Patent US4289892A successfully refreshed from Google Patents.
US4289892A
Expired / Lapsed
US
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Fluorochemical foam stabilizer and foamed polyurethanes made therewith
Assignee: 3M Co
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Filing: 1979-04-30
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Granted: 1981-09-15
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Expires: 1999-04-30
Abstract
Abstract Active hydrogen-containing fluorochemical is used as a foam stabilizer for polyurethane foams. For example, rigid or flexible polyurethane foams with high or low density and uniform cellular structure are prepared using fluoroaliphatic radical-substituted poly(oxyalkylene) polyols as foam stabilizers.
Inventors
- 👤 Fredrich A. Soch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:00
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3855; C08G18/3857; C08G18/3861; C08G65/00; C08G65/02; C08G65/26; C08G65/2639; C08J2375/00; C08J2375/04; C08J2471/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
130 words
A fluoroaliphatic radical-substituted polyol having the formula ##STR14## wherein R f is a fluorinated, saturated, monovalent, aliphatic, stable, non-polar, inert, oleophobic, hydrophobic radical having 4 to 20 carbon atoms and 40 to 78 weight percent fluorine terminating in at least three fully fluorinated carbon atoms, Q is a linkage free of active hydrogen atoms and has a valence equal to m+n', m is an integer of at least 1, n' is an integer of at least 2, a and b are integers of at least 1, the sum of a+b being at least 5 and the weight ratio of a:b being 20:80 to 80:20, said polyol having a fluorine content of 4-25 weight percent and an average molecular weight of at least 4500, and z is an integer of 1-3.
Claim 2
Dependent Claim
130 words
A fluoroaliphatic radical-substituted polyol having the formula ##STR14## wherein R f is a fluorinated, saturated, monovalent, aliphatic, stable, non-polar, inert, oleophobic, hydrophobic radical having 4 to 20 carbon atoms and 40 to 78 weight percent fluorine terminating in at least three fully fluorinated carbon atoms, Q is a linkage free of active hydrogen atoms and has a valence equal to m+n', m is an integer of at least 1, n' is an integer of at least 2, a and b are integers of at least 1, the sum of a+b being at least 5 and the weight ratio of a:b being 20:80 to 80:20, said polyol having a fluorine content of 4-25 weight percent and an average molecular weight of at least 4500, and z is an integer of 1-3.
Claim 3
Dependent Claim
130 words
A fluoraliphatic radical-substituted poly(oxyalkylene) polyol having the formula ##STR15## wherein R f is a fluorinated, saturated, monovalent, aliphatic, stable, non-polar, inert, oleophobic, hydrophobic radical having 4 to 20 carbon atoms and 40 to 78 weight percent fluorine and terminating in at least three fully fluorinated carbon atoms, Q is a linkage free of active hydrogen atoms and having a valence equal to m+n', m is an integer of at least 1, n' is an integer of at least 2, and a and b are integers of at least 4 and designate blocks of oxyethylene and oxypropylene units, respectively, and the weight ratio of a:b being 20:80 to 80:20, said polyol having fluorine content of 4-25 weight percent and an average molecular weight of at least 4500, and z is 1-3.
Claim 4
Dependent Claim
130 words
A fluoraliphatic radical-substituted poly(oxyalkylene) polyol having the formula ##STR15## wherein R f is a fluorinated, saturated, monovalent, aliphatic, stable, non-polar, inert, oleophobic, hydrophobic radical having 4 to 20 carbon atoms and 40 to 78 weight percent fluorine and terminating in at least three fully fluorinated carbon atoms, Q is a linkage free of active hydrogen atoms and having a valence equal to m+n', m is an integer of at least 1, n' is an integer of at least 2, and a and b are integers of at least 4 and designate blocks of oxyethylene and oxypropylene units, respectively, and the weight ratio of a:b being 20:80 to 80:20, said polyol having fluorine content of 4-25 weight percent and an average molecular weight of at least 4500, and z is 1-3.
Claim 5
Dependent Claim
200 words
A fluoroaliphatic radical-substituted polyol having the formula ##STR16## wherein R f is a fluorinated, saturated, stable, non-polar, inert, olephobic, hydrophobic, monovalent, aliphatic radical having 4 to 20 carbon atoms and 40 to 78 weight percent fluorine and terminating in at least three fully fluorinated carbon atoms, said R f being straight chain, branched chain, cyclic, or a combination thereof and having a skeletal chain which can include catenary oxygen or trivalent nitrogen hetero atoms, or both said hetero atoms, bonded only to carbon atoms. Q is a linkage free of active hydrogen atoms and has a valence equal to m+n', said Q being a valence bond or a polyvalent aliphatic, polyvalent aromatic, oxy, thio, carbonyl, sulfone, sulfoxy, --N(C 2 H 5 )--, oxyalkylene, sulfonamido carbonamido, sulfonamidoalkylene, carbonamidoalkylene, urethane, or urea radical, m is an integer of at least 1, n' is an integer of at least 2, a and b are integers of at least 1, the sum of a+b being at least 5 and the weight ratio of a:b being 20:80 to 80:20, and z is an integer of 1-3, said polyol having a fluorine content of 4-25 weight percent and an average molecular weight of at least 4500.
