US5286787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture-curing polyurethane sealing compounds having improved properties
Assignee: Henkel AG and Co KGaA
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Filing: 1990-12-17
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Granted: 1994-02-15
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Expires: 2010-12-17
Abstract
Abstract Moisture-curing jointing and sealing compounds containing polyurethane prepolymers are made more stable to weathering conditions by addition thereto of a reactive polysiloxane containing one or more functional groups which react with the polyurethane propolymers.
Inventors
- 👤 Tore Podola
- 👤 Martin Majolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:46
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1006; C09K3/1021; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08L; C08L75/00; C08L75/04; C08G2190/00; C09K2003/1034; C09K2003/1056; C09K2200/00; C09K2200/06; C09K2200/0615; C09K2200/0635; C09K2200/068; C09K2200/0685
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
60 words
A moisture-curing jointing and sealing compound composition having improved stability against weather conditions, said composition comprising an NCO-terminated polyurethane prepolymer containing on average 2 or more isocyanate groups in the molecule, and a reactive polysiloxane containing one or more functional groups which react with said polyurethane prepolymer or the compound formed therefrom as a result of moisture curing said composition,
Claim 2
Dependent Claim
60 words
A moisture-curing jointing and sealing compound composition having improved stability against weather conditions, said composition comprising an NCO-terminated polyurethane prepolymer containing on average 2 or more isocyanate groups in the molecule, and a reactive polysiloxane containing one or more functional groups which react with said polyurethane prepolymer or the compound formed therefrom as a result of moisture curing said composition,
Claim 3
Dependent Claim
32 words
A composition as in claim 1 wherein said reactive polysiloxane is present in an amount of from about 1 to about 30% by weight, based on the weight of said polyurethane prepolymer.
Claim 4
Dependent Claim
29 words
A composition as in claim 1 wherein said reactive polysiloxane is selected from the group consisting of an epoxy-modified polysiloxane, a polyhydrogen alkyl siloxane, and a silanol modified polysiloxane.
Claim 5
Dependent Claim
25 words
A composition as in claim 1 wherein said reactive polysiloxane has a viscosity at about 23° C. of from about 25 to about 500 Pas.
Claim 6
Dependent Claim
100 words
A composition as in claim 1 comprising; (a) from about 20 to about 40%/wt of said polyurethane prepolymer, (b) from about 20 to about 40%/wt of a swellable polymer powder, (c) from about 15 to about 35%/wt of a plasticizer, (d) from about 1 to about 10%/wt of a swelling aid, (e) from about 0.2 to about 12%/wt of said reactive polysiloxane, (f) from about 1 to about 10%/wt of a pigment or dye, (g) from about 1 to about 10%/wt of a stabilizer, and optionally, (h) from about 0.01 to about 10%/wt of a catalyst for said polyurethane prepolymer.
Claim 7
Dependent Claim
100 words
A composition as in claim 1 comprising; (a) from about 25 to about 35%/wt of said polyurethane prepolymer, (b) from about 25 to about 35%/wt of a swellable polymer powder, (c) from about 20 to about 30%/wt of a plasticizer, (d) from about 3 to about 7%/wt of a swelling aid, (e) from about 1 to about 10%/wt of said reactive polysiloxane, (f) from about 4 to about 9%/wt of a pigment or dye, (g) from about 1 to about 5%/wt of a stabilizer, and optionally, (h) from about 0.01 to about 2%/wt of a catalyst for said polyurethane prepolymer.
Claim 8
Dependent Claim
24 words
A composition as in claim 1 wherein said polyurethane prepolymer comprises a reaction product of a polyether polyol with an excess of a diisocyanate.
Claim 9
Dependent Claim
14 words
A composition as in claim 1 containing polyvinyl chloride as a swellable polymer powder.
Claim 10
Dependent Claim
26 words
A composition as in claim 1 containing a plasticizer selected from the group consisting of a phthalic acid ester, an alkylsulfonic acid ester, and a chloroparaffin.
Claim 11
Dependent Claim
27 words
A composition as in claim 1 containing a swelling aid selected from the group consisting of an ester, a ketone, an aliphatic hydrocarbon, and an aromatic hydrocarbon.
Claim 12
Dependent Claim
36 words
A composition as in claim 1 containing a stabilizer selected from the group consisting of benzoyl chloride, acetyl chloride, toluenesulfonic acid methyl ester, a carbodiimide, a polycarbodiimide, and an olefin containing 8 to 20 carbon atoms.
