hindered phenols and b) a sulfide. These compositions are admixed with polymers to provide polymeric additives to improve the physical and mechanical properties of polymers matrices.

Abstract: Vinyl aromatic polymers having a minimum molecular weight of about 500,000, and preferably of about 1,500,000, are blended at levels of from about 1 to about 25% with thermoplastic resins to improve the melt rheology of the thermoplastic resins and facilitate blow molding, thermoforming, extrusion and similar processes.

Abstract: Compositions comprising polyethylene terephthalate and an additive to promote crystallization rate and improve surface appearance selected from the group consisting of monomeric esters of citric acid and epoxidized esters of unsaturated aliphatic carboxylic acids. Compositions comprising polyethylene terephthalate, poly (C.sub.4 -C.sub.6) terephthalate, and a surface appearance and crystallization rate improving additive selected from the group consisting of monomeric esters of citric acid, organic esters of an aromatic carboxylic acid of 7 to 11 carbon atoms containing at least one carboxyl group per aromatic nucleus and an alcohol, oligomeric polyesters, and epoxidized esters of unsaturated aliphatic carboxylic acids.

Abstract: A tie coating composition comprising a polymer or copolymer of an alkyl methacrylate and a flow improver dissolved in an organic solvent system is applied to a polycarbonate substrate prior to applying a silicone or siloxane-based abrasion resistant coating.