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US4496467A Expired / Lapsed US ⏱️ 0.0 years remaining

Insect repellent, pheremonal, animal repellent diagnostic and/or aroma augmenting or enhancing compositions and articles containing at least a major proportion of poly(epsilon caprolactone)homopolymers, and having imbedded therein one or more functional

Assignee: International Flavors and Fragrances Inc
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Filing: 1983-12-21
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Granted: 1985-01-29
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Expires: 2003-12-21
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Abstract

Abstract Described is the use of homopolymers of (epsilon caprolactone) defined according to the structure: ##STR1## as controlled release materials for physiological or psychological diagnostic compositions, pheremones, insect repellent compositions, animal repellent compositions, and/or aroma augmenting or enhancing media for use in perfume compositions or perfumed articles or colognes; wherein n represents an integer of from about 500 up to about 1,200 with the proviso that the average "n" varies from about 600 up to about 800. Also described are mixtures of such homopolymers with other polymers such as polyethylene, polypropylene, mixtures of polyethylene and polyvinyl acetate, copolymers of ethylene and vinyl acetate, and the like, useful for controlled release of such physiological or psychological diagnostic compositions, pheremones, insect repellents, animal repellents and perfume materials into a gaseous environment surrounding the polymer matrix. Also described are methods for blending such polycaprolactone homopolymers whereby a first amount of a liquified polycaprolactone is admixed in an extruder, for example, with a diagnostic material and/or scent imparting material and/or an animal repellent material and/or insect repellent material and/or a pheremone material. The solidified pellets may if desired, then be mixed in, for example, a second extruder with a second amount of unscented polycaprolactone or other polymer, e.g., polyolefin, the second amount of polymer being the same or somewhat larger than the first amount. The mixture thus obtained may again be solidified and, if desired, repelletized. The resulting pellets may, if desired, be formed into functional articles by means of, for example, injection molding.

Inventors

  • 👤 Marina A. Munteanu
  • 👤 Edward S. Oltarzewski
  • 👤 Leon Shechter
  • 👤 Craig B. Warren

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 15:43
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/50; C11D3/502; C11D3/505; C11D17/00; C11D17/04; C11D17/041; C11D17/048; C11D3/16; C11D3/37; C11D3/3703; C11D3/3715

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 402 words
A process for the preparation of a detergent bar by augmenting or enhancing the aroma of a void comprising; (i) the step of placing into said void a scented poly(epsilon caprolactone) homopolymer having the structure: ##STR7## and from 0 up to a minor proportion of the structure: ##STR8## wherein n is an integer of from about 500 up to about 1,200 with the proviso that the average n in the system varies from about 600 up to about 800 in the solid phase and imbedded in said polymer an aromatizing agent which is compatible with said polymer and a stablilizing agent; (ii) surrounding said plastic core and in intimate contact with the surface area of said plastic core, and adhering to said plastic core a detergent composition existing in the solid phase, said detergent composition having a defined outer surface the quantity of aromatizing agent within the plastic core, the physical properties of the plastic core, and the physical properties of the detergent composition surrounding the plastic core being such that the aromatizing agent is transported at a steady state from the plastic core into said detergent composition past the outer surface of said detergent composition and into the environment surrounding said detergent bar, said aromatizing agent being compatible with said detergent composition, said detergent bar being produced by the process consisting essentially of the steps of: (a) forming a first flowable mass of said poly(epsilon caprolactone) homopolymer in intimate admixture with from 1% up to 30% by weight of aromatizing agent; (b) casusing the flowable mass to be formed into an extruded rod; (c) pelletizing the thus formed extruded rod to form pellets in the solid state; have imbedded therein from 1% up to 30% aromatizing agent; (d) molding the resulting pellets into a functional article internal core for detergent bars; and (e) placing the functional article into said void; (f) propelling a detergent composition in the fluid state in such a manner as to cause said detergent to surround the aromatized plastic core; and (g) causing the detergent composition surrounding the aromatized thermoplastic polymeric core to harden; the amount of aromatizing agent in said poly(epsilon caprolactone) homopolymer being in the range of from about 1% up to about 30% by weight of the poly(epsilon caprolactone) homopolymer, said poly(epsilon caprolactone) homopolymer containing a stabilizer therefor, the aromatizing agent being transported as a steady state into said void surrounding the thus-produced article.
Claim 2
Dependent Claim 402 words
A process for the preparation of a detergent bar by augmenting or enhancing the aroma of a void comprising; (i) the step of placing into said void a scented poly(epsilon caprolactone) homopolymer having the structure: ##STR7## and from 0 up to a minor proportion of the structure: ##STR8## wherein n is an integer of from about 500 up to about 1,200 with the proviso that the average n in the system varies from about 600 up to about 800 in the solid phase and imbedded in said polymer an aromatizing agent which is compatible with said polymer and a stablilizing agent; (ii) surrounding said plastic core and in intimate contact with the surface area of said plastic core, and adhering to said plastic core a detergent composition existing in the solid phase, said detergent composition having a defined outer surface the quantity of aromatizing agent within the plastic core, the physical properties of the plastic core, and the physical properties of the detergent composition surrounding the plastic core being such that the aromatizing agent is transported at a steady state from the plastic core into said detergent composition past the outer surface of said detergent composition and into the environment surrounding said detergent bar, said aromatizing agent being compatible with said detergent composition, said detergent bar being produced by the process consisting essentially of the steps of: (a) forming a first flowable mass of said poly(epsilon caprolactone) homopolymer in intimate admixture with from 1% up to 30% by weight of aromatizing agent; (b) casusing the flowable mass to be formed into an extruded rod; (c) pelletizing the thus formed extruded rod to form pellets in the solid state; have imbedded therein from 1% up to 30% aromatizing agent; (d) molding the resulting pellets into a functional article internal core for detergent bars; and (e) placing the functional article into said void; (f) propelling a detergent composition in the fluid state in such a manner as to cause said detergent to surround the aromatized plastic core; and (g) causing the detergent composition surrounding the aromatized thermoplastic polymeric core to harden; the amount of aromatizing agent in said poly(epsilon caprolactone) homopolymer being in the range of from about 1% up to about 30% by weight of the poly(epsilon caprolactone) homopolymer, said poly(epsilon caprolactone) homopolymer containing a stabilizer therefor, the aromatizing agent being transported as a steady state into said void surrounding the thus-produced article.
Claim 3
Dependent Claim 27 words
The process of claim 1 wherein the article produced contains a functional fluid which is a perfume and the perfume is compatible with said poly(epsilon caprolactone) homopolymer.

References Cited (Backward Citations)

GB190321373A Cited
US1580576A Cited
US3576778A Cited
US3929937A Cited
US4277358A Cited
US4308157A Cited
JPS57137351A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-01-29 1988-07-30 1989-01-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-01-29 1992-07-30 1993-01-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-01-29 1996-07-30 1997-01-29 $7700.00 Window Closed / Lapsed

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