Synthetic pulp and absorbent comprising the same
AssigneeMitsui Petrochemical Industries, Ltd.
InventorKoji Horimoto
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Abstract
A synthetic pulp comprising a pulp fiber of a thermoplastic resin and, adhering to the surface thereof, a polypropylene glycol having a molecular weight of 200 to 10,000, preferably together with a phenolic antioxidant and/or a phosphorous acid ester type antioxidant, has an excellent hydrophilic property even in the dry state and a good wettability or rewettability. This pulp forms a good slurry without bubbling when thrown in water. When a mixture of this synthetic pulp and other hydrophilic short fiber is subjected to a heat-fusion treatment, a fibrous molded articles having an excellent hydrophilic property, a good wettability or rewettability and a high wet strength is obtained, and this fibrous molded article is especially valuable as an absorbent.
Claims17
A synthetic pulp having an improved hydrophilic property, which comprises pulp fibers of a thermoplastic resin and from 0.01 to 10% by weight, based on the pulp fibers, of a polypropylene glycol having a molecular weight of 200 to 10,000, which adheres to the surface of the fibers.
A synthetic pulp having an improved hydrophilic property, which comprises pulp fibers of a thermoplastic resin, and adhering to the surface of the fibers, a composition comprising (i) from 0.01 to 10% by weight, based on the fibers, of a polypropylene glycol having a molecular weight of 200 to 10,000 and (ii) from 0.001 to 10% by weight, based on the weight of the fibers of at least one stabilizer selected from the group consisting of phenolic antioxidants and phosphorus acid ester type antioxidants.
A fibrous molded article composed of a paper-made mixture comprising 5 to 50% by weight of pulp fibers of a thermoplastic resin and 50 to 95% by weight of other hydrophilic short fibers, said other hydrophilic short fibers being at least partially bonded to one another through the fusion-treated thermoplastic resin pulp fibers, wherein the thermoplastic resin pulp fibers have on the surface thereof a composition comprising (I) from 0.01 to 10% by weight of the fibers of a polypropylene glycol having a molecular weight of 200 to 10,000 and (II) from 0.001 to 10% by weight of the fiber of at least one stabilizer selected from the group consisting of phenolic antioxidants and phosphorus acid ester type antioxidants.
Dependencies are inferred from the claim text.