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Polyurethane synthesis

A polyurethane film, aliphatic polyurethane technology, used in PVC-free applications

Pending Publication Date: 2021-11-23
AVERY DENNISON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prepolymers do not contain any isocyanates

Method used

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  • Polyurethane synthesis
  • Polyurethane synthesis
  • Polyurethane synthesis

Examples

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Embodiment Construction

[0040] The present invention may be understood more readily by reference to the following detailed description of the desired embodiments included therein. In the following specification and claims which follow, reference will be made to certain terms which shall be defined to have the following meanings.

[0041] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In case of conflict, the present document, including definitions, will control. Preferred methods and materials are described below, although similar or equivalent methods and materials can be used in the practice or testing of the present disclosure. All publications, patent applications, patents, and other references mentioned herein are incorporated by reference in their entirety. The materials, methods, and terms disclosed herein are illustrative only and not intended to be limiting.

[0042] The singular fo...

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Abstract

A method is disclosed for producing a polyurethane film including the steps of depositing a prepolymer composition, drying the prepolymer composition, and crosslinking the propolymer composition.

Description

[0001] Related Application Cross Reference [0002] This application claims the benefit of U.S. Application Serial No. 62 / 806,067, filed February 15, 2019, the entire contents of which are incorporated herein by reference. technical field [0003] The subject matter relates to methods of producing polyurethanes that are especially useful in graphic film applications, particularly those that are PVC-free. Background technique [0004] Polyurethanes are typically formed by extrusion, water-based, UV light or solvent-based methods. Film fabrication of multilayer structures may include process routes such as extrusion, casting, coating, etc. [0005] The extrusion process can start with a preformed thermoplastic polyurethane resin or reactants used to form polyurethane by reactive extrusion. However, expensive equipment is required and the extrusion process lacks versatility. [0006] Casting water-based or solvent-based compositions on a substrate increases versatility. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/08C08G18/44C08G18/72C08G18/75C08J5/18C08G18/83C08G18/10C09J7/30B32B27/40B32B27/06B32B7/12B32B27/00
CPCC08G18/44C08G18/0823C08G18/722C08G18/755C08G18/758C08G18/833C08G18/10C09J7/25C09J7/29C09J2475/006C09J2203/334B32B27/08B32B2307/762B32B2307/756B32B2307/712C09J2301/302C08G18/2825C08G18/348C08J3/24C08J5/18C08J2375/04C08K5/17C08K5/3412C08L75/04C08L2203/16
Inventor N·艾维拉大卫·G·布兰德D·G·哈丁格尔K·R·海姆贝奇R·马利克
Owner AVERY DENNISON CORP