초록 ▼

This invention relates to a filter and a method of making a filter. The filter is made of randomly orientated fibers made from an interpenetrating network formed from at least two polymers which are substantially water soluble in their salt form and which ionically interact in an aqueous solution to

This invention relates to a filter and a method of making a filter. The filter is made of randomly orientated fibers made from an interpenetrating network formed from at least two polymers which are substantially water soluble in their salt form and which ionically interact in an aqueous solution to form the interpenetrating network. The filter is made without organic solvents, particularly, volatile organic compound, and the filter is sufficiently water soluble to biodegrade upon disposal. A desired use of the filter is a cigarette filter.

대표청구항 ▼

[ We claim:] [1.] A filter comprising:fibers comprised of an interpenetrating polymer network, the interpenetrating polymer network made from at least a first polymer and a second polymer, wherein:the first polymer is an anionic polymer which is substantially water soluble in its salt form, andthe s

[ We claim:] [1.] A filter comprising:fibers comprised of an interpenetrating polymer network, the interpenetrating polymer network made from at least a first polymer and a second polymer, wherein:the first polymer is an anionic polymer which is substantially water soluble in its salt form, andthe second polymer is a cationic polymer which is substantially water soluble in its salt form;wherein the filter is sufficiently water soluble to biodegrade;wherein the interpenetrating polymer network is formed in a substantially aqueous solution which is substantially free of organic solvents by an ionic interaction between the first and second polymer; andwherein the fibers have a random orientation.