Kemira is announcing price increases on its paper chemical products. The increase will range from eight to 14 percent for most products, but could be higher for products more acutely impacted by escalating cost drivers.The increase will be effective for all deliveries on or after February 1.Costs have increased and supply has tightened for many key raw materials due to global recessionary factors. While Kemira continues to take actions to minimize the impact of escalating raw material costs, it is necessary to adjust pricing to continue to provide the high level of service, value, and new product development initiatives, Kemira writes in a press release.