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US 5,395,879 AGranted
Water-based adhesive
AssigneeAkron Paint & Varnish
InventorRobert J. Murray
Life of this patent
Estimating the term…
Abstract
The present invention provides an organic solvent-free composition useful as an adhesive for bonding natural rubber compounds, synthetic rubber compounds and a combination of natural and synthetic rubber compounds, especially during the formation of a tire.
Claims7
A composition having no organic solvents contained therein, said composition useful as an adhesive and comprising by weight percent based on total weight of said composition:
- about 35.0 to 50.0% of an elastomer selected from the group consisting of natural rubber, styrene butadiene rubber, polybutadiene rubber and mixtures thereof;
- about 40.0 to 60.0% water;
- about 0.02 to 0.60% pH adjusters selected from the from the group consisting of potassium hydroxide, aqueous ammonia and mixtures thereof;
- about 0.10 to 1.8% surfactant/stabilizer selected from the group consisting of sodium lignosulfate, octylphenoxypolyethoxyethanol, polyoxyethylene sorbitrol fatty acid ester, sulfated fatty acid and mixtures thereof;
- about 0.5 to 5.0% carbon black selected from the group consisting of N-300 and N-200 series and mixtures thereof;
- about 0.02 to 0.75% zinc oxide;
- about 0.01 to 0.40% sulfur;
- and
- about 0.005 to 0.20% accelerator selected from the group consisting of dibenzothiazyl disulfide, tetraethyl thiuram disulfide, tetramethyl thiuram disulfide, tetramethyl thiuram monosulfide, n-tert-butyl-2-benzothiazolesulfenamide, diphenyl guanidine and mixtures thereof.
6 more elements
An article of manufacture, having applied thereupon a composition comprising by weight percent based on total weight of said composition:
- about 35.0 to 50.0% of an elastomer selected from the group consisting of natural rubber, styrene butadiene rubber, polybutadiene rubber and mixtures thereof;
- about 40.0 to 60.0% water;
- about 0.02 to 0.60% pH adjusters selected from the from the group consisting of potassium hydroxide, aqueous ammonia and mixtures thereof;
- about 0.10 to 1.8% surfactant/stabilizer selected from the group consisting of sodium lignosulfate, octylphenoxypolyethoxyethanol, polyoxyethylene sorbitrol fatty acid ester, sulfated fatty acid and mixtures thereof;
- about 0.5 to 5.0% carbon black selected from the group consisting of N-300 and N-200 series and mixtures thereof;
- about 0.02 to 0.75% zinc oxide;
- about 0.01 to 0.40% sulfur;
- and
- about 0.005 to 0.20% accelerator selected from the group consisting of dibenzothiazyl disulfide, tetraethyl thiuram disulfide, tetramethyl thiuram disulfide, tetramethyl thiuram monosulfide, n-tert-butyl-2benzothiazolesulfenamide, diphenyl guanidine and mixtures thereof.
6 more elements
Dependencies are inferred from the claim text.