Absorbent articles comprising organopolysiloxane conditioning polymers
AssigneeThe Procter & Gamble Company
InventorsCarola Barrera, Steven Daryl Smith, Robert Joseph McChain, Yonas Gizaw, Rajan Keshav Panandiker, Charles William Neal, John Lee Hammons
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Abstract
Nonwoven fabrics comprising an organopolysiloxane polymer coating that can impart softness to said nonwoven fabric surface. Also disclosed are disposable absorbent articles comprising said nonwoven fabrics.
Claims10
A disposable absorbent article comprising a topsheet, a backsheet, and an absorbent core disposed between said topsheet and said backsheet, wherein said topsheet comprises a nonwoven fabric coated with a blocky cationic organopolysiloxane having the formula:
- MwDxTyQz
- wherein:
- M=[SiR1R2R3 O1/2], [SiR1R2G1O1/2], [SiR1G1G2O1/2 ], [SiG1G2G3O1/2 ], or combinations thereof;
- D=[SiR1R2O2/2], [SiR1G1O2/2], [SiG1G2O2/2] or combinations thereof;
- T=[SiR1O3/2], [SiG1O3/2] or combinations thereof;
- Q=[SiO4/2];
- w=is an integer from 1 to (2+y+2z);
- x=is an integer from 5 to 15,000;
- y=is an integer from 0 to 98;
- z=is an integer from 0 to 98;
- R1, R2 and R3 are each independently selected from the group consisting of H, OH, C1-C32 alkyl, C1-C32 substituted alkyl, C5-C32 aryl, C5-C32 substituted aryl, C6-C32 alkylaryl, C6-C32 substituted alkylaryl, C1-C32 alkoxy, C1-C32 substituted alkoxy, C1-C32 alkylamino, and C1-C32 substituted alkylamino;
- at least one of M, D, or T incorporates at least one moiety G1, G2 or G3;
- and
- G1, G2, and G3 are identical or different moieties, each of which has the formula:
- wherein:
- X comprises a divalent radical selected from the group consisting of C1-C32 alkylene, C1-C32 substituted alkylene, C5-C32 arylene, C5-C32 substituted arylene, C6-C32 arylalkylene, C6-C32 substituted arylalkylene, C1-C32 alkoxy, C1-C32 substituted alkoxy, C1-C32 alkyleneamino, C1-C32 substituted alkyleneamino, ring-opened epoxide, and ring-opened glycidyl, with the proviso that if X does not comprise a repeating alkylene oxide moiety then X can further comprise a heteroatom selected from the group consisting of P, N and O;
- each R4 comprises identical or different monovalent radicals independently selected from the group consisting of H, C1-C32 alkyl, C1-C32 substituted alkyl, C5-C32 aryl, C5-C32 substituted aryl, C6-C32 alkylaryl, and C6-C32 substituted alkylaryl;
- E comprises a divalent radical selected from the group consisting of C1-C32 alkylene, C1-C32 substituted alkylene, C5-C32 arylene, C5-C32 substituted arylene, C6-C32 arylalkylene, C6-C32 substituted arylalkylene, C1-C32 alkoxy, C1-C32 substituted alkoxy, C1-C32 alkyleneamino, C1-C32 substituted alkyleneamino, ring-opened epoxide and ring-opened glycidyl, with the proviso that if E does not comprise a repeating alkylene oxide moiety then E can further comprise a heteroatom selected from the group consisting of P, N, and O;
- E′ comprises a divalent radical selected from the group consisting of C1-C32 alkylene, C1-C32 substituted alkylene, C5-C32 arylene, C5-C32 substituted arylene, C6-C32 arylalkylene, C6-C32 substituted arylalkylene, C1-C32 alkoxy, C1-C32 substituted alkoxy, C1-C32 alkyleneamino, C1-C32 substituted alkyleneamino, ring-opened epoxide and ring-opened glycidyl, with the proviso that if E′ does not comprise a repeating alkylene oxide moiety then E′ can further comprise a heteroatom selected from the group consisting of P, N, and O;
- p is an integer independently selected from 1 to 50;
- n is an integer independently selected from 1 or 2;
- when at least one of G1, G2, or G3 is positively charged, A−t is a suitable charge balancing anion or anions such that the total charge, k, of the charge-balancing anion or anions is equal to and opposite from the net charge on the moiety G1, G2 or G3;
- where t is an integer independently selected from 1, 2, or 3;
- and wherein k ≤p*2/t+1, for each moiety G.
