Water repellent surface treatment for plastic and coated plastic substrates
First Claim
Patent Images
1. An article comprising a plastic substrate the surface of which is coated witha. a silica primer layer;
- andb. a perfluoroalkylalkylsilane bonded to said silica primer layer wherein said perfluoroalkylalkylsilane is selected from compounds having the general formula Rm (R'"'"'n)SiX4-n-m, wherein R is a perfluoroalkylalkyl radical, R'"'"' is selected from the group consisting of vinyl and alkyl radicals, m is one, n is zero or one, m+n is less than 4, and X is a radical selected from the group consisting of halogen, alkoxy and acyl radicals.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and article are disclosed wherein a plastic substrate is provided with a more durable non-wetting surface by deposition of a silica primer layer prior to treatment with perfluoroalkylalkylsilane and optionally a fluorinated olefin telomer on the surface which comprises the silica primer layer.
-
Citations
18 Claims
-
1. An article comprising a plastic substrate the surface of which is coated with
a. a silica primer layer; - and
b. a perfluoroalkylalkylsilane bonded to said silica primer layer wherein said perfluoroalkylalkylsilane is selected from compounds having the general formula Rm (R'"'"'n)SiX4-n-m, wherein R is a perfluoroalkylalkyl radical, R'"'"' is selected from the group consisting of vinyl and alkyl radicals, m is one, n is zero or one, m+n is less than 4, and X is a radical selected from the group consisting of halogen, alkoxy and acyl radicals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- and
-
10. A method of producing a non-wetting surface on a plastic substrate comprising the steps of:
-
a. depositing a silica primer layer on a surface of said substrate; and b. depositing on said silica primer layer a composition comprising a perfluoroalkylalkylsilane wherein said perfluoroalkylalkylsilane is selected from compounds having the general formula Rm (R'"'"'n)SiX4-n-m, wherein R is a perfluoroalkylalkyl radical, R'"'"' is selected from the group consisting of vinyl and alkyl radicals, m is one, n is zero or one, m+n is less than 4, and X is a radical selected from the group consisting of halogen, alkoxy and acyl radicals. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification