Patent US4292412A successfully refreshed from Google Patents.
US4292412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrophilic, fabric softener foam compositions and method of making
Assignee: WR SEARLE & Co A CORP OF CT
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Filing: 1980-01-16
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Granted: 1981-09-29
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Expires: 2000-01-16
Abstract
Abstract This invention relates to new, hydrophilic, fabric softener foam compositions having improved release ability of the fabric softener abetted by the addition of a hydrophilic polyether polyol release agent to the aqueous reactant containing the fabric softener prior to reacting the aqueous reactant with a hydrophilic, isocyanate-terminated prepolymer to form the foam.
Inventors
- 👤 Louis L. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:33
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0094; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08J; C08J9/00; C11D17/00; C11D17/04; C11D17/041; C11D17/046; C11D3/001; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S521/00; Y10S521/905
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
A fabric softener-containing, urethane foam-forming composition comprising (a) a water reactant; (b) a prepolymer comprising at least one isocyanate-capped polyol having a reaction functionality of at least two, the total of said polyol present having an ethylene oxide content of at least 40 weight percent before capping; (c) when the reaction functionality of (b) is two, a crosslinking agent containing at least three functional groups; (d) a hydrophilic polyether polyol release agent and (e) a fabric softener, the weight ratio of (a):(b) being 0.3 to 2.0:1.0.
Claim 2
Dependent Claim
86 words
A fabric softener-containing, urethane foam-forming composition comprising (a) a water reactant; (b) a prepolymer comprising at least one isocyanate-capped polyol having a reaction functionality of at least two, the total of said polyol present having an ethylene oxide content of at least 40 weight percent before capping; (c) when the reaction functionality of (b) is two, a crosslinking agent containing at least three functional groups; (d) a hydrophilic polyether polyol release agent and (e) a fabric softener, the weight ratio of (a):(b) being 0.3 to 2.0:1.0.
Claim 3
Dependent Claim
20 words
The composition of claim 1 wherein the release agent is polyethylene glycol having a molecular weight in the range 100-20,000.
Claim 4
Dependent Claim
15 words
The composition of claim 2 wherein the release agent has a molecular weight of 600-2,000.
Claim 5
Dependent Claim
80 words
The process of forming a hydrophilic polyurethane foam containing a fabric softener and release agent which comprises adding to a hydrophilic prepolymer comprising at least one isocyanate-capped polyol having a reaction functionality greater than two, the total of said polyol present having an ethylene oxide content of at least 40 weight percent before capping, a water reactant containing a fabric softener and a hydrophilic polyether polyol release agent, the weight ratio of the water reactant; prepolymer being 0.3 to 2.0:1.0.
Claim 6
Dependent Claim
80 words
The process of forming a hydrophilic polyurethane foam containing a fabric softener and release agent which comprises adding to a hydrophilic prepolymer comprising at least one isocyanate-capped polyol having a reaction functionality greater than two, the total of said polyol present having an ethylene oxide content of at least 40 weight percent before capping, a water reactant containing a fabric softener and a hydrophilic polyether polyol release agent, the weight ratio of the water reactant; prepolymer being 0.3 to 2.0:1.0.
Claim 7
Dependent Claim
71 words
A fabric softener-containing, urethane foam forming composition comprising (a) 50-200 parts of a water reactant; (b) 100 parts of a prepolymer comprising at least one isocyanate-capped polyol having a reaction functionality greater than two, the total of said polyol present having an ethylene oxide content of at least 40 weight percent before capping; (c) 10-200 parts of a hydrophilic polyether polyol release agent and (d) 10-200 parts of a fabric softener.
Claim 8
Dependent Claim
71 words
A fabric softener-containing, urethane foam forming composition comprising (a) 50-200 parts of a water reactant; (b) 100 parts of a prepolymer comprising at least one isocyanate-capped polyol having a reaction functionality greater than two, the total of said polyol present having an ethylene oxide content of at least 40 weight percent before capping; (c) 10-200 parts of a hydrophilic polyether polyol release agent and (d) 10-200 parts of a fabric softener.
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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) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |