Polyolefin fiber
AssigneeHercules Incorporated
InventorJames H. Harrington
Life of this patent
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Abstract
A fiber comprising a polyolefin fiber having a finish which comprises an antistatic composition, wherein the fiber with the finish has a hydrostatic head value at least about 102 mm and is capable of being processed into a nonwoven fabric on processing equipment comprising at least one card and means for bonding the fabric at a throughput of at least about 128 pounds/hours for a period of at least two hours without formation of significant solid antistatic composition build-up on the nonwoven fabric processing equipment, and related compositions and processes, and articles made with such fibers.
Claims145
A fiber comprising a polyolefin fiber having a finish comprising an antistatic composition which comprises:
- (a) at least one neutralized C.sub.3 -C.sub.12 alkyl or alkenyl phosphate alkali metal or alkali earth metal salt;
- and
- (b) a solubilizer, wherein the fiber having the finish is hydrophobic.
A fiber comprising a polyolefin fiber having a finish comprising an antistatic composition selected from the group consisting of composition (I) which comprises:
- (a) at least one neutralized C.sub.3 -C.sub.12 alkyl or alkenyl phosphate alkali metal or alkali earth metal salt;
- and
- (b) a solubilizer comprising at least one member selected from the group consisting of glycols, polyglycols, glycol ethers, and neutralized phosphoric ester salts having the general formula:
- ##STR6## wherein M, which may be the same or different, is an alkali or alkali earth metal or hydrogen, R is a C.sub.16 -C.sub.22 alkyl or alkenyl group, R.sub.1 is ethylene oxide or propylene oxide, and n is 1 to 10, x is 1 to 2 and y is 2 to 1, and x+y=3,
- and composition (II) which comprises at least one neutralized phosphoric ester salt having the general formula (2),
- wherein the finish further comprises a lubricant, and
- wherein the fiber having the finish has a hydrostatic head value of at least about 62 mm.
A fiber comprising a polyolefin fiber having a finish comprising an antistatic composition selected from the group consisting of composition (I) which comprises:
- (a) at least one neutralized C.sub.3 -C.sub.12 alkyl or alkenyl phosphate alkali metal or alkali earth metal salt;
- and
- (b) a solubilizer comprising at least one member selected from the group consisting of glycols, polyglycols, glycol ethers, and neutralized phosphoric ester salts having the general formula:
- ##STR7## wherein M, which may be the same or different, is an alkali or alkali earth metal or hydrogen, R is a C.sub.16 -C.sub.22 alkyl or alkenyl group, R.sub.1 is ethylene oxide or propylene oxide, and n is 1 to 10, x is 1 to 2 and y is 2 to 1, and x+y=3,
- and composition (II) which comprises at least one neutralized phosphoric ester salt having the general formula (2),
- wherein the finish further comprises a lubricant, and
- wherein the fiber having the finish is hydrophobic, and wherein the finish comprises 20:1 to 1.5:1 by weight of the at least one neutralized C.sub.3 -C.sub.12 alkyl or alkenyl phosphate alkali metal or alkali earth metal salt to the solubilizer.
A fiber comprising a polyolefin fiber having an antistatic finish which comprises at least one neutralized phosphoric ester salt having the general formula:
- ##STR8## wherein M, which may be the same or different, is an alkali or alkali earth metal or hydrogen, R is a C.sub.16 -C.sub.22 alkyl or alkenyl group, R.sub.1 is ethylene oxide or propylene oxide, and n is 1 to 10, x is 1 to 2 and y is 2 to 1, and x+y=3, wherein the fiber having the finish has a hydrostatic head value of at least about 62 mm.
A non-depositing, hydrophobic, polyolefin fiber which comprises a polyolefin fiber treated with an antistatic composition comprising:
- (A) an antistat selected from the group consisting of alkali metal C.sub.8 to C.sub.12 alkyl phosphates and sodium oleyl (ethylene oxide) phosphate;
- and
- (B) a solubilizer selected from the group consisting of glycols, polyglycols, glycol ethers, and potassium or sodium oleyl (ethylene oxide) phosphate with an ethylene oxide content range of 2 to 9 moles, provided that when the antistat is sodium oleyl (ethylene oxide) phosphate, the solubilizer may be omitted, wherein the polyolefin fiber has a hydrostatic head value of at least about 62 mm.
A non-depositing, hydrophobic, polypropylene fiber which comprises a polypropylene fiber treated with an antistatic composition comprising:
- (A) as an antistat, potassium C.sub.8 /C.sub.10 alkyl phosphate;
- and
- (B) a solubilizer selected from the group consisting of glycols, polyglycols, glycol ethers, and potassium or sodium oleyl (ethylene oxide) phosphate with an ethylene oxide content range of 2 to 9 moles.
