Illinois Tool Works Inc.

Peter A Carbutt

Subodh Deshpande

Daniel K Doe

Nagesh Chitnavis

Gregory R Schulz

Mona Kulkarni

Jeffrey V Gasa

Welkin Li

Ajay Khongal

Prashant Koshti

Brajesh Shukla

Don Gosiewski

Dan Doe

Camus Weng

Frank Zhao

Katherine P Scacchi

Salvatore N Parisi

A two part composition formulation is provided with a composition part A including a phenol novolac epoxy in combination with a bisphenol F epoxy, bisphenol A epoxy, or a combination thereof that define a base resin. A resorcinol diglycidyl ether present is present in part A in a ratio of 1.5-25:1 relative to the base resin. A part A inorganic particulate has x-y-z average linear dimension of between 500 and 6,000 microns. An activator part B includes a curative operative to cure the base resin and the resorcinol diglycidyl ether along with a part B inorganic particulate has x-y-z average linear dimension of between 500 and 6,000 microns. A coating is obtained upon mixing and cure in contact with a substrate to form a corrosion and abrasion resistant structure. A process of forming such a structure is also provided.

Epoxy coating composition with elevated temperature and abrasive environment performace and uses thereof

An adhesive composition is provided that includes a block copolymer present at greater than or equal to 30 total weight percent of the adhesive system comprising a high glass transition temperature in subunits Y and Y', each of the subunits Y and Y&#x2032; having a high glass transition temperature of from 70&#xb0; C. to 130&#xb0; C. with a low glass transition temperature subunit Z having a low glass transition temperature of from &#x2212;100&#xb0; C. to 10&#xb0; C. intermediate between said high glass transition temperature acrylate subunits to define a structure Y-Z-Y&#x2032;. The triblock copolymer is dissolved in a monomer curable under free radical. A free radical initiator of a peroxide or a hydroperoxide are present in combination with a sulfonyl chloride, dihydropyridine and copper or vanadium salt. By heating the cured adhesive at or above 70&#xb0; C., the adhesive is amenable to being removed, repaired, or reworked.

Adhesive compositions with repair-rework ability

A two part adhesive formulation is provided that has an adhesive part including methylmethacrylate monomer, an antioxidant, a cure inhibitor, and a polyfunctional monomer amount of dimethacrylate monomer, trimethacrylate monomer, or a combination thereof. An activator part includes methylmethacrylate monomer, and a cure accelerator. A toughening agent and an impact modifier in at least one of the adhesive part or the activator part. The adhesive formulation is well suited for forming a wind turbine blade from two or more substrates.

Methacrylate structural adhesive formulation and process for the use thereof

A two-part adhesive formulation is provided that has an adhesive part A and an activator part B. The part A includes a monomer amount of a methacrylate ester monomer, a crosslinker amount of a polyfunctional monomer, an anti-oxidant, a free-radical polymerization inhibitor, and an adhesion promoter system to improve cured adhesive strength to a substrate, an impact modifier and a toughening agent and a free-radical polymerization initiator. The part B includes an impact modifier, butyl rubber, methacrylate ester monomer, and a free-radical polymerization accelerator yet varies in the weight ratio used relative to part A. Each of the part A and the part B have separate storage stability of at least 300 days at 23&#xb0; C. A process of applying an adhesive to a substrate is provided that includes combining together parts A and B to form an adhesive mixture and applying the mixture to the substrate and allowed to cure.

Galvanized metal bonding adhesive formulation and process for the use thereof

An adhesive two-part formulation is provided that includes an amount of free-radical curable monomers, each of said monomers containing at least one acrylate moiety. Also preset in the formulation is an amount of a chlorosulfonated polymer; a Lewis acid; a polyfunctional monomer amount of dimethacrylate monomer, trimethacrylate monomer, an elastomer, a thermoplastic additive, or a combination thereof. A borane-amine complex is provided as an activator. A process of applying the formulation to a substrate includes mixing together the formulation components such that each part has a storage stability at 50&#xb0; C. for 30 days where the viscosity at 30 days is within 40% of an initial viscosity. The mixture is applied to the substrate and then allowed to cure to achieve an initial strength of at least 345 kiloPascals (kPa) within 30 minutes and 40 minutes for adhesive:activator weight ratio of 1:1 and 10:1, respectively.

Low surface energy bonding adhesive formulation and process for the use thereof

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Groton, MA, United States of America

Peter A Carbutt