Combustion Equipment Associates, Inc.

Other

Bic Corporation

Engineering Industries, Inc.

Richard S Brenneman

John J Clancy

Robert Snyder

Irving J Arons

Chaudhary M Ramzan

Alice H Pincus

Paul M Drennan

This discovery relates to an erasable ink composition that can be erased using an ordinary pencil eraser. It can be used in ball point pens. Other applicators can be used. Of course, the composition includes colorant and solvent. The combination of a thermoplastic elastomer and plasticizer components are important to the composition. The elastomer is a block copolymer, and the plasticizer is advantageously an ester. Other components include lubricant, resin and dispersant. Concentration ranges for the colorant is from 0.1% to 60%, for the thermoplastic elastomer is from 8% to 30%; for the plasticizer is from 10% to 35%; for the solvent is from 10% to 40%; for the resin is up to about 12%; for the lubricant is up to about 8% and for the dispersant is up to about 2%, all percent by weight of the composition. The colorant is conventional; the thermoplastic elastomer and plasticizer are not conventional. The thermoplastic elastomer is styrene-butadiene-styrene; styrene-isoprene-styrene or styrene-polyolefin-styrene. The latter thermoplastic elastomer is advantageous. The advantageous plasticizer is dioctyl adipate. The weight ratio of thermoplastic elastomer to plasticizer is 0.1 to 3.0. Other advantageous components are a polyterpene resin, lauric acid and methyl cyclohexane solvent. The latter component has a Hildebrand solubility range from 6.9 to 7.8 (cal./cm.sup.3).sup.1/2. This discovery also relates to a process of forming erasable script.

Erasable ink compositions

A coal tar emulsion driveway sealer is packaged in a sealed bag. The volume of sealer is less than half the capacity of the bag and the bag is substantially completely evacuated but for the sealer. The separated sealer is mixed by compressing the sides of the bag to induce turbulent flow of the paste and liquid for hydraulic mixing thereof. The sealer may be dispensed at a controlled rate without spattering by cutting a corner from the bag to provide a pour spout. The bag with the sealer may be contained in a carton. The bag membrane comprises an aluminum layer vapor deposited on polyester. Those two layers are sandwiched between layers of EVA copolymer.

Emulsion package and method of mixing the emulsion

A coal tar emulsion driveway sealer is packaged in a sealed bag. The volume of sealer is less than half the capacity of the bag and the bag is substantially completely evacuated but for the sealer. The separated sealer is mixed by compressing the sides of the bag to induce turbulent flow of the paste and liquid for hydraulic mixing thereof. The sealer may be dispensed at a controlled rate without spattering by cutting a corner from the bag to provide a pour spout. The bag with the sealer may be contained in a carton.

A process for treating the organic fraction of solid waste material with acid at an elevated temperature to form an embrittled material reducible to a powdered fuel having a caloric value and weight (on a dry basis) essentially equivalent to the waste material from which it was formed. The density of the fuel may be materially increased over that of the original waste material without the expenditure of excessive energy such as would be required in the grinding of untreated waste. The resulting fuel can be used alone or in combination with other fuels including fossil fuels in gas, liquid or solid form.

Growing community of inventors

Natick, MA, United States of America

Richard S Brenneman