Benzoxazines, thermosetting resins comprised thereof, and methods for use thereof
First Claim
1. A thermosetting resin composition for adhering materials with dissimiliar coefficients or thermal expansion, consisting essentially of:
- a) a benzoxazine compound in liquid form at room temperature,b) one or more thermoset compounds selected from the group consisting of epoxy, cyanate ester, maleimide, acrylate, methacrylate, vinyl ether, styrenic, vinyl ester, propargyl ether, diallylamide, aromatic acetylene, benzocyclobutene, thiolenes, maleate, oxazoline, and itaconate,c) optionally, one or more anti-oxidants, bleed control agents, fillers, diluents, coupling agents, adhesion promoters, flexibilizers, dyes and pigments, andd) a cure initiator.
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Accused Products
Abstract
In accordance with the present invention, there are provided novel benzoxazine compounds and thermosetting resin compositions prepared therefrom. Invention compositions are particularly useful for increasing adhesion at interfaces within microelectronic packages. Invention benzoxazines are useful for the preparation of invention compositions with properties which are associated with increased adhesion at interfaces, such as, for example, low shrinkage on cure and low coefficient of thermal expansion (CTE). In another aspect of the invention, there are provided die-attach pastes having increased interfacial adhesion. Invention die-attach pastes include benzoxazine-containing thermosetting resin compositions. In further aspects of the invention, there are provided methods for enhancing adhesive strength of thermosetting resin compositions and methods for enhancing adhesion of a substrate bound to a metallic surface by a thermosetting resin composition.
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Citations
13 Claims
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1. A thermosetting resin composition for adhering materials with dissimiliar coefficients or thermal expansion, consisting essentially of:
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a) a benzoxazine compound in liquid form at room temperature, b) one or more thermoset compounds selected from the group consisting of epoxy, cyanate ester, maleimide, acrylate, methacrylate, vinyl ether, styrenic, vinyl ester, propargyl ether, diallylamide, aromatic acetylene, benzocyclobutene, thiolenes, maleate, oxazoline, and itaconate, c) optionally, one or more anti-oxidants, bleed control agents, fillers, diluents, coupling agents, adhesion promoters, flexibilizers, dyes and pigments, and d) a cure initiator. - View Dependent Claims (9, 10, 11, 12, 13)
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2. A method for enhancing adhesive strength of a thermosetting resin composition between materials with dissimiliar coefficients of thermal expansion, said method consisting essentially of the step of:
incorporating an effective amount of a benzoxazine compound in liquid form at room temperature into a composition comprising one or more thermoset compounds selected from the group consisting of epoxy, cyanate ester, maleimide, acrylate, methacrylate, vinyl ether, styrenic, vinyl ester, propargyl ether, diallylamide, aromatic acetylene, benzocyclobutene, thiolenes, maleate, oxazoline, and itaconate;
optionally, one or more anti-oxidants, bleed control agents, fillers, diluents, coupling agents, adhesion promoters, flexibilizers, dyes and pigments, and a cure initiator.- View Dependent Claims (3, 4, 5, 6, 7, 8)
Specification