Polyurethane-based adhesive coating or film, and use of same in laminated glass panes

• US 4,705,721 A
• Filed: 02/26/1986
• Issued: 11/10/1987
• Est. Priority Date: 02/26/1985
• Status: Expired due to Term

• Current Assignee: Saint-Gobain Vitrage
• Original Assignee: Saint-Gobain Vitrage
• Inventors: Klempner, Daniel, Frisch, Kurt C., Holzer, Gerhard, Radisch, Helmer
• Primary Examiner(s): HERBERT JR, THOMAS
• Application Number:
  US06/833,044
• Time in Patent Office: 622 Days
• Field of Search: 428/425.6, 428/212, 428/423.1, 428/423.3, 428/423.7, 428/424.8, 428/424.6, 428/412, 428/425.1, 428/430, 428/349, 156/331.7, 156/313, 528/66, 528/75
• US Class Current: 428/349
• CPC Class Codes: B32B 17/1077 containing polyurethane
• CPC Class Codes: C08G 18/10 Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• CPC Class Codes: C08G 18/3212 containing cycloaliphatic groups
• CPC Class Codes: C08G 18/6511 compounds of group C08G18/3203
• CPC Class Codes: C08G 18/6588 with compounds of group C08G18/3203
• CPC Class Codes: C09J 175/04 Polyurethanes
• CPC Class Codes: Y10T 428/2826 Synthetic resin or polymer
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31554 Next to second layer of polyamidoester
• CPC Class Codes: Y10T 428/31565 Next to polyester [polyethylene terephthalate, etc.]
• CPC Class Codes: Y10T 428/3158 Halide monomer type [polyvinyl chloride, etc.]
• CPC Class Codes: Y10T 428/31587 Hydrocarbon polymer [polyethylene, polybutadiene, etc.]
• CPC Class Codes: Y10T 428/31591 Next to cellulosic
• CPC Class Codes: Y10T 428/31601 Quartz or glass
• CPC Class Codes: Y10T 428/31616 Next to polyester [e.g., alkyd]

Abstract

A transparent adhesive coating or film based on polyurethane. The coating or film comprises a polurethane formed from at least one aliphatic or cycloaliphatic diisocyanate, at least one polyol chosen from among the polyether diols, the polycaprolactone diols, the polycarbonate diols, and the polybutadiene diols, and at least one chain-lengthening agent which is a product of the reduction of dimeric acid to a diol. The adhesive coating or film is employed in laminated panes of glass and/or plastic material.

Claims

1. A transparent adhesive polyurethane-based layer for use in laminated panes, wherein the polyurethane is formed from at least one aliphatic or cycloaliphatic diisocyanate, at least one polyol selected from the group consisting of the polyether diols, the polycaprolactone diols, the polycarbonate diols, and the polybutadiene diols, and at least one chain-lengthening agent which is a product of the reduction of dimeric acid to diol form, said dimeric acid having 36 C atoms and produced by Diels-Alder-type dimerization of unsaturated fatty acids having 18 C atoms, said acid being further characterized by having two or more lateral alkyl branches and at least one olefinic double bond.

2. A transparent sheet of plastic material of high optical quality, employed in the manufacture of laminated glass panes and comprised of two layers, one of which layers is comprised of plastic material having antilaceration and self-healing properties, wherein the first layer is comprised of a heat-setting polyurethane material, and the other layer comprised of plastic material having adhesive properties;

and wherein the layer of plastic material having adhesive properties is the adhesive layer according to claim 1.

3. A laminated glass pane comprising an adhesive layer according to claim 1 on one of its major surfaces.

4. A laminated glass pane according to claim 3, wherein the adhesive layer is disposed between two glass sheets.

5. A laminated glass pane according to claim 3, wherein the adhesive layer is disposed between two sheets, coatings, or films, of plastic material, which material is selected from the group consisting of polycarbonate, cellulose plastic, acrylic, polyvinyl chloride, polystyrene, polyethylene terephthalate, and polyurethane.

6. A laminated glass pane according to claim 3, wherein the adhesive layer is disposed between a glass sheet and a sheet comprised of plastic material.

7. A laminated glass pane according to claim 6, wherein said sheet of plastic material comprises heat-setting polurethane material having antilaceration and self-healing properties.

8. A transparent adhesive layer according to claim 1, wherein the polyol has a molecular weight between 300 and 3000.

9. A transparent adhesive layer according to claim 1, wherein the aliphatic diisocyanate is selected from the group consisting of 4,4'"'"'-cyclohexane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, and dimeryl diisocyanate.

10. A transparent adhesive layer according to claim 9, wherein the diisocyanate is selected from the group consisting of trans-1,4-cyclohexane diisocyanate and 4,4'"'"'-methylenebis(cyclohexyl) diisocyanate.

11. A transparent adhesive layer according to claim 1, wherein the polyol is a polyether diol selected from the group consisting of the poly(1,4-oxybutylene)diols and the poly(oxypropylene)diols.

12. A transparent adhesive layer according to claim 11, wherein the polyol is poly(1,4-oxybutylene) glycol.