US2010319576A1PendingUtilityA1

Process for preparing scented cellulosics

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Assignee: ROTUBA EXTRUDERS INCPriority: Jun 20, 2005Filed: Jun 18, 2010Published: Dec 23, 2010
Est. expiryJun 20, 2025(expired)· nominal 20-yr term from priority
Inventors:Adam BellMohamed MohamedRobert ZwickJames Blumenfeld
C08L 1/284A61Q 13/00C08L 1/02A61K 8/731
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PatentIndex Score
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Claims

Abstract

The present invention provides a process for optimizing the fragrance of a scented cellulosic.

Claims

exact text as granted — not AI-modified
1 - 20 . (canceled) 
     
     
         20 . A pre-melt composition for a scented cellulosic comprising:
 a pre-melt cellulosic selected from the group consisting of cellulose acetates and cellulose acetate esters;   a plasticizer;   a fragrance component; and   a solvent system that comprises a component that has both a non-polar and polar character, wherein the solvent is present in an amount between about 0.5% to about 20% by weight of the composition.   
     
     
         21 . The pre-melt composition for a scented cellulosic of  claim 20 , wherein the solvent system comprises a component that is soluble in both an alcohol and benzene. 
     
     
         22 . The pre-melt composition for a scented cellulosic of  claim 20 , wherein the solvent system includes a glycol or glycol ether. 
     
     
         23 . The pre-melt composition for a scented cellulosic of  claim 20 , wherein the solvent system has nonionic characteristics allowing the solvent system to be miscible in the plasticizer which is nonpolar in nature and the solvent system has available functional groups allowing for hydrogen-bonding between the plasticizer and the fragrance which is more polar in nature compared to the solvent. 
     
     
         24 . The pre-melt composition for a scented cellulosic of  claim 23 , wherein the functional groups comprise hydroxyl groups. 
     
     
         25 . The pre-melt composition for a scented cellulosic of  claim 20 , wherein the solvent system is present in an amount that is effective to facilitate migration of the fragrance through the cellulosic. 
     
     
         26 . A scented cellulosic composition comprising:
 a pre-melt cellulosic selected from the group consisting of cellulose acetates and cellulose acetate esters;   a plasticizer;   a fragrance component; and   a glycol or glycol ether;   wherein the cellulosic is at least about 40% by weight of the total weight of the composition.   
     
     
         27 . The composition of  claim 26 , wherein the glycol is a C 3 -C 12  substituted or unsubstituted alkylene glycol or a poly(C 3 -C 12  substituted or unsubstituted alkylene glycol). 
     
     
         28 . The composition of  claim 26 , wherein the glycol is a C 5 -C 10  substituted or unsubstituted alkylene glycol or a poly(C 5 -C 10  substituted or unsubstituted alkylene glycol). 
     
     
         29 . The composition of  claim 26 , wherein the glycol is a C 5 -C 7  substituted or unsubstituted alkylene glycol or a poly(C 5 -C 7  substituted or unsubstituted alkylene glycol). 
     
     
         30 . The composition of  claim 26 , wherein the glycol is hexylene glycol. 
     
     
         31 . The composition of  claim 26 , wherein the plasticizer is selected from dibutyl phalate, diethyl phthalate, dimethyl phthalate, triacetin, diethylhexyl-phthalate, and dioctyl phthalate. 
     
     
         32 . The composition of  claim 26 , wherein the glycol ether is an alkyl ether of alkylene glycol or poly(alkylene glycol). 
     
     
         33 . The composition of  claim 26 , wherein the glycol ether is a C 4 -C 7  mono or poly alkyl ether of an alkylene glycol or polyalkylene glycol. 
     
     
         34 . The composition of  claim 26 , wherein the glycol ether is a butyl ether of an alkylene glycol or a polyalkylene glycol. 
     
     
         35 . The composition of  claim 34 , wherein the alkylene glycol is diethylene glycol. 
     
     
         36 . The composition of  claim 26 , wherein the glycol ether is butyl carbitol. 
     
     
         37 . The composition of  claim 26 , wherein the glycol ether is selected from propylene glycol monoethyl ether, dipropylene glycol monoethyl ether, and tripropylene glycol monoethyl ether. 
     
     
         38 . The composition of  claim 37 , wherein the glycol ether is dipropylene glycol monoethyl ether. 
     
     
         39 . A pre-melt composition for a scented cellulosic comprising:
 a pre-melt cellulosic selected from the group consisting of cellulose acetates and cellulose acetate esters;   a plasticizer;   a fragrance component; and   a solvent system that comprises a component that has both a non-polar and polar character, wherein the solvent system has nonionic characteristics allowing the solvent system to be miscible in the plasticizer which is nonpolar in nature and the solvent system has available functional groups allowing for hydrogen-bonding between the plasticizer and the fragrance which is more polar in nature compared to the solvent, wherein the functional groups comprise hydroxyl groups, the solvent system being present in an amount that is effective to facilitate migration of the fragrance through the cellulosic.

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