Illinois Tool Works Inc.

Mona Kulkarni

Subodh Deshpande

Nagesh Chitnavis

Gregory R Schulz

Daniel K Doe

Peter A Carbutt

Zeenat F Imam

Tushar Sontakke

Dave Bongiorni

Nader Sahawneh

Nader Sawhawneh

A process of applying an adhesive to an elastomer includes the application to the elastomer of a two part adhesive formulation. The adhesive having a Part A including at least a polyol, an adhesion promoter, a chain extender, a catalyst, a water scavenger; and a Part B comprising: polyurethane prepolymer, adhesion promoter and a plasticizer. The two part adhesive formulation is cured to form the adhesive. In contrast to the prior art, no priming or surface activation is required to obtain a high strength bond to the elastomer. The resulting article of an elastomer with the resultant adhesive is sufficiently strong to result in surface peel off of the elastomer. A kit is provided for the repair of an elastomer without resort to priming the elastomer.

Primer-less two component polyurethane adhesive

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 acrylic-polyurethane hybrid sealant composition is provided with desirable physical and mechanical properties such as superior adhesion, tensile strength, rheology and bond strength. In particular, the sealant composition of the invention is formulated with isocyanate modified acrylic polymer The composition includes an acrylic pre-polymer, an isocyante functional monomer, a triacrylate as a cross-linker, and a catalyst. A process for preparing the composition is also provided. The hybrid sealant composition is well suited for sealing and bonding requirements in fabrication of articles such as window glazing, back bedding, construction, aerospace and appliances industries. A hybrid sealant composition is provided that develops adequate adhesion and bond strength equivalent to commercially available sealants when used in sealing and bonding applications and is readily formulated to be self-leveling. Articles so fabricated using the hybrid sealant composition are also provided.

Hybrid sealant composition

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Andhra Pradesh, India

Mona Kulkarni