Xl Corporation

Other

John W Braud

Helen Grace Gilbreath

A method for producing a fast drying high solids adhesive wherein a water based polymer emulsion (latex) is modified with unemulsified elasticizing oils and reinforcing-tackifying resins to produce a stable emulsion of polymer, oil and resin without the use of additional emulsifiers or volatile organic solvents. When packaged in pressurizable canisters along with a suitable propellant, the adhesive may be sprayed through a suitable nozzle and deposited in a thin layer to form an adhesive film which has excellent bonding characteristics for many laminates such as fabric or textiles, wood, plastics, metals and rubber, and for adhering flooring materials such as carpet, linoleum, tiles and artificial grass to a variety of substrates.

Water based high solids adhesives and adhesive application system

A method for producing a fast drying high solids adhesive and the adhesive composition are described herein whereby a water based polymer emulsion known as latex is modified with unemulsified plasticizing oils and reinforcing-tackifying resins, and a stable final emulsion of polymer, oil and resin is achieved without the use of additional emulsifiers or volatile organic solvents. The method takes advantage of the inherent solubility of the oils and resins in the polymer and of the emulsion-stabilizing effects of the selected resins, and the resultant product has excellent adhesive characteristics such as fast drying, improved water resistance, improved freeze resistance, high bond strength and no volatile organic compounds. Additionally, the product of this invention is resistant to coagulation by nitrogen, pentane, chlorofluorocarbons and many similar products used as propellants in the production of internally pressurized canisters of adhesives generically known as aerosol adhesives, and thus, when packaged in pressurizable canisters along with a suitable propellant, the product of this invention may be sprayed through a suitable nozzle and deposited in a thin layer to form an adhesive film which has excellent bonding characteristics for many laminates such as fabric or textiles, wood, plastics, metals and rubber, and for adhering flooring materials such as carpet, linoleum, tiles and artificial grass to appropriate substrates such as wood, concrete and many others.

A method of producing a high solids adhesive is provided wherein a buffered latex emulsion, such as, for example, styrene butadiene latex emulsion buffered to a pH of 11.0 using caustic agents, is combined with a non-emulsified mixture of dissolving process oils and tackifying resins and mineral fillers. The resultant adhesive has a solids content greater than previously achieved in the industry and has exceptional adhesive characteristics such as increased bond strength, improved durability, better aging, faster drying, improved water resistance and improved freeze resistance. High solids content is achieved by taking advantage of the excess emulsifiers in the latex emulsion and adding the remaining constituent components directly to the stabilized latex emulsion.

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Dalton, GA, United States of America

John W Braud