Absorptive Polymer, Compound Fiber and Cigarette Filter Rod Made of Compound Fiber
AssigneeBright Chemical Science & Technology Development Center, Beijing
InventorsJIANMIN CUI, SHUJUN TAN
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Abstract
An absorptive polymer, which is an aqueous emulsion made from copolymerization of neutral unsaturated monomers, unsaturated lipophilic monomers and unsaturated hydrophilic monomers, in the proportion of 50:26-37:14-25 in weight. A compound fiber comprising cigarette filter rod fiber as core and surface layer absorptive polymer; the cigarette filter rod fiber is polypropylene fiber or cellulose acetate fiber; lipophilic groups of the absorptive polymer are attached to polypropylene fiber of cigarette filter rod.
Claims5
An absorptive polymer, which is aqueous emulsion made from copolymerization of neutral unsaturated monomers, unsaturated lipophilic monomers and unsaturated hydrophilic monomers, in the proportion of 50:26-37:14-25 in weight;
- the polymer is of the following structural formula:
- In the formula:
- The main chain is long chain of polymerization of ethene groups, with neutral acetate groups of neutral unsaturated monomers as the main part;
- the unsaturated neutral monomers are vinyl acetate and/or ethyl methacrylate;
- RN is neutral acetate group from vinyl acetate and/or ethyl methacrylate;
- R0 is lipophilic group from at least one of the lipophilic monomers:
- styrene, 2-ethylhexyl methacrylate, dodecyl methacrylate, and isobornyl methacrylate;
- RA is hydrophilic group from at least one of the unsaturated hydrophilic monomer of methacrylic acid, methacrylate, acrylic acid, acrylate, and maleic acid, maleate.
Dependencies are inferred from the claim text.