Title:
The optical article containing a temporary fog resistance tunic based on a sorbitan surface-active agent
Document Type and Number:
Japanese Patent JP6087935
Kind Code:
B2
Abstract:
An optical article includes a substrate having a main surface coated with an antireflection coating and, directly contacting the antireflection coating, a precursor coating of an antifog coating obtained through the grafting on the antireflection coating of at least one compound B bearing a polyoxyalkylene group, the coating precursor of the antifog coating being coated with a surfactant film so as to form an antifog coating. The surfactant film contains at least one surfactant A having a sorbitan ring hydroxyl groups functionalized with OH-terminated polyoxyalkylene groups and R1 groups of formula:—(RdO)z—(Y)n2—R′, in which Rd is an alkylene group, z is an integer >1, Y is a divalent group, n2 is 0 or 1 and R′ is a saturated hydrocarbon group having 12 to 19, preferably 13 to 19 carbon atoms. Surfactants A provide a visual indication whether or not the antifogging effect will still be long-lasting.
Inventors:
Annette Clettier
Charlotte Saint-Ryu
Charlotte Saint-Ryu
Application Number:
JP2014534947A
Publication Date:
March 01, 2017
Filing Date:
October 14, 2011
Export Citation:
Assignee:
Essilor International (Compagne General Doputek)
International Classes:
G02B1/10; G02B1/111; G02C7/02
Domestic Patent References:
| JP2002240186A | ||||
| JP2002308651A | ||||
| JP2004317539A |
Foreign References:
| WO2011080472A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Fukumoto product
Tetsuji Koga
Yoichi Watanabe
Masaru Nakajima
Ryotaro Takei
Takashi Ishida
Fukumoto product
Tetsuji Koga
Yoichi Watanabe
Masaru Nakajima
Ryotaro Takei
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