Non woven fabrics suitable for diaper and diaper coverstock
AssigneeRohm and Haas Company
InventorsJean-Marc Beiner, Jerome F. Levy, Bernard J. M. Sweens
Life of this patent
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Abstract
Non-woven fibrous products, such as diapers, in which the fibres are bound together by an emulsion copolymer of C.sub.4 C.sub.8 ester of acrylic and/or methacrylic acid: at least one of methyl methacrylate, styrene or .alpha.-methyl styrene and acid comprising mono-unsaturated dicarboxylic acid optionally in combination with mono-unsaturated monocarboxylic acid. The fibres comprise at least 50% hydrophilic fibres such as cellulosic fibres.
Claims9
A non-woven fibrous product whose fibres comprise at least 50%, by weight of dry fibre weight, of hydrophilic fibres, as hereinbefore defined, in which the fibres are bonded together by an emulsion copolymer of a monomer composition comprising:
- (a) 50-80% of the total monomers of at least one C.sub.4 -C.sub.8 ester of acrylic and/or methacrylic acid;
- (b) 10-49% by weight of the total monomers of at least one of methyl methacrylate, styrene and .alpha.-methyl styrene;
- and
- (c) 0.5-10% by weight of the total monomers of acid comprising at least one monoethylenically unsaturated dicarboxylic acid, optionally in combination with at least one monoethylenically unsaturated monocarboxylic acid;
- the copolymer being free from units containing methylol groups and free from added aminoplasts.
Dependencies are inferred from the claim text.