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2. Nippon Kokai Tokkyo Koho 46-29525 (1971) (Japanese Patent).
3. U.S. Patent Number 3,907,865 (1975).
4. D. D. Perry, W. Rowe andD. S. Davis,ACS Organic Coatings Prepr. 35 (1975) 222.
5. D. S. Huh andS. L. Cooper,Polymer Eng. Sci. 11 (1971) 369.