Polymer interlayers comprising a compatibilizer
AssigneeSolutia Inc.
InventorWenjie Chen
Life of this patent
Estimating the term…
Abstract
A polymer composition comprising a first poly(vinyl butyral) resin having a first residual hydroxyl content; a second poly(vinyl butyral) resin having a second residual hydroxyl content; a plasticizer; and at least one compatibilizer, such as an anhydride compatibilizer; wherein the difference between the first and second residual hydroxyl contents is at least 2 wt. %, and wherein the polymer composition has a percent haze of less than 5%. The use of a compatibilizer reduces or minimizes the optical defects, such as haze and color, without sacrificing other characteristics of the composition. The composition may be used in an interlayer.
Claims13
A polymer composition comprising:
- a first poly(vinyl butyral) resin having a first residual hydroxyl content;
- a second poly(vinyl butyral) resin having a second residual hydroxyl content;
- a plasticizer;
- and
- at least one compatibilizer wherein the compatibilizer is an anhydride compatibilizer;
- wherein the difference between the first and second residual hydroxyl contents is at least 2 wt. %, and
- wherein the polymer composition has a percent haze of less than 5% (as measured in accordance with ASTM D1003-Procedure B using Illuminant C).
A polymer composition comprising:
- a first poly(vinyl butyral) resin having a first residual hydroxyl content;
- a second poly(vinyl butyral) resin having a second residual hydroxyl content;
- a plasticizer;
- and
- from 0.01 to 10 wt. % of at least one anhydride compatibilizer;
- wherein the difference between the first and second residual hydroxyl contents is at least 2 wt. %, and
- wherein the polymer composition has a percent haze of less than 5% (as measured in accordance with ASTM D1003-Procedure B using Illuminant C).
Dependencies are inferred from the claim text.