COMPOSITE MATERIAL
First Claim
1. A composite microfiber, comprising:
- a polysaccharide polymer selected from the group consisting of cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, ethyl cellulose, n-propyl cellulose, isopropyl cellulose, cellulose acetate and combinations of two or more of these substances, and combinations of two or more of these substances,the polysaccharide polymer further comprising substituents of formula (I)
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Accused Products
Abstract
The invention describes a composite microfiber, which is comprising a polysaccharide polymer selected from the group consisting of cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, ethyl cellulose, n-propyl cellulose, isopropyl cellulose, cellulose acetate and combinations of two or more of these substances, and combinations of two or more of these substances, thereby the polysaccharide polymer further comprising substituents comprising a given formula, wherein k is 1 or greater, and wherein each moiety R1 is independently selected from H and methyl, and wherein each moiety R2 is independently selected from —H, —OH, —NH2, —SH, —OR3, —NHR3 and —NR3R4, —SR3, and wherein each moiety R3 and R4 are chemical groups independently selected from C1-C4 alkyl, C1-C4 alkoxy, C1-C4 alkoxy halide and C1-C4 heteroalkyl substituents, and is preferably selected from —CH3, —CH2—CH3, —CH2—OH, —CH2—CH2—OH, —CH2—CH2—NH2, —CH—CH(OH)—CH2—OH, —CH—CH(OH)—CH3, glycidyl, anhydride, sulfonic acid and hydroxysuccinimide, said substituents forming a hydrogel in the presence of water, and said composite microfiber having a swelling factor of at least 10%, preferably of 10-400%.
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Citations
19 Claims
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1. A composite microfiber, comprising:
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a polysaccharide polymer selected from the group consisting of cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, ethyl cellulose, n-propyl cellulose, isopropyl cellulose, cellulose acetate and combinations of two or more of these substances, and combinations of two or more of these substances, the polysaccharide polymer further comprising substituents of formula (I) - View Dependent Claims (13)
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2. A method of producing a composite microfiber, comprising the steps of:
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(i) providing a hydrophilic polysaccharide polymer fiber, the polysaccharide being selected from the group consisting of cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, ethyl cellulose, n-propyl cellulose, isopropyl cellulose, cellulose acetate and combinations of two or more of these substances, and combinations of two or more of these substances, (ii) gamma radiation induced polymerization of two or more monomers for simultaneous producing and grafting of substituents of formula (I), - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19)
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Specification