Substrates with flexible coatings from epsilon-caprolactone modified acrylics

A method of coating a continuous substrate having plastic and metal sections with a plurality of flexible coatings comprising:

• (a) applying to said substrate a first coating composition comprising about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, said epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000 hydroxyl contents from about 1 to 7% by weight, and about 0.25 to 6 moles of epsilon-caprolactone per mole of hydroxyl in the polymer, said coating composition having a solids content of about 35 to 68% by weight and a liquid carrier of about 32 to 65% by weight and further comprising about 0.5 to 150% by weight pigments based on said solids content;
• (b) flashing off said liquid carrier to form a pigmented layer;
• (c) applying wet-on-wet a second coating composition comprising about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, said epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000, hydroxyl cont:ents from about 1 to 7% by weight, and about 0.25 to 6 moles of epsilon-caprolactone per mole of hydroxyl in the polymer, said coating composition having a solids content of about 35 to 68% and a liquid carrier of about 32, to 65% by weight;
• and
• (d) curing said multiple coating to said substrate.

A method of coating a continuous substrate having plastic and metal sections with a plurality of flexible coatings comprising:

• (a) applying to said substrate a first coating composition comprising about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, said epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000, hydroxyl contents from about 1 to 7% by weight, and about 0.25 to 6 moles of epsilon-caprolactone per mole of hydroxyl in the polymer, said coating composition having a solids content of about 35 to 68% by weight and a liquid carrier of about 32 to 65% by weight and further comprising about 10 to 40% by weight of pigment having electrically conductive properties based on said solids content;
• (b) flashing off said liquid carrier and curing at 82.degree.-193.degree. C. to form an electrically conductive primer layer;
• (c) applying a second coating composition comprising about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, said epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000, hydroxyl contents from about 1 to 7% by weight, and about 0.25 to 6 moles of epsilon-caprolactone per mole of hydroxyl in the polymer, said coating Composition having a solids content of about 35 to 68% by weight and a liquid carrier of about 32 to 65% by weight and further comprising about 0.5 to 150% by weight pigments based on said solids content;
• (d) flashing off said liquid carrier of (c) to form a pigmented base coat layer;
• (e) applying wet-on-wet a third coating composition comprising about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, said epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000, hydroxyl contents from about 1 to 7% by weight, and about 0.25 to 6 moles of epsilon-caprolactone per mole of hydroxyl in the polymer, said coating composition having a solids content of about 35 to 68% by weight, and a liquid carrier of about 32 to 65% by weight;
• and
• (f) curing said multiple coating to said substrate.

A coated article comprising:

• (a) a continuous substrate having plastic and metal sections;
• (b) a base coat layer applied to said substrate having a thickness of about 0.4 to 1.5 mils and comprising about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, said epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000, hydroxyl contents from about 1 to 7% by weight, and about 0.25 to 6 moles of epsilon-caprolactone per mole of hydroxyl in the polymer and about 0.5 to 150% by weight of pigments based on the weight of said polymer;
• and
• (c) a clear top coat layer applied to said base coat layer having a thickness of about 0.8 to 2.5 mils and comprising about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, said epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000, hydroxyl contents from about 1 to 7% by weight, and about 0.25 to 6 moles of epsilon-caprolactone per mole of hydroxyl in the polymer.

A coated article comprising:

• (a) a continuous substrate having plastic and metal sections;
• (b) a primer coat layer applied to said substrate having a thickness of about 0.6 to 1.0 mils and comprising about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, said epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000, hydroxyl contents from about 1 to 7% by weight, and about 0.25 to 6 moles of epsilon-caprolactone per mole of hydroxyl in the polymer and about 10 to 40% by weight of pigment having electrically conductive properties based on the weight of said polymer;
• (c) a base coat layer applied to said primer coat layer having a thickness of about 0.4 to 1.5 mils and comprising about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, said epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000, hydroxyl contents from about 1 to 7% by weight, and about 0.25 to 6 moles of epsilon-caprolactone per mole of hydroxyl in the polymer and about 0.5 to 150% by weight of pigments based on the weight of said polymer;
• and
• (d) a clear top coat layer applied to said base coat layer having a thickness of about 0.8 to 2.5 mils and comprising about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, said epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000, hydroxyl contents from about 1 to 7% by weight, and about 0.25 to 6 moles of epsilon-caprolactcne per mole of hydroxyl in the polymer.