A purpose of this article is to regulate trade practices in the insurance business and related businesses in accordance in part with the intent of Congress as expressed in the Act of Congress approved March 9, 1945, being c. 20, 59 Stat. 33, also designated as 15 U.S.C. Secs. 1011 to 1015, inclusive, by defining, or providing for determination of, practices in this state which constitute unfair methods of competition or unfair or deceptive acts or practices so defined or determined.