The Carlyle Group Inc. (NasdaqGS:CG) and TA Associates Management, L.P. are exploring a sale of PurposeBuilt Brands, Inc., an owner of specialty cleaning and disinfection products, according to people with knowledge of the matter. The private equity firms, which control PurposeBuilt, are working with an adviser to solicit interest from suitors, said the people, who requested anonymity discussing information that isn?t public. It could fetch at least $1.5 billion, including debt, in a sale, one of the people said. The company filed paperwork for an initial public offering with U.S. Securities and Exchange Commission in January. Its plans have since pivoted, a person with knowledge of the matter said.