US 6,432,191 B1 · Silane-based, coating compositions, coated articles obtained therefrom and methods of using same

Abstract

Silane based coating compositions provide durable, corrosion resistant coatings on metal and non-metal surfaces. A typical composition may include one or a mixture of silanes, such as methyltrimethoxysilane and phenyltrimethoxysilane. The coating compositions may be formulated with either acidic or basic catalysts, the latter being especially suitable for coating steel substrates. Coatings for food and beverage containers, automotive finishes, HVAC surfaces, alkali metal silicates, concrete, and the like, are described. Primer coating compositions which include two or more polyfunctional organosilanes but no monofunctional organosilanes provide strongly adherent corrosion resistant primer coatings for metals and are very adherent to polyurethane, epoxy and other resin topcoats.

Claims26

Dependent claims

An aqueous coating composition formed by admixing

(A) at least one silane of the formula (1)
R1Si(OR2)3 (1)
wherein
R1 is a C1-C6 alkyl group, a phenyl group or a functional group containing at least one of vinyl, acrylic, amino, mercapto, or vinyl chloride functional group;
and
R2 is a C1-C6 alkyl group;
(C) acid component comprising a member selected from the group consisting of water-soluble organic acids, H3BO3 and H3PO3;
and
(D) water and further comprising a silane compound of formula (4):
X[R1Si(OR2)3]2 (4)
where R1 and R2 are as defined above, and X represents an amino group or keto group

8 more elements

Dependencies are inferred from the claim text.

Silane-based, coating compositions, coated articles obtained therefrom and methods of using same

Life of this patent

Silane-based, coating compositions, coated articles obtained therefrom and methods of using same

Life of this patent

Abstract

Claims26