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US 4,617,230 AGranted
Latex containing odor inhibitor
AssigneeThe B. F. Goodrich Company
InventorsPravinchandra K. Shah, George J. Antlfinger
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AssigneeThe B. F. Goodrich Company
InventorsPravinchandra K. Shah, George J. Antlfinger
Estimating the term…
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.degree. C. to -20.degree. C., 10 to 30 weight parts of a hard hydrophobic acrylate monomer having Tg of +40.degree. C. to +120.degree. 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.
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.degree. C. to -20.degree. C., a lesser amount of a hard hydrophobic monomer having Tg in the range of about +40.degree. C. to +120.degree. 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.
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;
A saturated latex prepared by free radical initiation comprising a preponderance of a soft hydrophobic monomer having Tg in the range of about -80.degree. C. to -20.degree., a lesser amount of a hard hydrophobic monomer having Tg in the range of about +40.degree. C. to +120.degree. 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.
Dependencies are inferred from the claim text.