Solvent-based adhesive compositions
A technology of adhesives, compositions, applied in the direction of adhesive types, polyurea/polyurethane adhesives, adhesives, etc.
Active Publication Date: 2020-03-24
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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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0105] Example 1. A solvent-based adhesive composition comprising:
[0106] (A) polyester-urethane resin;
[0107] (B) phosphate compounds; and
[0108] (C) Aliphatic isocyanate curing agent.
Embodiment 2
[0109] 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.
Embodiment 3
[0110] Embodiment 3. The solvent-based adhesive composition of any preceding or subsequent embodiment, wherein the polyester-urethane resin accounts for the total of the polyester-urethane resin (A) and the phosphate ester (B). 65 to 99.5 weight percent of the total weight.
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Abstract
Solvent-based adhesive composition are disclosed, the compositions comprising (A) a polyester-urethane resin, (B) a phosphate ester compound, and (C) an aliphatic isocyanate curing agent. Methods forpreparing a solvent-based adhesive composition, the methods comprising providing a polyester-urethane resin, providing a phosphate ester compound, mixing the polyester-urethane resin and phosphate ester compound to form a resin mixture, diluting the resin mixture in a solvent to form a diluted resin mixture having an application solid content of 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 a mix 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] References to related applications [0002] This application claims the benefit of U.S. Provisional Application No. 62 / 512,993, filed May 31, 2017. technical field [0003] The present invention relates to solvent-based adhesive compositions. More particularly, the present invention 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 heat resistance and chemical resistance. The solvent-based adhesive composition includes a polyester-urethane resin modified with a phosphate compound and an aliphatic isocyanate curing agent. The invention further relates to methods for preparing such solvent-based adhesive compositions. Background technique [0004] Adhesive compositions are suitable for various purposes. For example, some adhesives are used to adhere layers of a substrate together, thereby forming a layered structure comprising tw...
Claims
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IPC IPC(8): C08G18/50C08G18/76C08G18/12C09J175/06
CPCC08G18/5084C08G18/509C08G18/7671C08G18/12C09J175/06C08G18/73C08G18/74
Inventor 李文文J·J·鲁潘科克P·克拉克T·施密特
Owner DOW GLOBAL TECH LLC