A disposable absorbent article comprising a topsheet, a backsheet, and an absorbent core disposed between said topsheet and said backsheet, wherein said topsheet comprises a nonwoven fabric coated with a blocky organopolysiloxane having the formula:
- MWDX
- where:
- M=[SiR1R2R3O1/2], [SiR1R2G1O1/2], [SiR1G1G2O1/2], [SiG1G2G3O1/2], or combinations thereof;
- D=[SiR1R2O2/2];
- w=is an integer from 1 to 2;
- x=is an integer from 5 to 15,000;
- R1, R2 and R3 are each independently selected from the group consisting of H, OH, C1-C32 alkyl, C1-C32 substituted alkyl, C5-C32 aryl, C5-C32 substituted aryl, C6-C32 alkylaryl, C6-C32 substituted alkylaryl, C1-C32 alkoxy, C1-C32 substituted alkoxy, C1-C32 alkylamino, and C1-C32 substituted alkylamino;
- at least one of M or D incorporates at least one moiety G1, G2 or G3, and G1, G2, and G3 are identical or different moieties each of which has the formula:
- wherein:
- X comprises a divalent radical selected from the group consisting of C1-C32 alkylene, C1-C32 substituted alkylene, C5-C32 arylene, C5-C32 substituted arylene, C6-C32 arylalkylene, C6-C32 substituted arylalkylene, C1-C32 alkoxy, C1-C32 substituted alkoxy, C1-C32 alkyleneamino, C1-C32 substituted alkyleneamino, ring-opened epoxide and ring-opened glycidyl, with the proviso that if X does not comprise a repeating alkylene oxide moiety then X can further comprise a heteroatom selected from the group consisting of P, N, and O;
- R4 comprises identical or different monovalent radicals selected from the group consisting of H, C1-C32 alkyl, C1-C32 substituted alkyl, C5-C32 aryl, C5-C32 substituted aryl, C6-C32 alkylaryl, and C6-C32 substituted alkylaryl;
- E comprises a divalent radical selected from the group consisting of C1-C32 alkylene, C1-C32 substituted alkylene, C5-C32 arylene, C5-C32 substituted arylene, C6-C32 arylalkylene, C6-C32 substituted arylalkylene, C1-C32 alkoxy, C1-C32 substituted alkoxy, C1-C32 alkyleneamino, C1-C32 substituted alkyleneamino, ring-opened epoxide, and ring-opened glycidyl, with the proviso that if E does not comprise a repeating alkylene oxide moiety then E can further comprise a heteroatom selected from the group consisting of P, N, and O;
- E′ comprises a divalent radical selected from the group consisting of C1-C32 alkylene, C1-C32 substituted alkylene, C5-C32 arylene, C5-C32 substituted arylene, C6-C32 arylalkylene, C6-C32 substituted arylalkylene, C1-C32 alkoxy, C1-C32 substituted alkoxy, C1-C32 alkyleneamino, C1-C32 substituted alkyleneamino, ring-opened epoxide, and ring-opened glycidyl, with the proviso that if E′ does not comprise a repeating alkylene oxide moiety then E′ can further comprise a heteroatom selected from the group consisting of P, N, and O;
- p is an integer independently selected from 1 to 50;
- n is an integer independently selected from 1 or 2;
- and
- when at least one of G1, G2, or G3 is positively charged, A−t is a suitable charge balancing anion or anions such that the total charge, k, of the charge-balancing anion or anions is equal to and opposite from the net charge on the moiety G1, G2 or G3;
- wherein t is an integer independently selected from 1, 2, or 3;
- and wherein k ≤p*2/t+1 for each moiety G.
Dependencies are inferred from the claim text.