Canada's Catalyst Paper Corp (CTL.TO: Quote) filed for Chapter 15 protection in a U.S. court on Tuesday as the specialty paper and newsprint producer grappled with rising costs of raw materials and lower demand.

Catalyst is the latest in line of paper producers that have succumbed to higher costs, increased competition from Asia and Europe, and falling demand as more advertisers and readers move online.

Under U.S. bankruptcy laws, Chapter 15 grants a foreign company protection from creditors looking to seize its assets in the country.

Last week, Catalyst had said it had entered into a restructuring agreement, which will see its bondholders taking control of the company and includes an exchange of debt for equity.

The agreement said it would slash the company's debt by C$315.4 million ($311 million) and reduce its cash interest expenses.

The company listed both assets and liabilities of more than $1 billion in the court filing.

After the restructuring announcement, Moody's Investors Service downgraded the company's rating to Ca from Caa3.

The Richmond, British Columbia-based company, which has posted losses for nearly two years, had deferred interest payments of $21 million in December and said it is reviewing alternatives to address its capital structure.

Last year, Cerberus Capital-backed NewPage Corp filed for bankruptcy protection, followed by SP Newsprint Co, owned by newsprint magnate and fine art collector Peter Brant.

In December, Wausau Paper (WPP.N: Quote) said it will close its Brokaw mill in Wisconsin, cut 450 jobs and exit its print and color business.

Catalyst, which calls itself the largest producer of mechanical printing paper in western North America, has three manufacturing facilities in British Columbia and one in Arizona, United States.

Shares of the company, which have lost more than 85 percent of their value over the past year, closed at 2 Canadian cents on Tuesday on the Toronto Stock Exchange.

The case is In re: Catalyst Paper Holdings Inc, U.S. Bankruptcy Court District of Delaware, No. 12-10219.

($1 = 1.0142 Canadian dollars)