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US 2016/0101605 A1Published application
Polymer interlayers having improved optical properties
AssigneeSolutia Inc.
InventorsJUN LU, WENJIE CHEN
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Abstract
An interlayer comprised of a thermoplastic resin, at least one high refractive index plasticizer and, optionally, a conventional plasticizer. The use of a thermoplastic resin, a high refractive index plasticizer, and, optionally, a conventional plasticizer reduces or minimizes the optical defects caused by different refractive indices without sacrificing other characteristics of the interlayer.
Claims20
A multiple layer polymer interlayer comprising:
- a first polymer layer comprising a thermoplastic resin and a first plasticizer;
- and
- a second polymer layer comprising a thermoplastic resin and a second plasticizer;
- wherein the first polymer layer is softer than the second polymer layer, and wherein the interlayer has a refractive index of at least about 1.480.
1 more element
A multiple layer polymer interlayer comprising:
- a first polymer sheet comprising a thermoplastic polymer and from 5 phr to 60 phr of a first plasticizer and having a refractive index;
- a second polymer sheet comprising a thermoplastic polymer and from 10 phr to 120 phr of a second plasticizer and having a refractive index;
- wherein the second polymer layer is softer than the first polymer layer, and wherein the interlayer has a refractive index of at least about 1.480, and
- wherein the difference between the refractive index of the first polymer layer and the second polymer layer is less than about 0.009.
1 more element
A multiple layer polymer interlayer comprising:
- a first polymer layer comprising poly(vinyl butyral) resin and a first plasticizer wherein the first polymer layer has a first residual hydroxyl content;
- a second polymer layer comprising poly(vinyl butyral) resin and a second plasticizer wherein the second polymer layer has a second residual hydroxyl content;
- and
- wherein the first polymer layer is softer than the second polymer layer, wherein the difference between the first residual hydroxyl content and the second residual hydroxyl content is at least 2 weight percent, and wherein the difference between the refractive index of the first polymer layer and the second polymer layer is less than about 0.009.
1 more element
Dependencies are inferred from the claim text.