Abstract:
Production of organometallic compounds of sodium and potassium with alkylaromatic hydrocarbons (X) by reaction of the metal with a monochloride of a hydrocarbon (Y) and reaction of the organometallic compound formed with the alkylaromatic hydrocarbon (X). A fine dispersion of the metal in the alkylaromatic hydrocarbon (X) is first prepared by stirring a mixture of molten metal and hydrocarbon (X) in the presence of a dispersing agent; then the monochloride of the hydrocarbon (Y) is slowly added. The sodium or potassium compounds may be used for organometallic reactions or as monofunctional polymerization catalysts.
Abstract:
PURPOSE: To make it possible to recycled use as well as obtain good durability, shock resistance, mechanical properties and surface property by constituting a composite molding using a propylene polymer as a main body and making a polymer adhere to both sides of a foamed core with a hot-melt adhesive layer. CONSTITUTION: This shock-absorbing propylene polymer composite molding comprises: (a) a layer with a thickness of 0.5 to 10 mm containing a propylene polymer having a melting point of 130 to 165 deg.C, (b) an intermediate layer with a thickness of 0.05 to 0.5 mm containing a hot-melt adhesive of olefin copolymer having a melting point of 90 to 140 deg.C as a main body, (c) a foamed layer with a thickness of 3 to 200 mm containing a propylene copolymer having a melting point of 125 to 155 deg.C as a main body and a density of 0.015 to 0.1 g/cm , (d) an intermediate layer with a thickness of 0.05 to 0.5 mm containing a hot-melt adhesive of olefin copolymer having a melting point of 90 to 140 deg.C as a main body, and (e) a layer with a thickness of 0.5 to 10 mm containing a propylene polymer having a melting point of 130 to 165 deg.C.
Abstract:
Shock-absorbing propylene polymer composite moulded articles containing …… a. a layer of thickness 0.5 to 10 mm, containing a propylene polymer of melting point 130 to 165 DEG C, … b. an intermediate layer of thickness 0.05 to 0.5 mm of a melt adhesive based on an olefin copolymer of melting point 90 to 140 DEG C, … c. a foam layer of thickness 3 to 200 mm having a density of 0.015 to 0.1 g/cm based on a propylene copolymer of melting point 125 to 155 DEG C, … d. an intermediate layer of thickness 0.05 to 0.5 mm of a melt adhesive based on an olefin copolymer of melting point 90 to 140 DEG C, … e. a layer of thickness 0.5 to 10 mm containing a propylene polymer of melting point 130 to 165 DEG C. …
Abstract:
Shock-absorbing propylene polymer composite moulded articles containing …… a. a layer of thickness 0.5 to 10 mm, containing a propylene polymer of melting point 130 to 165 DEG C, … b. an intermediate layer of thickness 0.05 to 0.5 mm of a melt adhesive based on an olefin copolymer of melting point 90 to 140 DEG C, … c. a foam layer of thickness 3 to 200 mm having a density of 0.015 to 0.1 g/cm based on a propylene copolymer of melting point 125 to 155 DEG C, … d. an intermediate layer of thickness 0.05 to 0.5 mm of a melt adhesive based on an olefin copolymer of melting point 90 to 140 DEG C, … e. a layer of thickness 0.5 to 10 mm containing a propylene polymer of melting point 130 to 165 DEG C. …
Abstract:
Mixtures of polystyrene and a block copolymer of a monovinyl-aromatic compound and a conjugated diene. The mixture contains a thermoplastic, non-elastomeric block copolymer having a star-shaped branched structure, the branches being of at least two types of different average composition, and at least 50% by weight of the monovinyl-aromatic compound being present as terminal polymer blocks in one or more of the branches. The mixtures, which exhibit good transparency and high impact strength, are particularly suitable for the manufacture of moldings and packaging materials.
Abstract:
Branched block copolymers of from 60 to 95 per cent by weight of a monovinyl-aromatic compound and from 40 to 5 per cent by weight of a conjugated diene. The branched block copolymers have a structure of the general formula (A1-A2-B?A3)n-X-(A3?B-A2)m where the A's are non-elastomeric polymer segments based on the monovinyl-aromatic compound, the B's are elastomeric polymer segments based on the conjugated diene, X is the radical of an at least trifunctional coupling agent and n and m are numbers. The branched block copolymers may be used for the manufacture of highly transparent impact-resitant shaped articles, especially packaging materials.
Abstract:
Impact-resistant thermoplastic molding compositions containing from 70 to 98 percent by weight of a polyoxymethylene and from 30 to 2 percent by weight of a block copolymer of the general formula A - B - A, wherein A is a polyalkylene oxide block and B is a diene polymer block.
Abstract:
Shock-absorbing propylene polymer composite moulded articles containing …… a. a layer of thickness 0.5 to 10 mm, containing a propylene polymer of melting point 130 to 165 DEG C, … b. an intermediate layer of thickness 0.05 to 0.5 mm of a melt adhesive based on an olefin copolymer of melting point 90 to 140 DEG C, … c. a foam layer of thickness 3 to 200 mm having a density of 0.015 to 0.1 g/cm based on a propylene copolymer of melting point 125 to 155 DEG C, … d. an intermediate layer of thickness 0.05 to 0.5 mm of a melt adhesive based on an olefin copolymer of melting point 90 to 140 DEG C, … e. a layer of thickness 0.5 to 10 mm containing a propylene polymer of melting point 130 to 165 DEG C. …
Abstract:
Shock-absorbing propylene polymer composite moulded articles containing …… a. a layer of thickness 0.5 to 10 mm, containing a propylene polymer of melting point 130 to 165 DEG C, … b. an intermediate layer of thickness 0.05 to 0.5 mm of a melt adhesive based on an olefin copolymer of melting point 90 to 140 DEG C, … c. a foam layer of thickness 3 to 200 mm having a density of 0.015 to 0.1 g/cm based on a propylene copolymer of melting point 125 to 155 DEG C, … d. an intermediate layer of thickness 0.05 to 0.5 mm of a melt adhesive based on an olefin copolymer of melting point 90 to 140 DEG C, … e. a layer of thickness 0.5 to 10 mm containing a propylene polymer of melting point 130 to 165 DEG C. …