C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/04 (2006.01) A61F 13/15 (2006.01) C08K 3/36 (2006.01) C08K 9/06 (2006.01) C08K 9/08 (2006.01) C08L 23/02 (2006.01) C08L 83/04 (2006.01) D01D 5/08 (2006.01) D01F 6/04 (2006.01) D01F 6/46 (2006.01) D01F 6/66 (2006.01) D04H 1/42 (2006.01) D04H 3/16 (2006.01)
Patent
CA 2090793
Abstract 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 whichthe 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.
Macdonald John Gavin
Nohr Ronald Sinclair
Borden Ladner Gervais Llp
Kimberly-Clark Worldwide Inc.
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