[특허]Water absorbent fibrous product and a method of producing the same

Water absorbent fibrous product and a method of producing the same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61F-013/18 A61L-015/00 A61L-015/01 D06M-015/263
출원번호	US-0829668 (1986-02-13)
우선권정보	JP-0027570 (1985-02-16); JP-0136654 (1985-06-22); JP-0273896 (1985-12-04)
발명자 / 주소	Saotome Kazuo (Tokyo JPX)
출원인 / 주소	Hayashikane Shipbuilding & Engineering Co., Ltd. (JPX 03)
인용정보	피인용 횟수 : 50 인용 특허 : 0

초록 ▼

A water absorbent fibrous product comprising a fibrous cellulosic material impregnated with a water absorbent acrylic polymer and a fibrous material, which is produced by a method in which an aqueous solution of a monomeric component comprising acrylic acid and a radical initiator is diffused in a fibrous cellulosic material and heated, followed by blending with a fibrous material. The fibrous product exhibits a high water absorbency, and finds applications as high-quality disposable diapers, sanitary napkins, surgical pads, surgical sheets, paper towels or the like.

대표청구항 ▼

A water absorbent fibrous product produced by a method comprising the steps of: (1) providing an aqueous solution comprised of water, a monomeric component comprising a water-soluble cross-linkable polyfunctional monomer, acrylic acid, 60 to 90% of the carboxyl groups of said acrylic acid being in the form of an alkali metal salt, and a radical initiator; (2) diffusing the aqueous solution in a fibrous cellulosic material in such proportions that the amount ratio of said monomeric component to said cellulosic material is in the range of from 5/95 to 50/50 to obtain an aqueous mixture; (3) heating the aqueous mixture at a temperature of 60°C. or more to effect radical polymerization of said monomeric component to form a crosslinked acrylic polymer, thereby obtaining a polymerization product containing the fibrous cellulosic material impregnated with said polymer, followed by bringing to pieces; and (4) blending the polymerization product with a fibrous material. A method according to claim 16, wherein said radical initiator is a water soluble persulfate compound.

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