Elastomeric structures having controlled surface release characteristics
AssigneeBridgestone/Firestone, Inc.
InventorsCleo M. Williams, Myron D. Sanders, William C. Cook
Life of this patent
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Abstract
Elastomer structures having exposed controlled surface release characteristics can be made by coating at least a portion of their surface with a releasing composition comprising (a) a chlorosulphonated polymer; (b) a reinforcing filler and (c) a green tackifying agent. Optionally, these compositions can also contain a chemical curing system and one or more volatile solvent/diluent viscosity-reducing vehicle. In a specific example, the coating are applied to flexible structures used in machines for the manufacture of articles having natural tack due to their rubber or elastomer content.
Claims11
An elastomeric structure with a fracture-resistant, releasing exposed surface coating of release-effective thickness for an elastomeric structure formed by the method which comprises the steps of:
- (I) Applying to at least a portion of the surface of the structure a releasing composition comprising:
- (a) a chlorosulfonated polyethylene;
- (b) a reinforcing filler;
- (c) a green tackifying agent;
- and optionally
- (d) a suitable chemical curing system;
- and, optionally,
- (e) a first inert, volatile solvent/diluent viscosity-reducing vehicle for components (a)-(d);
- and, optionally,
- (f) a second inert, volatile solvent/diluent viscosity-reducing vehicle;
- (II) Removing a sufficient amount of the vehicles present to leave a coherent, adhering film on the surface;
- and
- (III) Curing the film to form the exposed releasing coating.
An elastomeric structure with a fracture resistant, exposed releasing surface coating of release effective thickness formed by the method which comprised the steps of:
- (I) applying Chemlok 234B or 234B-E in an inert solvent/diluent vehicle to at least a portion of the surface of the structure.
- (II) removing an evaporation at about 20.degree.-75.degree. a sufficient amount of the vehicle present to leave a coherent, adhering film on the surface;
- and
- (III) curing the film.
Dependencies are inferred from the claim text.