Air scenting compositions and processes for use thereof in air scenting devices
First Claim
Patent Images
1. An HVAC system including:
- a) an air freshening composition comprising a thermoplastic, semi-permeable polymeric gel having a fragrance material incorporated therein, b) a filter member including an air permeable filter medium;
c) the polymeric gel containing a polymeric gelling agent selected from the group consisting of hydrogenated styrene/isoprene copolymers;
volatile silicones;
polyacrylic acids and mixtures thereof and being formulated to adhere directly on a surface of the filter member, the gel having sufficient viscosity at temperatures in the range of about 40°
F. to about 150°
F. to prevent run off of the gel from the surface of the filter to which it is adhered and to enable effective release of scented, volatile components in the fragrance material to provide an air freshening scent to air passing through the filter by dispersing the scented, volatile components into the air over a predetermined period of time.
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Abstract
Disclosed are compositions, processes and devices for use in HVAC systems to provide air freshening scent to air circulating in the system.
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Citations
26 Claims
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1. An HVAC system including:
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a) an air freshening composition comprising a thermoplastic, semi-permeable polymeric gel having a fragrance material incorporated therein, b) a filter member including an air permeable filter medium;
c) the polymeric gel containing a polymeric gelling agent selected from the group consisting of hydrogenated styrene/isoprene copolymers;
volatile silicones;
polyacrylic acids and mixtures thereof and being formulated to adhere directly on a surface of the filter member, the gel having sufficient viscosity at temperatures in the range of about 40°
F. to about 150°
F. to prevent run off of the gel from the surface of the filter to which it is adhered and to enable effective release of scented, volatile components in the fragrance material to provide an air freshening scent to air passing through the filter by dispersing the scented, volatile components into the air over a predetermined period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A process for scenting air in a forced air HVAC system including a mechanical source for circulating ambient air comprising:
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a) providing a filter member including an air permeable filter medium;
b) adhering a scented thermoplastic, semi-permeable polymeric gel composition directly onto a surface of the permeable filter medium;
the polymeric gel composition containing a polymeric gelling agent selected from the group consisting of hydrogenated styrene/isoprene copolymers;
volatile silicones;
polyacrylic acids and mixtures thereof and having a fragrance material incorporated therein, the polymeric gel having sufficient viscosity at temperatures in the range of about 40°
F. to about 150°
F. to prevent run off of the gel from the surface of the filter to which it is adhered and to enable effective release of scented, volatile components in the fragrance material; and
c) positioning the filter member having the gel composition adhered to the surface of the filter medium in an HVAC system so that the ambient air circulated by the mechanical source contacts the gel composition on the permeable filter medium and disperses the scented, volatile components from the gel composition into the circulating ambient air. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A device for scenting air in a forced air HVAC system including a mechanical source of air flow for circulating ambient air through the system comprising:
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a filter supported in a frame within the HVAC system including an air permeable filter medium having an upstream facing surface and a downstream facing surface with the ambient air circulating in the system passing through the filter medium in a direction from the upstream facing surface of the filter medium to the downstream facing surface; and
a scented gel composition adhered directly on the downstream facing surface of the filter medium whereby the circulating air initially contacts the scented gel composition after the circulating air has passed through the filter medium and the air passes through the gel composition to scent the air circulating in the system downstream of the filter;
the gel composition comprising a thermoplastic, semi-permeable polymeric gel containing a polymeric gelling agent selected from the group consisting of hydrogenated styrene/isoprene copolymers;
volatile silicones;
polyacrylic acids and mixtures thereof and having a fragrance material incorporated therein, the polymeric gel having sufficient viscosity at temperatures in the range of about 40°
F. to about 150°
F. to prevent run off of the gel from the surface of the filter to which it is adhered and to enable effective release of scented, volatile components in the fragrance material to provide an air freshening scent to air passing through the filter by dispersing the scented, volatile components into the air over a predetermined period of time. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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Specification