METHOD OF DISSOCIATING AN ORGANOBORANE-AMINE COMPLEX

    公开(公告)号:SG176752A1

    公开(公告)日:2012-01-30

    申请号:SG2011091113

    申请日:2010-06-24

    Applicant: BASF SE

    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.

    METHOD OF FORMING A CURED COATING COMPOSITION ON AN AUTOMOBILE COMPONENT

    公开(公告)号:SG176749A1

    公开(公告)日:2012-01-30

    申请号:SG2011091089

    申请日:2010-06-24

    Applicant: BASF SE

    Abstract: A method of forming a cured coating composition on an automobile component is provided. The method utilizes a coating compound including a radical polymerizable compound and an organoborane initiator and includes the step of applying the coating composition to the automobile component. The organoborane initiator is complexed with a bi-functional noncyclic blocking agent that has a carbon backbone and two organoborane complexing moieties. The two moieties are different from each other and are selected from the group of an amine moiety, a thiol moiety, and a phosphine moiety. In addition, the two moieties are separated from each other by two to four carbon atoms to increase the nucleophilicity of the blocking agent towards the organoborane initiator. The organoborane initiator is decomplexed from the blocking agent thereby forming a radical that is used to polymerize the radical polymerizable compound and cure the coating composition on the automobile component.

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