Hydroxyl-terminated polymers

专利名称：Hydroxyl-terminated polymers

发明人：John M. Zimmerman,John J. Krajewski,Gerry

K. Noren

申请号：US06/601439申请日：19840418公开号：US04562235A公开日：19851231

摘要：There is disclosed linear polymers and copolymers of polymerized

monoethylenically unsaturated monomers having a weight average molecular weightfrom about 1,500 to about 15,000, with most of the polymer ends being terminated withhydroxyl groups, one at each end of the polymer molecule. These polymers have anaverage of from about 1.6 to 5 hydroxyl groups per polymer molecule. Thermosettingcoating compositions containing these polymers are also disclosed. The monomers whichare polymerized may include a small proportion of hydroxy- functional monomers, butdesirably consist of monoethylenically unsaturated monomers lacking hydroxylfunctionality. The polymers are produced by polymerizing the monoethylenicallyunsaturated monomers in organic solvent solution medium containing a free radicalinitiator and a proportion of a chain- terminating agent which is a bis hydroxyorganicxanthogen disulfide in which the organic group is preferably an alkylene group containsfrom 2- 18 carbon atoms to provide the desired molecular weight. The polymers arepreferably liquid to slowly flowable at room temperature in the absence of organicsolvent.

申请人：DESOTO, INC.

代理机构：Dressler, Goldsmith, Shore, Sutker & Milnamow, Ltd.

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