Optical reflection film
US-2019004224-A1 · Jan 3, 2019 · US
Optical reflective film
US2019111659A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019111659-A1 |
| Application number | US-201716090373-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 15, 2017 |
| Priority date | Mar 31, 2016 |
| Publication date | Apr 18, 2019 |
| Grant date | — |
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Abstract
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An optical reflective film including refractive index layers containing a water-soluble resin is provided, wherein the film has a small color tone variation and less occurrence of cracks even after a prolonged use. An optical reflective film, including: a substrate; and a dielectric multilayer film formed by alternately laminating a low refractive index layer and a high refractive index layer, disposed on one surface of the substrate, wherein at least one layer of the low refractive index layer and the high refractive index layer is a water-dispersible cationic urethane resin-containing layer, containing: a water-soluble resin; a refractive index adjusting agent; a water-dispersible cationic urethane resin; and a cationic polymer having a tertiary amino group or a cation (salt) thereof or a quaternary ammonium group.
First claim
Opening claim text (preview).
1 . An optical reflective film, comprising: a substrate; and a dielectric multilayer film formed by alternately laminating a low refractive index layer and a high refractive index layer, disposed on one surface of the substrate, wherein at least one layer of the low refractive index layer and the high refractive index layer is a water-dispersible cationic urethane resin-containing layer, containing: a water-soluble resin; a refractive index adjusting agent; a water-dispersible cationic urethane resin; and a cationic polymer having a tertiary amino group or a cation (salt) thereof or a quaternary ammonium group. 2 . The optical reflective film according to claim 1 , wherein the cationic polymer having a tertiary amino group or a cation (salt) thereof or a quaternary ammonium group has a mass ratio of 0.2 to 4.0 by a solid content ratio, relative to the water-dispersible cationic urethane resin. 3 . The optical reflective film according to claim 1 , wherein the water-dispersible cationic urethane resin has a content of 2 to 20% by mass in the water-dispersible cationic urethane resin-containing layer. 4 . The optical reflective film according to claim 1 , wherein the water-dispersible cationic urethane resin is a carbonate-based urethane resin. 5 . The optical reflective film according to claim 1 , wherein the water-soluble resin has an average polymerization degree of 4000 to 6000. 6 . The optical reflective film according to claim 1 , wherein at least one layer of the high refractive index layers is the water-dispersible cationic urethane resin-containing layer containing zirconium oxide particles as the refractive index adjusting agent. 7 . The optical reflective film according to claim 1 , wherein at least one layer of the low refractive index layers is the water-dispersible cationic urethane resin-containing layer containing silicon oxide particles as the refractive index adjusting agent. 8 . The optical reflective film according to claim 1 , wherein a plurality of the low refractive index layers is the water-dispersible cationic urethane resin-containing layer.
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- What does patent US2019111659A1 cover?
- An optical reflective film including refractive index layers containing a water-soluble resin is provided, wherein the film has a small color tone variation and less occurrence of cracks even after a prolonged use. An optical reflective film, including: a substrate; and a dielectric multilayer film formed by alternately laminating a low refractive index layer and a high refractive index layer, …
- Who is the assignee on this patent?
- Konica Minolta Inc
- What technology area does this patent fall under?
- Primary CPC classification G02B5/26. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Apr 18 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).