Claim 13
Dependent Claim
67 words
The process of improving the long-term stability against weather conditions of a moisture-curing jointing and sealing compound based on an NCO-terminated polyurethane prepolymer containing on average 2 or more isocyanate groups in the molecule, comprising adding to said compound a reactive polysiloxane containing one or more functional groups which react with said polyurethane prepolymer or the compound formed therefrom as a result of moisture curing said compound.
Claim 14
Dependent Claim
67 words
The process of improving the long-term stability against weather conditions of a moisture-curing jointing and sealing compound based on an NCO-terminated polyurethane prepolymer containing on average 2 or more isocyanate groups in the molecule, comprising adding to said compound a reactive polysiloxane containing one or more functional groups which react with said polyurethane prepolymer or the compound formed therefrom as a result of moisture curing said compound.
Claim 15
Dependent Claim
32 words
A process as in claim 12 wherein said reactive polysiloxane is added in an amount of from about 1 to about 30% by weight, based on the weight of said polyurethane prepolymer.
Claim 16
Dependent Claim
28 words
A process as in claim 12, wherein said reactive polysiloxane is selected from the group consisting of an epoxy-modified polysiloxane, a polyhydrogen alkyl siloxane, and a silanol-modified polysiloxane.
Claim 17
Dependent Claim
25 words
A process as in claim 12 wherein said reactive polysiloxane has a viscosity at about 23° C. of from about 25 to about 500 Pas.
Claim 18
Dependent Claim
103 words
A process as in claim 12 wherein said compound contains: (a) from about 20 to about 40%/wt of said polyurethane prepolymer, (b) from about 20 to about 40%/wt of a swellable polymer powder, (c) from about 15 to about 35%/wt of a plasticizer, (d) from about 1 to about 10%/wt of a swelling aid, (e) from about 0.2 to about 12%/wt of said reactive polysiloxane, (f) from about 1 to about 10%/wt of a pigment or dye, (g) from about 1 to about 10%/wt of a stabilizer, and optionally, (h) from about 0.01 to about 10%/wt of a catalyst for said polyurethane prepolymer.
Claim 19
Dependent Claim
103 words
A process as in claim 12 wherein said compound contains; (a) from about 25 to about 35%/wt of said polyurethane prepolymer, (b) from about 25 to about 35%/wt of a swellable polymer powder, (c) from about 20 to about 30%/wt of a plasticizer, (d) from about 3 to about 7%/wt of a swelling aid, (e) from about 1 to about 10%/wt of said reactive polysiloxane, (f) from about 4 to about 9%/wt of a pigment or dye, (g) from about 1 to about 5%/wt of a stabilizer, and optionally, (h) from about 0.01 to about 2%/wt of a catalyst for said polyurethane prepolymer.
Claim 20
Dependent Claim
24 words
A process as in claim 12 wherein said polyurethane prepolymer comprises a reaction product of a polyether polyol with an excess of a diisocyanate.
Claim 21
Dependent Claim
17 words
A process as in claim 12 wherein said compound contains polyvinyl chloride as a swellable polymer powder.
Claim 22
Dependent Claim
29 words
A process as in claim 12 wherein said compound contains a plasticizer selected from the group consisting of a phthalic acid ester, an alkylsulfonic acid ester, and a chloroparaffin.
Claim 23
Dependent Claim
30 words
A process as in claim 12 wherein said compound contains a swelling aid selected from the group consisting of an ester, a ketone, an aliphatic hydrocarbon, and an aromatic hydrocarbon.
Claim 24
Dependent Claim
39 words
A process as in claim 12 wherein said compound contains a stabilizer selected from the group consisting of benzoyl chloride, acetyl chloride, toluenesulfonic acid methyl ester, a carbodiimide, a polycarbodiimide, and an olefin containing 8 to 20 carbon atoms.
Claim 25
Dependent Claim
32 words
A composition as in claim 1 further containing an additive selected from the group consisting of an isocyanate-inert filler, a plasticizer, a thixotropic agent, a swelling aid, a pigment, and a dye.
Claim 26
Dependent Claim
35 words
A process as in claim 12 wherein said compound further contains an additive selected from the group consisting of an isocyanate-inert filler, a plasticizer, a thixotropic agent, a swelling aid, a pigment, and a dye.
References Cited (Backward Citations)
DE3629237A1
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-02-14 | 1997-08-16 | 1998-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-14 | 2001-08-16 | 2002-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-14 | 2005-08-16 | 2006-02-15 | $7700.00 | Window Closed / Lapsed |