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Solvent-based adhesive composition

A technology of adhesives, compositions, applied in the direction of adhesives, adhesive types, synthetic resin layered products, etc.

Active Publication Date: 2020-01-14
DOW GLOBAL TECH LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of BPA epoxy resins has recently encountered regulatory and user challenges regarding the perceived safety of BPA-based materials for food packaging

Method used

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  • Solvent-based adhesive composition
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  • Solvent-based adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0082] Table 1: Related Raw Materials

[0083]

[0084] The layered membranes of the examples were prepared using the relevant membranes identified in Table 2:

[0085] Table 2: Related Membrane Materials

[0086]

[0087] Preparation of carboxylic acid-terminated polyesters

[0088] Carboxylic acid-terminated polyesters suitable for use in the examples were synthesized according to the following general procedure, where the detailed formulation compositions for various carboxylic acid-terminated polyester samples are summarized in Table 3. Feed approximately 1,158.6 grams into a dry 5-liter one-piece reactor equipped with a mechanical stirrer with a 0.25" stainless steel stirrer assembly, glycol column, distillation head, condenser, receiver, nitrogen purge, and thermocouple Isophthalic acid, 720.9 grams of diethylene glycol, 398.3 grams of ethylene glycol, and 0.409 grams of FASCAT TM 9100. The reactor contents were vacuum degassed and nitrogen purged three times,...

Embodiment 1

[0136] Embodiment 1. A solvent-based adhesive composition comprising:

[0137] (A) polyester-urethane resin;

[0138] (B) epoxy-terminated polyester compounds;

[0139] (C) phosphoric acid; and

[0140] (D) Aliphatic isocyanate curing agent.

Embodiment 2

[0141] Embodiment 2. The solvent-based adhesive composition of any preceding or following embodiment, wherein the polyester-urethane resin is the reaction product of a polyester polyol and an isocyanate.

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Abstract

Solvent-based adhesive composition is disclosed, the composition comprising (A) a polyester-urethane resin, (B) an epoxy-terminated polyester compound, (C) a phosphoric acid, and (D) an aliphatic isocyanate curing agent. A method for preparing a solvent-based adhesive composition is disclosed. The method comprises providing a polyester-urethane resin, providing an epoxy-terminated polyester compound, mixing the polyester-urethane resin, epoxy-terminated polyester compound, and phosphoric acid to form a resin mixture, diluting the resin mixture in a solvent to form a diluted resin mixture having an application solid content from 25 to 55 weight percent, based on the total weight of the diluted resin mixture, and curing the diluted resin mixture with an aliphatic isocyanate curing agent at amix ratio (parts by weight resin mixture before dilution: parts by weight aliphatic isocyanate curing agent) of from 100:1 to 100:12. Laminates prepared comprising the solvent-based adhesives and according to the disclosed methods are also disclosed.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent No. 62 / 517,439, filed June 9, 2017. technical field [0003] The present disclosure relates to solvent-based adhesive compositions. More specifically, the present disclosure relates to solvent-based adhesive compositions for applications such as high-performance laminating adhesives that exhibit improved adhesion to metal structures, such as foils, and improved thermal and chemical resistance sex. The solvent-based adhesive composition comprises a polyester-urethane resin modified with an epoxy-terminated polyester compound, phosphoric acid, and an aliphatic isocyanate curing agent. The present disclosure further relates to methods for preparing such solvent-based adhesive compositions. Background technique [0004] Adhesive compositions are suitable for a wide variety of purposes. For example, some adhesives are used to adhere the layers of the substr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/58C09J175/06C08L75/06C08L101/02
CPCC08G18/581C09J175/06C08L75/06C08L63/00B32B7/12B32B15/085B32B2250/02C08G18/3228C08G63/16C08G63/91C08K3/32C08K5/06C08K2003/329B32B15/09B32B15/095B32B27/32B32B27/36B32B27/38B32B27/08B32B27/40
Inventor 李文文J·J·鲁潘科克W·J·哈里斯P·克拉克T·施密特
Owner DOW GLOBAL TECH LLC