Eastman Chemical Co. will acquire specialty chemical maker Taminco Corp., whose plants include a St. Gabriel manufacturing facility, in a deal valued at $2.8 billion.

The St. Gabriel plant makes dimethylaminopropylamine or DMAPA, “a chemical cornerstone” used in making fabric softeners, detergents, disinfectants, shampoo and liquid soap.

Taminco officials did not respond to requests for information on whether the change in ownership will affect workers at the St. Gabriel plant.

Eastman Chemical Co. is buying Taminco for $1.73 billion and assuming its $1 billion debt.

Eastman Chemical said in a statement that the acquisition will strengthen Eastman Chemical’s presence in markets such as food, feed and agriculture. It also provides opportunities to speed up growth in the personal care, coatings and oil and gas.

Eastman will pay $26 per share, a 9 percent premium to Taminco Corp.’s Wednesday closing price of $23.88.

The deal includes a 30-day period in which Taminco can seek offers from other potential buyers.

Taminco CEO Laurent Lenoir said in a statement that the acquisition will give the company more resources to put toward its long-term strategy of expanding in key markets and will help to expand into new product lines.

Taminco also said it is canceling its investor day, which was scheduled for Monday.

Eastman Chemical said it will pay for the acquisition with available cash and debt financing. The company expects the addition will increase its 2015 earnings by more than 35 cents per share, excluding acquisition-related costs and charges. It is expected to add more than 60 cents per share to 2016 earnings.

Both companies’ boards have approved the deal, which is expected to close in the fourth quarter. It still needs approval from a majority of Taminco’s shareholders.

Advocate business writer Ted Griggs contributed to this report.