US4226944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for a polyurethane foam containing fragrance
Assignee: GFC FOAM Corp A CORP OF DE
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Filing: 1978-11-13
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Granted: 1980-10-07
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Expires: 1998-11-13
Abstract
Abstract Fragrance-emitting articles comprising a polyurethane foam containing a particulate filler and a fragrance material, and a method of making such articles, are disclosed. The method includes the essential steps of pre-mixing particulate filler and fragrance and dispersing the pre-mix in a liquid polyol, before adding the other reaction mixture components, and provides a polyurethane foam having a controlled rate of release of the fragrance.
Inventors
- 👤 Herman Stone
- 👤 Peter D. Pauly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:47
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0004; A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/042; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S428/00; Y10S428/905; Y10S521/00; Y10S521/905
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
87 words
A process for the manufacture of a polyurethane foam containing a particulate filler and a fragrance which comprises the steps of mixing at least one particulate filler with at least one fragrance material to form a first mixture, mixing said first mixture with at least one liquid polyol to form a second mixture, and then mixing said second mixture with at least one organic polyisocyanate, water, and at least one catalyst whereby a polyurethane foam capable of releasing fragrance at a controlled and steady rate is produced.
Claim 2
Dependent Claim
87 words
A process for the manufacture of a polyurethane foam containing a particulate filler and a fragrance which comprises the steps of mixing at least one particulate filler with at least one fragrance material to form a first mixture, mixing said first mixture with at least one liquid polyol to form a second mixture, and then mixing said second mixture with at least one organic polyisocyanate, water, and at least one catalyst whereby a polyurethane foam capable of releasing fragrance at a controlled and steady rate is produced.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein the particulate filler is clay.
Claim 4
Dependent Claim
31 words
The process of claim 2 wherein the clay is kaolin coated with from about 0.2 to about 2 percent by weight, based upon the weight of the kaolin, of a polyamine.
Claim 5
Dependent Claim
11 words
The process of claim 3 wherein the polyamine is ethylene diamine.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein the particulate filler is limestone.
Claim 7
Dependent Claim
16 words
The process of claim 1 wherein the particulate filler is a combination of clay and soap.
Claim 8
Dependent Claim
18 words
The process of claim 1 wherein the particulate filler is a combination of clay and a synthetic detergent.
Claim 9
Dependent Claim
14 words
The process of claim 7 wherein the synthetic detergent is linear dodecylbenzene sodium sulfonate.
Claim 10
Dependent Claim
11 words
The process of claim 1 wherein the particulate filler is soap.
Claim 11
Dependent Claim
12 words
The process of claim 1 wherein the polyol is a polyether polyol.
Claim 12
Dependent Claim
12 words
The process of claim 1 wherein the polyol is a polyester polyol.
Claim 13
Dependent Claim
18 words
The process of claim 1 wherein the organic polyisocyanate is a 65/35 percent mixture of 2,4-tolylene diisocyanate/2,6-tolylene diisocyanate.
Claim 14
Dependent Claim
18 words
The process of claim 1 wherein the organic polyisocyanate is a 75/25 percent mixture of 2,4-tolylene diisocyanate/2,6-tolylene diisocyanate.
Claim 15
Dependent Claim
8 words
The product of the process of claim 1.
Claim 16
Dependent Claim
8 words
The product of the process of claim 2.
Claim 17
Dependent Claim
8 words
The product of the process of claim 3.
Claim 18
Dependent Claim
8 words
The product of the process of claim 4.
Claim 19
Dependent Claim
8 words
The product of the process of claim 5.
Claim 20
Dependent Claim
8 words
The product of the process of claim 6.
Claim 21
Dependent Claim
8 words
The product of the process of claim 7.
Claim 22
Dependent Claim
8 words
The product of the process of claim 8.
Claim 23
Dependent Claim
8 words
The product of the process of claim 9.
Claim 24
Dependent Claim
8 words
The product of the process of claim 10.
Claim 25
Dependent Claim
8 words
The product of the process of claim 11.
Claim 26
Dependent Claim
8 words
The product of the process of claim 12.
Claim 27
Dependent Claim
8 words
The product of the process of claim 13.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |