Latex containing odor inhibitor
First Claim
1. Sterilized nonwoven fabric that has a reduced odor on sterilization comprising nonwoven fibers bonded with a saturated latex prepared by free radical initiation comprising a preponderance of a soft hydrophobic monomer having Tg in the range of about -80°
- C. to -20°
C., a lesser amount of a hard hydrophobic monomer having Tg in the range of about +40°
C. to +120°
C., a small amount of an unsaturated carboxylic acid, a small amount of N-alkylol acrylamide or methacrylamide, and a sufficient amount of an emulsifier, said latex having admixed therein about 0.01 to 5 weight parts per 100 weight parts of latex solids of an odor inhibition agent selected from amine-type antioxidants and hindered phenols that have the function of reducing the odor that is generated on sterilization of the nonwoven fabric.
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Accused Products
Abstract
A nonwoven fabric repellent to body fluids and having reduced odor on sterilization by irradiation or steam is made by bonding nonwoven fibers with a saturated latex, forming said nonwoven fabric, and sterilizing said fabric, said latex is prepared by polymerizing, in the presence of 0.1 to 2 weight parts of a free radical initiator and a sufficient amount of a nonionic or anionic emulsifier, 65 to 85 weight parts of a soft hydrophobic monomer having Tg of -80° C. to -20° C., 10 to 30 weight parts of a hard hydrophobic acrylate monomer having Tg of +40° C. to +120° C., 0.1 to 5 weight parts of an unsaturated carboxylic acid containing 3 to 6 carbon atoms, and 0.1 to 5 weight parts of N-alkylol acrylamide or methacrylamide containing 1 to 10 carbon atoms, said latex has post-added and admixed therein 0.01 to 5 weight parts of an odor inhibition agent selected from amine-type antioxidants and hindered phenols that function to reduce odor of said fabric on sterilization thereof.
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Citations
36 Claims
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1. Sterilized nonwoven fabric that has a reduced odor on sterilization comprising nonwoven fibers bonded with a saturated latex prepared by free radical initiation comprising a preponderance of a soft hydrophobic monomer having Tg in the range of about -80°
- C. to -20°
C., a lesser amount of a hard hydrophobic monomer having Tg in the range of about +40°
C. to +120°
C., a small amount of an unsaturated carboxylic acid, a small amount of N-alkylol acrylamide or methacrylamide, and a sufficient amount of an emulsifier, said latex having admixed therein about 0.01 to 5 weight parts per 100 weight parts of latex solids of an odor inhibition agent selected from amine-type antioxidants and hindered phenols that have the function of reducing the odor that is generated on sterilization of the nonwoven fabric. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- C. to -20°
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13. Method of making sterilized nonwoven fabric having reduced odor on sterilization comprising bonding nonwoven fibers with a saturated latex, forming a nonwoven fabric from the bonded fibers, and sterilizing said nonwoven fabric;
- said nonwoven fibers are bonded with a latex prepared by free radical initiation comprising a preponderance of a soft hydrophobic monomer having Tg in the range of about -80°
C. to -20°
C., a lesser amount of a hard hydrophobic monomer having Tg in the range of about +40°
C. to +120°
C., a sufficient amount of an unsaturated carboxylic acid, a small amount of N-alkylol acrylamide or methacrylamide and a small amount of an emulsifier, said latex having admixed therein about 0.01 to 5 weight parts per 100 weight parts of latex solids of an odor inhibition agent selected from hindered phenols and amine-type antioxidants that have the function of reducing the odor that is generated on sterilization of the nonwoven fabric. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
- said nonwoven fibers are bonded with a latex prepared by free radical initiation comprising a preponderance of a soft hydrophobic monomer having Tg in the range of about -80°
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25. A saturated latex prepared by free radical initiation comprising a preponderance of a soft hydrophobic monomer having Tg in the range of about -80°
- C. to -20°
, a lesser amount of a hard hydrophobic monomer having Tg in the range of about +40°
C. to +120°
C., a small amount of an unsaturated carboxylic acid, a small amount of N-alkylol acrylamide or methacrylamide, and a sufficient amount of an emulsifier, said latex having admixed therein about 0.01 to 5 weight parts per 100 weight parts of latex solids of an odor inhibition agent selected from amine-type antioxidants and hindered phenols that have the function of reducing the odor that is generated on sterilization of the nonwoven fabric bonded therewith.
- C. to -20°
Specification