Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1976-02-04
1977-07-12
Herbert, Jr., Thomas J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
106 15R, 114 69, 156 71, 428215, 428335, 428343, 428354, 428355, B32B 702, C03C 1700
Patent
active
040355462
ABSTRACT:
A strippable covering for protecting marine structures from fouling in contact with water which comprises a sheet-like water-insoluble base prepared from a synthetic, thermoplastic polymeric material selected from the group consisting of polyvinyl acetate, polyvinyl chloride and polyethylene, said base ranging in thickness from 4 to 8 mils and coated on one side thereof with a water insoluble, acrylic adhesive material comprising homopolymers and copolymers of acrylic acid and acid esters, said adhesive material ranging in thickness from about 0.5 to 2 mils, said base coated on the opposite side thereof with an anti-foulant film-forming composition comprising a film-forming ingredient consisting of polyvinyl chloride and wood rosin present in the amount of 11-17% by weight, a pigment component comprising an anti-foulant including cuprous oxide, iron oxide, tin fluoride, and possibly other organo-metallic anti-foulant materials, said pigment further comprising as an anti-foulant ingredient an aromatic bituminous material of a resinous nature such as coal tar or the like, said pigment component present in an amount of about 52% by weight, a diluent or solvent selected from the group consisting of aromatic hydrocarbons, ketones and mixtures thereof, said solvent present in an amount of about 32% by weight and a plasticizer present in an amount of about 2% by weight, said plasticizer selected from the group consisting of tricresyl-phosphate, alkylphthalates, triphenyl phosphate and mixtures thereof. The covering of the present invention provides effective protection against corrosion and attack by marine organisms yet is easily removable at the end of a season before replacement with a like covering material without the need for costly and time-consuming scraping procedures.
REFERENCES:
patent: 3761334 (1973-09-01), Zondex
patent: 3845005 (1974-10-01), Freiman
patent: 3861949 (1975-01-01), Onozuka et al.
patent: 3892699 (1975-01-01), Weisse
patent: 3922186 (1975-11-01), Segawa et al.
patent: 3990381 (1976-11-01), Shepherd et al.
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