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US 5,393,831 AGranted
Shelf stable nonwoven fabrics and films
AssigneeKimberly-Clark Corporation
InventorRobert L. Hudson
Life of this patent
Estimating the term…
Abstract
Shelf stable nonwoven fabrics and films are made from polyolefin compositions which comprise a polyolefin which contains no more than a minor amount of a phenolic antioxidant, a water-sensitive stabilizer, a transition metal organic salt and an oxidizable unsaturated compound.
Claims19
A shelf stable nonwoven fabric or film formed from a polyolefin composition comprising a mixture of:
- A. a polyolefin which contains no more than a minor amount of phenolic antioxidant;
- B. a water-sensitive compound which imparts high stability to the polyolefin composition under dry conditions of storage, shipping and consumer use but which, upon exposure to conditions of high humidity, interacts with water to form a material providing less stability to the polyolefin, allowing a transition metal organic salt to catalyze the degradation of the polyolefin;
- C. a transition metal organic salt;
- and
- D. an oxidizable unsaturated compound.
2 more elements
A shelf stable polyolefin nonwoven fabric comprising a mixture of:
- A. a polyolefin which contains no more than a minor amount of phenolic antioxidant;
- B. a water sensitive compound which imparts high stability to the polyolefin composition under dry conditions of storage, shipping and consumer use but which, upon exposure to conditions of high humidity, interacts with water to form a material providing less stability to the polyolefin, allowing a transition metal organic salt to catalyze the degradation of the polyolefin;
- C. a transition metal organic salt;
- and
- D. an oxidizable unsaturated compound.
2 more elements
A shelf stable polyolefin nonwoven film comprising a mixture of:
- A. a polyolefin which contains no more than a minor amount of phenolic antioxidant;
- B. a water sensitive compound which imparts high stability to the polyolefin composition under dry conditions of storage, shipping and consumer use but which, upon exposure to conditions of high humidity, interacts with water to form a material providing less stability to the polyolefin, allowing a transition metal organic salt to catalyze the degradation of the polyolefin;
- and
- C. a transition metal organic salt;
- and
- D. an oxidizable unsaturated compound.
3 more elements
A composition for manufacturing a degradable article, wherein the composition comprises a mixture of:
- A. a polyolefin which contains no more than a minor amount of phenolic antioxidant;
- B. a water sensitive compound which imparts high stability to the polyolefin composition under dry conditions of storage, shipping and consumer use but which, upon exposure to conditions of high humidity, interacts with water to form a material providing less stability to the polyolefin, allowing a transition metal organic salt to catalyze the degradation of the polyolefin;
- and
- C. a transition metal organic salt;
- and
- D. an oxidizable unsaturated compound.
3 more elements
Dependencies are inferred from the claim text.