Permanent antistatic coating and coated polymeric film
First Claim
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1. A permanent antistatic coating composition for polymeric films, said coating composition comprising:
- a) from about 2 to 11% by weight of an antistatic copolymer, wherein said antistatic copolymer is a copolymer of;
1) from about 60% by weight to about 85% by weight of a quaternary salt of an alkylamino acrylamide or alkylamino acrylate;
2) from about 5% by weight to about 40% by weight of one or more acrylates; and
3) from 0 to about 10% by weight of a crosslinker;
wherein the total weight percent of components 1, 2, and 3 equals 100%;
b) from about 0 to 0.45% by weight of an antistatic compound;
c) from about 0.25 to 2% by weight glycidoxy silane;
d) from about 0.3 to 2% by weight spherical silica particles having an average diameter of about 10-100 nanometers; and
e) water, wherein the total weight percent of a-e equals 100%.
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Abstract
A thermoplastic film coated with a permanent antistatic composition to form an antistatic coating thereon, and a method for priming a thermoplastic film with the antistatic composition. The antistatic composition comprises: from 2 to 11% by weight of an antistatic copolymer; from 0 to 0.45% by weight of an antistatic compound; from 0.25 to 2% by weight glycidoxy silane; from about 0.3 to 2% by weight spherical silica particles having an average diameter of 10-100 nanometers; and water, or a mixture or water and organic solvent, wherein the total weight percent of all components equals 100%.
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Citations
46 Claims
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1. A permanent antistatic coating composition for polymeric films, said coating composition comprising:
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a) from about 2 to 11% by weight of an antistatic copolymer, wherein said antistatic copolymer is a copolymer of; 1) from about 60% by weight to about 85% by weight of a quaternary salt of an alkylamino acrylamide or alkylamino acrylate; 2) from about 5% by weight to about 40% by weight of one or more acrylates; and 3) from 0 to about 10% by weight of a crosslinker; wherein the total weight percent of components 1, 2, and 3 equals 100%; b) from about 0 to 0.45% by weight of an antistatic compound; c) from about 0.25 to 2% by weight glycidoxy silane; d) from about 0.3 to 2% by weight spherical silica particles having an average diameter of about 10-100 nanometers; and e) water, wherein the total weight percent of a-e equals 100%. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A polymeric film having permanent antistatic properties, said film comprising:
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A) an oriented polymeric film; and B) an effective amount of a coating on at least one side of said film, sufficient to provide antistatic properties to said film, said coating, on a dry weight basis, comprising; a) from about 31 to 96% by weight of an antistatic copolymer, wherein said antistatic copolymer is a copolymer of; 1) from about 60% by weight to about 85% by weight of a quaternary salt of an alkylamino acrylamide or alkylamino acrylate; 2) from about 5% by weight to about 40% by weight of one or more acrylates; and 3) from 0 to about 10% by weight of a crosslinker; wherein the total weight percent of components 1, 2, and 3 equals 100%; b) from about 0 to 15% by weight of an antistatic compound; c) from about 1 to 47% by weight glycidoxy silane; and d) from about 2 to 48% by weight spherical silica particles having an average diameter about 10-100 nanometers in diameter, wherein the total weight percent of a-d equals 100%. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method for priming a polymeric film to provide permanent antistatic properties, comprising:
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A) coating a polymeric film with an effective amount of a permanent antistatic composition; and B) drying said coating on said film, wherein said coating comprises; a) from about 2 to 11% by weight of an antistatic copolymer, wherein said antistatic copolymer is a copolymer of; 1) from about 60% by weight to about 85% by weight of a quaternary salt of an alkylamino acrylamide or alkylamino acrylate; 2) from about 5% by weight to about 40% by weight of one or more acrylates; and 3) from 0 to about 10% by weight of a crosslinker; wherein the total weight percent of components 1, 2, and 3 equals 100%; b) from about 0 to 0.45% by weight of an antistatic compound; c) from about 0.25 to 2% by weight glycidoxy silane; d) from about 0.3 to 2% by weight spherical silica particles having an average diameter of about 10-100 nanometers; and e) water, wherein the total weight percent of a-e equals 100%. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification