| 摘要 |
1316833 Absorbent articles UNION CARBIDE CORP 22 June 1970 [23 June 1969] 30105/70 Heading A5R An absorbent article suitable for diapers or sanitary towels comprises a pad, the absorbency of which is increased by the incorporation of an insoluble hydrophilic polymer. The polymer, in the form of a hydrogel, can be employed simply as a powder dispersed throughout a cellulosic pad or possibly as a film sandwiched between layers of the pad. The hydrophilic polymer is of the formula: which has been cross linked and wherein R 1 and R 2 are selected from hydrogen, alkyl radicals, alkyl radicals substituted by any radicals and where R 3 -R 6 are selected from hydrogen, phenyl and vinyl radicals and n is greater than 1. The preferred method of producing such a cross linked gel comprises preparing a homogeneous water solution of the polymer and submitting the solution to ionising radiation. Various diapers sanitary towels and tampons are described comprising alternate laminae of cotton and insoluble polymers and in one embodiment slit or perforated tapes of polymer are incorporated into the pad.
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