One component composition containing a catalyst and having increased storability

A one component composition comprising:

• A) an acrylic resin having hydroxyl group,
• (B) an alkoxysilyl group-containing acrylic copolymer having a group represented by the formula:
• ##STR9## wherein R.sup.1 is an alkyl group having 1 to 10 carbon atoms, R.sup.2 is a hydrogen atom or a monovalent hydrocarbon group having 1 to 10 carbon atoms selected from the group consisting of an alkyl group, an aryl group and an aralkyl group, and a is 0, 1 or2.
• (C) a curing catalyst, and
• (E) a combination of effective amounts of methanol and butanol for stabilizing said composition and maintaining said composition in an uncured state for at least a week.

A one component composition capable of coating a substrate one week after mixing which comprises:

• (A) an acrylic resin having a hydroxyl group
• (B) an alkoxysilyl group-containing acrylic copolymer having a group represented by the formula:
• ##STR10## wherein R.sup.1 is an alkyl group having 1 to 10 carbon atoms, R.sup.2 is a hydrogen atom or a monovalent hydrocarbon group having 1 to 10 carbon atoms selected from the group consisting of an alkyl group, an aryl group and an aralkyl group, and a is 0, 1 or2,
• (C) an effective mount of a curing catalyst for curing said composition, and effective amounts of (D) a dehydrating agent and (E) an alkyl alcohol for stabilizing said composition.