
{"publication_number": "US-2005257904-A1", "abstract": "a cellulose fiber having extended biostability and the method of its manufacture are described . while prior treatments of cellulose with biotoxic metal compounds have given improved resistance to decay , these treatments have not been entirely satisfactory where the fiber had to be refined before use . refining energy was very high and fiber length loss was substantial . treatment of cellulose fiber with dideyldimethylammonium chloride or bromide , these materials in combination with low levels of copper , or low levels of copper alone , has given a product with very good biostability without a major increase in refining energy or loss of fiber length . the treated fiber is particularly advantageous as a reinforcing component for cement board products .", "application_number": "US-19274005-A", "description": "samples for testing were prepared by obtaining unbleached mixed conifer kraft pulp sheets produced in an interior british columbia mill . the sheets were essentially unrefined and had a basis weight of about 900 g / m 2 . solutions of various biocides were made up so that the desired ultimate concentration of active material would be obtained by spraying each sample portion of pulp sheet with about 1 g of the biocidal solution per gram of pulp . the treated sheets were then air dried to fix the active ingredient . subsequently the treated sheets were reslurried in water having a ph { tilde over ()