Resin sheets exhibiting enhanced adhesion to inorganic surfaces

Patent metadata

Field	Value
Publication number	US-9688018-B2
Application number	US-201514887907-A
Country	US
Kind code	B2
Filing date	Oct 20, 2015
Priority date	Dec 8, 2014
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

Resin layers and interlayers exhibiting enhanced adhesion to inorganic surfaces, such as glass, are provided. In some cases, the layers and interlayers may comprise at least one adhesion stabilizing agent for improving adhesion to various surfaces, even in the presence of moisture. Such layers and interlayers may be useful, for example, in multiple layer panels, such as, for example, safety glass used in automotive and architectural applications.

First claim

What is claimed is:

1. A method of making or treating an interlayer, said method comprising: applying a coating material to at least a portion of at least one surface of an ionomeric resin sheet to thereby provide a surface-treated ionomeric resin sheet, wherein said coating material comprises at least one silanol-containing adhesion stabilizing agent or precursor thereto; wherein said surface-treated ionomeric resin sheet comprises one or more surface-treated locations that exhibit a silanol concentration gradient characterized by a surface concentration of elemental silicon that is greater than a mid-thickness concentration of elemental silicon, wherein said ionomeric resin sheet comprises a perimeter region defined as the portion of said ionomeric resin sheet located within 0.25 inches of the perimeter edges of said ionomeric resin sheet, wherein at least a portion of said surface-treated locations are located within said perimeter region and wherein at least 10 percent of the total surface area of said perimeter region is made up of at least a portion of said surface-treated locations.

2. The method of claim 1 , wherein said silanol-containing adhesion stabilizing agent or precursor thereto is present in said coating material in an amount of at least 0.25 weight percent, based on the total weight of said coating material.

3. The method of claim 1 , wherein said silanol-containing adhesion stabilizing agent or precursor thereto comprises at least one alkoxysilane selected from the group consisting of γ-glycidoxypropyltrimethoxysilane, aminoethylaminopropyltrimethoxysilane, and combinations thereof.

4. The method of claim 1 , wherein said applying includes spray coating at least a portion of said coating material onto at least a portion of said surface.

5. The method of claim 1 , wherein said method is a method of treating an interlayer; further comprising, prior to said applying, obtaining a pre-formed ionomeric resin sheet, wherein said applying includes applying said coating material to at least a portion of said pre-formed resin sheet to provide said surface-treated ionomeric resin sheet.

6. The method of claim 1 , wherein said method is a method of making an interlayer; further comprising, prior to said applying, forming said ionomeric resin sheet, wherein said applying includes applying said coating material to at least a portion of said ionomeric resin sheet after said forming.

Assignees

• Solutia Inc

Inventors

• Cui Weihong
• Haldeman Steven V
• Koran Francois Andre
• Zhang Pu

Classifications

• B32B17/10688

  Adjustment of the adherence to the glass layers · CPC title

• B32B2255/24

  Organic non-macromolecular coating · CPC title

• B32B2255/10

  on synthetic resin layer or on natural or synthetic rubber layer · CPC title

• B32B17/10798

  containing silicone · CPC title

• B32B37/0038

  involving application of liquid to the layers prior to lamination, e.g. wet laminating (B32B37/12 takes precedence) · CPC title