# US 2014/0154513 A1 · Thermoplastic polyurethane interlayer

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- Number: US 2014/0154513 A1
- Document ID: US20140154513A1
- Status: Published application
- Kind: A1
- Application number: 13/691,633
- Filed: 2012-11-30
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: PPG Industries Ohio, Inc.
- Applicants: Ppg Industries Ohio, Inc.
- Inventors: Razmik Boghossian; Khushroo H. Lakdawala
- Web page: https://patentgrep.com/patent/US20140154513A1

## CPC

- B32B 27/40: comprising polyurethanes
- B32B 17/1077: {containing polyurethane}
- B32B 27/08: of synthetic resin
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 27/365: {comprising polycarbonates}
- C08G 18/06: with compounds having active hydrogen
- C08G 18/3206: {aliphatic}
- C08G 18/4018: {Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48}
- C08G 18/42: Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G 18/48: Polyethers
- C08G 18/73: acyclic
- C08G 18/74: cyclic
- C08G 18/76: aromatic
- B32B 2307/412: Transparent
- B32B 2307/558: Impact strength, toughness
- B32B 2307/734: Dimensional stability
- B32B 2571/02: defensive, e.g. armour plates or anti-ballistic clothing
- B32B 2605/006: Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
- Y10T 156/10: Methods of surface bonding and/or assembly therefor
- Y10T 428/31507: Of polycarbonate
- Y10T 428/31551: Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T 428/31554: Next to second layer of polyamidoester
- Y10T 428/31573: Next to addition polymer of ethylenically unsaturated monomer
- Y10T 428/31576: Ester monomer type [polyvinylacetate, etc.]
- Y10T 428/31601: Quartz or glass
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A composition including an isocyanate, a polyether polyol and a low molecular weight polyester polyol having a weight average molecular weight in a range of about 200 g/mol to about 1000 g/mol is disclosed. Films including the composition and interlayers including the film are also disclosed. Transparencies including the interlayer and methods of making the same are further disclosed.

## Claims

### Claim 1

A composition comprising:
an isocyanate;
a polyether polyol; and
a low molecular weight polyester polyol having a weight average molecular weight in a range of about 200 g/mol to about 1000 g/mol.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the low molecular weight polyester polyol has a weight average molecular weight in a range of about 400 g/mol to about 600 g/mol.

### Claim 3 (depends on 1)

The composition of claim 1, wherein the polyether polyol has a weight average molecular weight in a range of about 250 g/mol to about 2900 g/mol.

### Claim 4 (depends on 1)

The composition of claim 1, wherein the low molecular weight polyester polyol is a low molecular weight aliphatic or aromatic polyester diol.

### Claim 5 (depends on 1)

The composition of claim 1, wherein the low molecular weight polyester polyol has a functionality in a range of about 2 to about 2.7.

### Claim 6 (depends on 1)

The composition of claim 1, wherein the low molecular weight polyester polyol is a low molecular weight aliphatic or aromatic polyester polyol having a functionality in a range of about 2 to about 2.7.

### Claim 7 (depends on 1)

The composition of claim 1, wherein the polyether polyol is an aliphatic or aromatic polyether diol.

### Claim 8 (depends on 1)

An interlayer comprising the composition of claim 1.

### Claim 9 (depends on 8)

A transparency comprising:
a transparent, rigid substrate; and
the interlayer of claim 8 on the transparent, rigid substrate.

### Claim 10 (depends on 9)

The transparency of claim 9, wherein the transparent, rigid substrate includes a material selected from the group consisting of glasses, polycarbonates, casted acrylics, stretched acrylics, and polyurethanes.

### Claim 11 (depends on 9)

The transparency of claim 9, further comprising a primer layer between the interlayer and the transparent, rigid substrate.

### Claim 12 (depends on 9)

The transparency of claim 9, further comprising a second transparent, rigid substrate, wherein the interlayer is between the transparent, rigid substrate and the second transparent, rigid substrate.

### Claim 13 (depends on 12)

The transparency of claim 12, wherein the second transparent, rigid substrate comprises a material different from a material of the transparent, rigid substrate.

### Claim 14 (depends on 12)

The transparency of claim 12, further comprising a primer layer between the interlayer and the second transparent, rigid substrate.

### Claim 15 (depends on 8)

A method of making a transparency, the method comprising:
laminating the interlayer of claim 8 onto a transparent, rigid substrate; and
heating the laminated interlayer under pressure.

### Claim 16 (depends on 15)

The method of claim 15, further comprising applying a primer layer onto the transparent, rigid substrate or the interlayer prior to laminating the interlayer onto the transparent, rigid substrate.

### Claim 17 (depends on 15)

The method of claim 15, further comprising:
laminating a second transparent, rigid substrate onto the interlayer to position the interlayer between the transparent, rigid substrate and the second transparent, rigid substrate prior to heating; and
heating the laminated interlayer under pressure.

### Claim 18 (depends on 17)

The method of claim 17, further comprising applying a primer layer onto the second transparent, rigid substrate or the interlayer prior to laminating the second transparent, rigid substrate onto the interlayer.

### Claim 19

A composition comprising:
an isocyanate;
a polyether diol;
a branched short chain diol having a backbone including carbon atoms in a range of 1 to 9, and at least one branching group; and
a cross-linker having a hydroxyl functionality in a range of 2.2 to 4.

### Claim 20 (depends on 19)

The composition of claim 19, wherein the branched short chain diol comprises one to four branching groups having from 1 to 4 carbon atoms.