Method of dissociating an organoborane-amine complex
First Claim
1. A method of forming a coating composition, said method comprising the steps of:
- A. introducing an organoborane-amine complex, a radical polymerizable compound, and optionally an amine onto a substrate to form a coating composition;
B. introducing carbon dioxide into the coating composition in a molar ratio of at least 1;
1 of the carbon dioxide to free amine groups present in the coating composition;
C. reacting the carbon dioxide and the free amine groups to form a carbamic zwitterion in-situ and to dissociate the organoborane-amine complex thereby forming a radical; and
D. polymerizing the radical polymerizable compound using the radical.
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Abstract
A method of dissociating an organoborane-amine complex in a coating composition is provided. The method includes the step of introducing the organoborane-amine complex, the radical polymerizable compound, and optionally an amine, onto a substrate to form the coating composition. The method also includes the step of introducing carbon dioxide into the coating composition in a molar ratio of at least 1:1 of the carbon dioxide to free amine groups present in the coating composition. More specifically, a carbamic zwitterion is formed in-situ from reaction of the carbon dioxide and the free amine groups. The formation of the carbamic zwitterion leads to dissociation of the organoborane-amine complex and formation of a radical. The radical is then used to polymerize the radical polymerizable compound.
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Citations
21 Claims
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1. A method of forming a coating composition, said method comprising the steps of:
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A. introducing an organoborane-amine complex, a radical polymerizable compound, and optionally an amine onto a substrate to form a coating composition; B. introducing carbon dioxide into the coating composition in a molar ratio of at least 1;
1 of the carbon dioxide to free amine groups present in the coating composition;C. reacting the carbon dioxide and the free amine groups to form a carbamic zwitterion in-situ and to dissociate the organoborane-amine complex thereby forming a radical; and D. polymerizing the radical polymerizable compound using the radical. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of forming a coating composition, said method comprising the steps of:
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A. introducing an organoborane-amine complex, a radical polymerizable compound, carbon dioxide and optionally an amine onto a substrate to form a coating composition and wherein a molar ratio of at least 1;
1 of the carbon dioxide to free amine groups present in the coating composition;B. reacting the carbon dioxide and the free amine groups to form a carbamic zwitterion in-situ and to dissociate the organoborane-amine complex thereby forming a radical; and C. polymerizing the radical polymerizable compound using the radical.
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Specification