A non-depositing, hydrophobic, polypropylene fiber which comprises a polypropylene fiber treated with an antistatic composition comprising:
- (A) an antistat selected from the group consisting of potassium C.sub.8 to C.sub.12 alkyl phosphates and sodium oleyl (ethylene oxide) phosphate;
- and
- (B) a solubilizer selected from the group consisting of diethylene glycol, polyethylene glycol, and sodium oleyl (ethylene oxide) 9 phosphate, provided that when the antistat is sodium oleyl (ethylene oxide) phosphate, the solubilizer may be omitted.
A non-depositing, hydrophobic, polypropylene fiber which comprises a polypropylene fiber treated with an antistatic composition comprising:
- (A) an antistat selected from the group consisting of potassium C.sub.8 to C.sub.12 alkyl phosphates and sodium oleyl (ethylene oxide) phosphate;
- and
- (B) a solubilizer selected from the group consisting of glycols, polyglycols, glycol ethers, and potassium or sodium oleyl (ethylene oxide) phosphate with an ethylene oxide content range of 2 to 9 moles, provided that when the antistat is sodium oleyl (ethylene oxide) phosphate, the solubilizer may be omitted, wherein said solubilizer is used in an amount of from 5 to 50% of the antistat.
A fiber comprising a polyolefin fiber having a finish comprising an antistatic composition which comprises:
- (a) at least one neutralized C.sub.3 -C.sub.12 alkyl or alkenyl phosphate alkali metal or alkali earth metal salt;
- and
- (b) a solubilizer,
- wherein the finish comprises 20:1 to 1:1 by weight of the at least one neutralized C.sub.3 -C.sub.12 alkyl or alkenyl phosphate alkali metal or alkali earth metal salt to the solubilizer, and
- wherein the fiber has a hydrostatic head value of at least 62 mm.
A fiber comprising a polyolefin fiber having an antistatic finish which comprises at least one neutralized phosphoric ester salt having the general formula:
- ##STR9## wherein M, which may be the same or different, is an alkali or alkali earth metal or hydrogen, R is a C.sub.16 -C.sub.22 alkyl or alkenyl group, R.sub.1 is ethylene oxide or propylene oxide, and n is 1 to 10, x is 1 to 2 and y is 2 to 1, and x+y=3, wherein the fiber having the finish is hydrophobic, and wherein the fiber comprises a bicomponent fiber having a polypropylene core layer and a polyethylene outer layer.
A fiber comprising a polyolefin fiber having an antistatic finish which comprises at least one neutralized phosphoric ester salt having the general formula:
- ##STR10## wherein M, which may be the same or different, is an alkali or alkali earth metal or hydrogen, R is a C.sub.16 -C.sub.22 alkyl or alkenyl group, R.sub.1 is ethylene oxide or propylene oxide, and n is 1 to 10, x is 1 to 2 and y is 2 to 1, and x+y=3, wherein the fiber having the finish is hydrophobic, and wherein the fiber has a sink time of at least about 0.8 hour.
A fiber which is a staple fiber having a length of 1 to 3 inches which is formed by spinning, drawing, crimping and cutting comprising a polyolefin fiber having an antistatic finish which comprises at least one neutralized phosphoric ester salt having the general formula:
- ##STR11## wherein M, which may be the same or different, is an alkali or alkali earth metal or hydrogen, R is a C.sub.16 -C.sub.22 alkyl or alkenyl group, R.sub.1 is ethylene oxide or propylene oxide, and n is 1 to 10, x is 1 to 2 and y is 2 to 1, and x+y=3, and
- wherein the fiber having the finish is hydrophobic.
A fiber comprising a polyolefin fiber having an antistatic finish which comprises at least one neutralized phosphoric ester salt having the general formula:
- ##STR12## wherein M, which may be the same or different, is an alkali or alkali earth metal or hydrogen, R is a C.sub.16 -C.sub.22 alkyl or alkenyl group, R.sub.1 is ethylene oxide or propylene oxide, and n is 1 to 10, x is 1 to 2, and y is 2 to 1, and x+y=3,
- wherein the fiber having the finish is hydrophobic, and
- wherein the polyolefin fiber comprises about 1 to 6 dpf, 1 to 3 inch staple polypropylene fiber comprising about 0.1 to 1%, by dry weight of the fiber of the finish.
Dependencies are inferred from the claim text.