Dow Buys Celotex Insulation Business.

Dow Chemical Co., Midland, Mich., last month made a major addition to its building-materials business with the purchase of Celotex Corp.'s rigid polyisocyanurate (PIR) foam insulation products for residential and commercial markets.

Celotex Corp. will retain use of the Celotex name, but Dow has acquired former Celotex product brands including Tuff-R, Super Tuff-R, Sturdy-R, Thermax, Hy-Therm, Celo-Vent, and Tuff-Wrap. The purchase also includes five plants in Charleston, Ill.; Elizabethtown, Ky.; Pennsauken, N.J.; Texarkana, Ark.; and Tracy, Calif. Dow's building products include Styrofoam extruded polystyrene foam insulation and Trymer PIR foam pipe insulation.