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US 7,741,266 B2Granted
Process for preparing scented cellulosics and products prepared thereby
AssigneeRotuba Extruders, Inc.
InventorsAdam Bell, Mohamed Mohamed, Robert Zwick, James Bumenfeld
Life of this patent
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Abstract
The present invention provides a process for optimizing the fragrance of a scented cellulosic.
Claims9
A process for preparing a scented cellulosic with optimal fragrance intensity, comprising the steps of:
- (a) determining an amount of net plasticizer to be added to a pre-melt cellulosic composition;
- (b) selecting a high preliminary fragrance:plasticizer weight ratio of the net plasticizer, wherein the high preliminary fragrance:plasticizer weight ratio is 2 or higher;
- (c) adding the net plasticizer with the high preliminary fragrance:plasticizer ratio;
- (d) determining the fragrance:plasticizer weight ratio of net plasticizer that achieves maximum fragrance intensity in the processed scented cellulosic by decreasing the fragrance:plasticizer ratio of the net plasticizer in iterative trials, while the amount of the net plasticizer remains constant over the iterative trials;
- (e) selecting a final fragrance:plasticizer ratio based on the desired fragrance intensity of the scented cellulosic, wherein the final fragrance:plasticizer ratio is less than or equal to the fragrance:plasticizer ratio in step (d) that achieves the maximum fragrance intensity;
- and (f) preparing the pre-melt cellulosic composition having the final fragrance:plasticizer ratio.
3 more elements
A process for preparing a scented cellulosic with optimal fragrance intensity, comprising the steps of:
- (a) determining an amount of net plasticizer to be added to a pre-melt cellulosic composition;
- (b) selecting a high preliminary fragrance:plasticizer weight ratio of the net plasticizer, wherein the high preliminary fragrance:plasticizer weight ratio is 2 or higher;
- (c) adding the net plasticizer with the high preliminary fragrance:plasticizer ratio;
- (d) determining the fragrance:plasticizer weight ratio of net plasticizer that achieves maximum fragrance intensity in the processed scented cellulosic by decreasing the fragrance:plasticizer ratio of the net plasticizer in iterative trials, while the amount of the net plasticizer remains constant over the iterative trials, wherein the maximum fragrance intensity is an intensity value at which an increase in the fragrance:plasticizer weight ratio, while the net plasticizer amount is held constant, results in the pre-melt cellulosic composition having a fragrance that is less intense;
- (e) selecting a final fragrance:plasticizer ratio based on the desired fragrance intensity of the scented cellulosic, wherein the final fragrance:plasticizer ratio is less than or equal to the fragrance:plasticizer ratio in step (d) that achieves the maximum fragrance intensity;
- and (f) preparing the pre-melt cellulosic composition having the final fragrance:plasticizer ratio by an extrusion process to form scented solid pellets that are suitable for a later secondary melt processing step to create an end product having a form different than the scented solid pellet.
3 more elements
A process for preparing a scented cellulosic with optimal fragrance intensity, comprising the steps of:
- (a) determining and selecting an amount of net plasticizer to be added to a pre-melt cellulosic composition in order to subsequently produce an end product having desired properties;
- (b) determining the fragrance:plasticizer weight ratio of the net plasticizer that achieves maximum fragrance intensity for the selected amount of net plasticizer, wherein the amount of net plasticizer is constant and the maximum fragrance intensity is an intensity value at which an increase in the fragrance:plasticizer weight ratio, while maintaining the constant net plasticizer amount, results in the pre-melt cellulosic composition having a fragrance that is less intense;
- and (c) preparing the pre-melt cellulosic composition having the maximum fragrance:plasticizer ratio by an extrusion process to form scented solid pellets that are suitable for a later secondary melt processing step to form the end product having a form different than the scented solid pellet.
Dependencies are inferred from the claim text.