Substrate coated or impregnated with flexible epoxy composition
AssigneeMinnesota Mining and Manufacturing Company
InventorsKevin E. Kinzer, Lowell W. Holland, Krishnamurthy Sridhar, James N. Kellen, Richard W. Pribnow
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Abstract
The present invention relates to an article comprising a substrate which has coated thereon a photopolymerizable epoxy composition containing a plurality of epoxides including at least one selected from the group consisting of bisphenol A epoxides and cycloaliphatic epoxides, and at least one aliphatic epoxide, from about 0.1% to about 2% of at least one organometallic cationic initiator capable of initiating polymerization at wavelengths of from about 200 to about 600 nm, and optionally at least one accelerating agent. The article can be a flexible tape backing or a chip-resistant paint.
Claims7
An article comprising a substrate which has coated thereon a photopolymerizable epoxy composition consisting essentially of:
- a) at least one epoxide selected from the group consisting of cycloaliphatic epoxides, and at least one epoxide selected from the group consisting of acyclic aliphatic epoxides, and
- b) from about 0.1 to about 2% by weight of at least one ionic salt of an organometallic cationic photoinitiator capable of initiating polymerization at wavelengths of from about 200 to about 600 nm,
- wherein said photopolymerizable epoxy composition is cured to form a chip resistant coating or paint on said substrate.
A paint film consisting essentially of:
- a) at least one epoxide Selected from the group consisting of cycloaliphatic epoxides, and at least one epoxide selected from the group consisting of acyclic aliphatic epoxides, and
- b) from about 0.1 to about 2% by weight of at least one ionic salt of an organometallic cationic photoinitiator capable of initiating polymerization at wavelengths of from about 200 to about 600 nm,
- wherein said film is cured to form a coating having controlled flexibility and chip resistance.
A chip-resistant paint film comprising a photopolymerizable epoxy composition consisting essentially of
- a) at least one epoxide selected from the group consisting of cycloaliphatic epoxides, and at least one epoxide selected from the group consisting of acyclic aliphatic epoxides, and
- b) from about 0.1 to about 2% by weight of at least one ionic salt of an organometallic cationic photoinitiator capable of initiating polymerization at wavelengths of from about 200 to about 600 nm.
An article comprising a substrate having coated on at least a portion thereof a photopolymerizable epoxy composition consisting essentially of:
- a) at least one epoxide selected from the group consisting of cycloaliphatic epoxides, and at least one epoxide selected from the group consisting of acyclic aliphatic epoxides,
- b) from about 0.1 to about 2% by weight of at least one ionic salt of an organometallic cationic photoinitiator capable of initiating polymerization at wavelengths of from about 200 to about 600 nm, and
- c) at least one of accelerating agents, fillers, plasticizers, pigments, antioxidants, and surface modifying agents,
- wherein said epoxy composition is cured to form a chip resistant coating or paint.
Dependencies are inferred from the claim text.