Nonwoven articles
First Claim
1. An absorbent nonwoven article comprising:
- (a) a nonwoven web comprised of organic fibers, said organic fibers comprised of polymers having a plurality of pendant hydroxyl groups; and
(b) a binder comprising a crosslinked and at least partially hydrolyzed polymeric resin having a plurality of pendant resin hydroxyl groups, and a crosslinking agent, the resin crosslinked by the crosslinking agent, the crosslinking agent selected from the group consisting of organic titanates and amorphous metal oxides, the polymeric resin derived from the copolymerization of first and second nonomers, said first monomer selected from the group consisting of monomers within the general formula ##STR5## wherein;
X is Si(OR4 OR5 OR6);
said second monomer selected from the group consisting of monomers within the general formula ##STR6## wherein;
Y is O(CO)R7 ; and
R1, R2, R3, R4, R5, R6 and R7 are independently selected from the group consisting of hydrogen and organic radicals having from 1 to about 10 carbon atoms.
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Abstract
Nonwoven particles having high durability and absorbent characteristics, and their methods of manufacture, are presented. One preferred article is characterized by
(a) a nonwoven web comprised of organic fibers comprised of polymers having a plurality of pendant hydroxyl groups; and
(b) a binder comprising an at least partially crosslinked and at least partially hydrolyzed polymeric resin having a plurality of pendant resin hydroxyl groups, the resin crosslinked by a crosslinking agent, the crosslinking agent selected from the group consisting of organic titanates and amorphous metal oxides, the polymeric resin derived from monomers selected from the group consisting of monomers within the general formula ##STR1## wherein: X is selected from the group consisting of Si(OR4 OR5 OR6) and O(CO)R7 ; and
R1 -R7 inclusive are independently selected from the group consisting of hydrogen and organic radicals having from 1 to about 10 carbon atoms, inclusive, and combinations thereof.
50 Citations
32 Claims
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1. An absorbent nonwoven article comprising:
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(a) a nonwoven web comprised of organic fibers, said organic fibers comprised of polymers having a plurality of pendant hydroxyl groups; and (b) a binder comprising a crosslinked and at least partially hydrolyzed polymeric resin having a plurality of pendant resin hydroxyl groups, and a crosslinking agent, the resin crosslinked by the crosslinking agent, the crosslinking agent selected from the group consisting of organic titanates and amorphous metal oxides, the polymeric resin derived from the copolymerization of first and second nonomers, said first monomer selected from the group consisting of monomers within the general formula ##STR5## wherein;
X is Si(OR4 OR5 OR6);said second monomer selected from the group consisting of monomers within the general formula ##STR6## wherein;
Y is O(CO)R7 ; andR1, R2, R3, R4, R5, R6 and R7 are independently selected from the group consisting of hydrogen and organic radicals having from 1 to about 10 carbon atoms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An absorbent nonwoven article comprising:
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(a) a nonwoven web comprised of organic fibers, said organic fibers comprised of polymers having a plurality of pendant hydroxyl groups; and (b) a binder comprising a crosslinked and at least partially hydrolyzed polymeric resin having a plurality of pendant resin hydroxyl groups, and a crosslinking agent, the resin crosslinked by the crosslinking agent, the crosslinking agent selected from the group consisting of organic titanates, amorphous metal oxides, and dialdehydes, the polymeric resin derived from the copolymerization of first and second monomers, said first monomer selected from the group consisting of monomers within the general formula ##STR7## wherein X is Si(OR4 OR5 OR6); said second monomer is selected from the group consisting of monomers within the general formula ##STR8## wherein;
Y is O(CO)R7 ; andR1, R2, R3, R4, R5, R6 and R7 are independently selected from the group consisting of hydrogen and organic radicals having from 1 to about 10 carbon atoms. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An absorbent nonwoven article comprising:
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(a) a nonwoven web comprised of organic fibers and a binder, said organic fibers consisting of rayon; and (b) said binder comprising a crosslinked and at least partially hydrolyzed polymeric resin having a plurality of pendant resin hydroxyl groups, sad a crosslinking agent, the resin crosslinked by the crosslinking agent, the crosslinking agent selected from the group consisting of organic titanates and amorphous metal oxides, the polymeric resin derived from the copolymerization of first and second monomers, said first monomer selected from the group consisting of monomers within the general formula ##STR9## wherein X is Si(OR4 OR5 OR6); said second monomer is selected from the group consisting of monomers within the general formula ##STR10## wherein;
Y is O(CO)R7 ; andR1, R2, R3, R4, R5, R6 and R7 are independently selected from the group consisting of hydrogen and organic radicals having from 1 to about 10 carbon atoms.
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22. An absorbent nonwoven article comprising:
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(a) a nonwoven web comprised of organic fibers, said organic fibers comprising polymers having a plurality of pendant fiber hydroxyl groups; and (b) a crosslinked resin binder coated over said web, said binder comprising the reaction product of (i) a polyvinyl alcohol having a polymer backbone with pendant resin hydroxyl groups and pendant silanol groups, (ii) a first crosslinking agent comprising a chelating organic titanate, and (iii) a second crosslinking agent comprising an amorphous metal oxide, said organic titanate crosslinking said polymer backbone through said pendant resin hydroxyl groups and said amorphous metal oxide crosslinking said polymer backbone through said pendant silanol groups to form a crosslinked modified polyvinyl alcohol coating. - View Dependent Claims (23, 24, 25, 26, 27)
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28. An absorbent nonwoven article comprising:
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(a) a nonwoven web comprised of organic fibers, said organic fibers comprising polymers having a plurality of pendant fiber hydroxyl groups; and (b) a crosslinked resin binder coated over said web, said binder comprising the reaction product of (i) a polyvinyl alcohol having a polymer backbone with pendant resin hydroxyl groups and pendant silanol groups, (ii) a first crosslinking agent comprising a chelating organic titanate, and (iii) a second crosslinking agent comprising an amorphous aluminum hydrous oxide. - View Dependent Claims (29, 30, 31, 32)
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Specification