Claim 6
Dependent Claim
200 words
A fluoroaliphatic radical-substituted polyol having the formula ##STR16## wherein R f is a fluorinated, saturated, stable, non-polar, inert, olephobic, hydrophobic, monovalent, aliphatic radical having 4 to 20 carbon atoms and 40 to 78 weight percent fluorine and terminating in at least three fully fluorinated carbon atoms, said R f being straight chain, branched chain, cyclic, or a combination thereof and having a skeletal chain which can include catenary oxygen or trivalent nitrogen hetero atoms, or both said hetero atoms, bonded only to carbon atoms. Q is a linkage free of active hydrogen atoms and has a valence equal to m+n', said Q being a valence bond or a polyvalent aliphatic, polyvalent aromatic, oxy, thio, carbonyl, sulfone, sulfoxy, --N(C 2 H 5 )--, oxyalkylene, sulfonamido carbonamido, sulfonamidoalkylene, carbonamidoalkylene, urethane, or urea radical, m is an integer of at least 1, n' is an integer of at least 2, a and b are integers of at least 1, the sum of a+b being at least 5 and the weight ratio of a:b being 20:80 to 80:20, and z is an integer of 1-3, said polyol having a fluorine content of 4-25 weight percent and an average molecular weight of at least 4500.
Claim 7
Dependent Claim
10 words
The polyol of claim 3 wherein R f is perfluoroalkyl.
Claim 8
Dependent Claim
198 words
A fluoroaliphatic radical-substituted poly(oxyalkylene) polyol having the formula ##STR17## wherein R f is a fluorinated, saturated, stable, non-polar, inert, oleophobic, hydrophobic, monovalent, aliphatic radical having 4 to 20 carbon atoms and 40 to 78 weight percent fluorine and terminating in at least three fully fluorinated carbon atoms, said R f being straight chain, branched chain, cyclic, or a combination thereof and having a skeletal chain which can include catenary oxygen or trivalent nitrogen hetero atoms, or both said hetero atoms, bonded only to carbon atoms, Q is a linkage free of active hydrogen atoms and having a valence equal to m+n', said Q being a valence bond or a polyvalent aliphatic, polyvalent aromatic, oxy, thio, carbonyl, sulfone, sulfoxy, --N(C 2 H 5 )--, oxyalkylene, sulfonamido, carbonamido, sulfoanamidoalkylene, carbonamidoalkylene, urethane, or urea radical, m is an integer of at least 1, n' is an integer of at least 2, a and b are integers of at least 4 and designate blocks of oxyethylene and oxypropylene units, respectively, the weight ratio of a:b being 20:80 to 80:20, and z is 1-3, said polyol having a fluorine content of 4-25 weight percent and an average molecular weight of at least 4500.
Claim 9
Dependent Claim
198 words
A fluoroaliphatic radical-substituted poly(oxyalkylene) polyol having the formula ##STR17## wherein R f is a fluorinated, saturated, stable, non-polar, inert, oleophobic, hydrophobic, monovalent, aliphatic radical having 4 to 20 carbon atoms and 40 to 78 weight percent fluorine and terminating in at least three fully fluorinated carbon atoms, said R f being straight chain, branched chain, cyclic, or a combination thereof and having a skeletal chain which can include catenary oxygen or trivalent nitrogen hetero atoms, or both said hetero atoms, bonded only to carbon atoms, Q is a linkage free of active hydrogen atoms and having a valence equal to m+n', said Q being a valence bond or a polyvalent aliphatic, polyvalent aromatic, oxy, thio, carbonyl, sulfone, sulfoxy, --N(C 2 H 5 )--, oxyalkylene, sulfonamido, carbonamido, sulfoanamidoalkylene, carbonamidoalkylene, urethane, or urea radical, m is an integer of at least 1, n' is an integer of at least 2, a and b are integers of at least 4 and designate blocks of oxyethylene and oxypropylene units, respectively, the weight ratio of a:b being 20:80 to 80:20, and z is 1-3, said polyol having a fluorine content of 4-25 weight percent and an average molecular weight of at least 4500.
Claim 10
Dependent Claim
10 words
The polyol of claim 5 where R f is perfluoroalkyl.
Claim 11
Dependent Claim
51 words
A fluoroaliphatic radical-substituted poly(oxyalkylene) polyol having the formula ##STR18## wherein a and b are integers of at least 4 and designate blocks of oxyethylene and oxypropylene units respectively, the ratio of oxyethylene units: oxypropylene units being 20:80 to 80:20, said stabilizer having a fluorine content of 4 to 25 weight percent.
Claim 12
Dependent Claim
51 words
A fluoroaliphatic radical-substituted poly(oxyalkylene) polyol having the formula ##STR18## wherein a and b are integers of at least 4 and designate blocks of oxyethylene and oxypropylene units respectively, the ratio of oxyethylene units: oxypropylene units being 20:80 to 80:20, said stabilizer having a fluorine content of 4 to 25 weight percent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |