Polymer film composition for rinse release of wash additives
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C11D-017/06
C11D-017/04
D06M-013/46
D06M-013/54
출원번호
US-0030192
(1987-03-24)
발명자
/ 주소
Ogar
Jr. George W. (Dublin CA) Choy Clement K. (Walnut Creek CA)
출원인 / 주소
The Clorox Company (Oakland CA 02)
인용정보
피인용 횟수 :
51인용 특허 :
0
초록▼
A polymeric film for the rinse release of wash additives comprises an outer film layer of a hydroxybutylmethylcellulose (HBMC)/hydroxypropylmethylcellulose (HPMC) blend. An inner film layer is a PVA film having a metalloid oxide cross-linking agent present in an amount sufficient to cause the PVA fi
A polymeric film for the rinse release of wash additives comprises an outer film layer of a hydroxybutylmethylcellulose (HBMC)/hydroxypropylmethylcellulose (HPMC) blend. An inner film layer is a PVA film having a metalloid oxide cross-linking agent present in an amount sufficient to cause the PVA film to gel in a pH of below about 9.0. Both film layers include a plasticizer and may include a surfactant. The film can be used as a seal for an insoluble container, or made into a water-soluble pouch. Optionally, either a third film layer of the HBMC/HPMC blend, or a nonwoven fabric layer may be included for greater durability. The films remain intact during normal wash cycles and over a range of typical water temperatures, then rapidly dissolve in the rinse.
대표청구항▼
A water-soluble, free-standing polymeric film comprising (a) a first film layer having a thickness of between about 0.5 to 2 mils, and comprising a mixture of hydroxybutylmethylcellulose (HBMC) with a weight average molecular weight of at least about 26,000 g/mole, hydroxypropylmethylcellulose (HPMC
A water-soluble, free-standing polymeric film comprising (a) a first film layer having a thickness of between about 0.5 to 2 mils, and comprising a mixture of hydroxybutylmethylcellulose (HBMC) with a weight average molecular weight of at least about 26,000 g/mole, hydroxypropylmethylcellulose (HPMC) with a weight average molecular weight of at least about 10,000 g/mole, and a first plasticizer, wherein a ratio of HPMC to HBMC is between about 9:1 to 1:1; and (b) a second film layer having a thickness of between about 0.1 to 10 mils, and comprising a mixture of a polyvinyl alcohol having a weight average molecular weight of at least about 10,000 g/mole, a degree of hydrolysis of between about 75% and 95%, a second plasticizer, and a quantity of a cross-linking agent sufficient to reduce the solubility of the film in an alkaline pH, the second film layer and the first film layer being disposed together in an abutting relationship. A wash additive composition for the rinse release of a wash additive comprising (a) a wash additive particle, having an average diameter of between about 10 to 400 microns; (b) a first polymeric layer, about 0.5 to 10 mils in thickness, comprising a mixture of a PVA resin having a weight average molecular weight of at least about 10,000 g/mole and a degree of hydrolysis of about 75% to 98%, with a plasticizer, and about 0.05 to 9% of a cross-linking agent, the first polymeric layer being coated onto the additive particle; and (c) a seoond polymeric layer about 0.5 to 10 mils in thickness, coated onto the first layer and comprising a mixture of a hydroxybutylmethylcellulose (HBMC) resin, having a weight average molecular weight of at least about 90,000 g/mole, a hydroxypropylmethylcellulose (HPMC) resin, having a weight average molecular weight of between about 10,000 and 30,000 g/mole, the hydroxypropylmethylcellulose (HPMC) and hydroxybutylmethylcellulose (HBMC) being present in a ratio of between about 9:1 to 1:1, and a plasticizer.
Cascao-Pereira, Luis G.; Estell, David A.; Goedegebuur, Frits; Kellis, Jr., James T.; Poulise, Ayrookaran J., Compositions and methods comprising a subtilisin variant.
DiPietro, Richard A.; Fleischman, Thomas J.; Hutzler, Richard; Maddern, Keith B.; Morse, William K., Polymer composition with saliva labile aversive agent.
Smith William L. (Pleasanton CA) Kaufmann Edward J. (San Ramon CA) Sudbury Barry A. (Pleasanton CA), Rinse soluble polymer film composition for wash additives.
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