Shaped articles having improved properties

PCT No. PCT/US93/09748 Sec. 371 Date Jul. 7, 1995 Sec. 102(e) Date Jul. 7, 1995 PCT Filed Oct. 12, 1993 PCT Pub. No. WO94/09066 PCT Pub. Date Apr. 28, 1994A melt-extrudable thermoplastic composition is proved which includes a thermoplastic polymer and an improved additive system. In one embodiment,...

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Hauptverfasser:	NOHR, RONALD SINCLAIR, GILLBERG-LAFORCE, GUNILLA ELSA, MACDONALD, JOHN GAVIN, KOBYLIVKER, PETER MICHLOVICH
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS BRAIDING CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES NON-WOVEN FABRICS ORGANIC MACROMOLECULAR COMPOUNDS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRIMMINGS USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WADDING
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Beschreibung
Zusammenfassung:	PCT No. PCT/US93/09748 Sec. 371 Date Jul. 7, 1995 Sec. 102(e) Date Jul. 7, 1995 PCT Filed Oct. 12, 1993 PCT Pub. No. WO94/09066 PCT Pub. Date Apr. 28, 1994A melt-extrudable thermoplastic composition is proved which includes a thermoplastic polymer and an improved additive system. In one embodiment, a melt-extrudable thermoplastic composition is provided which includes a thermoplastic polyolefin and an improved additive system made up of a first component and a second component, in which (A) the first component is a defined alkyl-substituted polysiloxane having a number-average molecular weight of from about 3,000 to about 36,000 and which is present in an amount of from about 0.01 to about 3 percent by weight, based on the amount of thermoplastic polyolefin; and (B) the second component is a hydrophobic fumed silica, in which the weight ratio of the first component to the second component is in the range of from about 10 to about 70. In a desired embodiment, the particles of second component are in the range of from about 0,001 to about 1 micrometer. The composition yields, upon melt extrusion, nonwoven webs having significantly increased tensile strengths when compared to nonwoven webs prepared from the thermoplastic polyolefin alone.