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US 12,674,081 B2Granted
Compositions, articles, and methods involving pressure-sensitive adhesives comprising polymer-grafted particles
AssigneesMassachusetts Institute of Technology, Tesa SE
InventorsRobert J. Macfarlane, Griffen Desroches, Jacob Przyojski
Life of this patent
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Abstract
Compositions, articles, and methods involving pressure-sensitive adhesives comprising polymer-grafted particles are generally described.
Claims16
A composition comprising:
- a pressure-sensitive adhesive comprising polymer-grafted particles and one or more base polymer components,
- wherein the polymer-grafted particles are selected in conjunction with the pressure-sensitive adhesive such that the polymer-grafted particles are capable of interacting with at least one component of the pressure-sensitive adhesive, resulting in an increase in cohesive strength of the pressure-sensitive adhesive without a loss of adhesive strength as compared to an essentially identical composition that is otherwise equivalent but does not include the polymer-grafted particles under essentially identical conditions, and
- wherein at least two polymer chains of the polymer-grafted particles are non-covalently bound to the one or more base polymer components.
An article, comprising:
- one or more substrates;
- and
- a pressure-sensitive adhesive comprising polymer-grafted particles,
- wherein the polymer-grafted particles are selected in conjunction with the pressure-sensitive adhesive such that the polymer-grafted particles are capable of interacting with at least one component of the pressure-sensitive adhesive, resulting in an increase in cohesive strength of the pressure-sensitive adhesive without a loss of adhesive strength as compared to an essentially identical composition that is otherwise equivalent but does not include the polymer-grafted particles under essentially identical conditions,
- wherein a dynamic overlap shear strength of the pressure-sensitive adhesive is between greater than or equal to 110% and less than or equal to 150% of a dynamic overlap shear strength of an essentially identical pressure-sensitive adhesive that is otherwise equivalent but does not include the polymer-grafted particles under essentially identical conditions.
2 more elements
An article, comprising:
- one or more substrates;
- and
- a pressure-sensitive adhesive comprising polymer-grafted particles,
- wherein the polymer-grafted particles are selected in conjunction with the pressure-sensitive adhesive such that the polymer-grafted particles are capable of interacting with at least one component of the pressure-sensitive adhesive, resulting in an increase in cohesive strength of the pressure-sensitive adhesive without a loss of adhesive strength as compared to an essentially identical composition that is otherwise equivalent but does not include the polymer-grafted particles under essentially identical conditions,
- wherein an adhesion time of the pressure-sensitive adhesive prior to failure under a static load is between greater than or equal to 1.2 times and less than or equal to 4 times greater than an adhesion time of an essentially identical pressure-sensitive adhesive that is otherwise equivalent but does not include the polymer-grafted particles under essentially identical conditions.
2 more elements
Dependencies are inferred from the claim text.