Compositions – Leather or fur treating
Reexamination Certificate
1999-09-16
2001-02-20
Green, Anthony (Department: 1755)
Compositions
Leather or fur treating
C106S008000, C106S010000, C106S268000, C106S271000
Reexamination Certificate
active
06190572
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to the general field of polishing compositions, particularly, polishing compositions for the leather material found in shoes.
BACKGROUND OF THE INVENTION
Most conventional polishing compositions for leather or shoes are made by blending and melting wax with an organic solvent (e.g. alkanes). However, because of the flammability of the organic solvent, the manufacturing processes of these conventional polishing compositions are potentially dangerous and are capable of becoming harmful for the health of the operators. The organic solvents that escape from the manufacturing location of the polishing compositions during the manufacturing process also results in air pollution problems in the manufacturing area. Hence, an organic polishing composition without organic solvent is highly demanded in today's market.
In addition, most conventional polishing compositions are not convenient for use because fierce rubbing and frequent buffing is necessary to form the shining film. The films of conventional polishing composition phases out as organic solvents vaporize. To maintain the luster of the films, pigments sometimes are added into the conventional polishing compositions (or pastes) to enhance shining effect or colors of the conventional polishing compositions for leather. However, the cost of polishing compositions (or pastes) increases and the color difference between the color of the original leather and that which the pigment generates also increases.
Recently, liquid polishing compositions for leathers (shoes) were invented, but organic solvents are still the major solvents used for diluting liquid polishing compositions. As mentioned above, air pollution problems and flammable danger are still the major drawbacks of these liquid-polishing compositions. Besides, the gloss of the films formed from these liquid polishing compositions strongly depends on the concentration of wax in the liquid polishing composition. In liquid polishing compositions for spray coating or brush coating, the concentration of wax is diluted to a low concentration to facilitate coating. Consequently, the gloss of the films formed from liquid polishing composition fades a lot.
To improve the lost gloss of the films formed from liquid polishing composition with low concentration of wax, some resins or ethers are added into the polishing composition. But these resins or ethers will enhance the aging, peeling and hardening effect that is caused by organic solvent on leather (or shoes). Therefore, a safe polishing composition that will obtain high quality and lasting effect is in high demand.
SUMMARY OF THE INVENTION
The major objectives of the present invention are to provide a polishing composition for leather and for shoes without organic solvents.
Another objective of the present invention is to provide a polishing composition for leather and for shoes with less environmental pollution.
Another objective of the present invention is to provide a safe polishing composition for leather and for shoes with low flammability.
Another objective of the present invention is to provide a method to produce a polishing composition without organic solvents and without environmental pollution.
The polishing compositions of the present invention are comprised of an intermixture of a water phase and an oil phase. Finally the two phases are mixed together to form an emulsion.
REFERENCES:
patent: 4218250 (1980-08-01), Kasprzak
patent: 4497919 (1985-02-01), Varga et al.
patent: 5968238 (1999-10-01), Healy et al.
Bacon & Thomas
Green Anthony
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