Patent EP0166118A2 successfully refreshed from Google Patents.
US4920167A
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Antistatic polyurethane-urea dispersions
Assignee: Dow Chemical Co
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Filing: 1988-11-10
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Granted: 1990-04-24
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Expires: 2008-11-10
Abstract
Abstract Disclosed is dispersion of a polyurethane-urea polymer in a continuous phase. This dispersion contains about 0.1 to about 5 parts by weight of an ionizable, non-volatile salt per 100 parts by weight of polyurethane-urea polymer. Polyurethane-urea coatings made from this dispersion have excellent static dissipative properties.
Inventors
- 👤 Sven H. Ruetman
- 👤 Joginder N. Anand
- 👤 G. Robert Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:54
CPC Classifications
C; C09; C09D; C09D175/00; C09D175/04; C08; C08K; C08K3/00; C08K3/01; C08K3/017; C08K3/30; C08K5/00; C08K5/0008; C08K5/0075; C08K5/36; C08K5/41; C08K5/42; C08K5/55
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
50 words
A dispersion of a polyurethane-urea polymer in a continuous aqueous phase, said dispersion containing about 0.1 to about 5 parts by weight of an alkali metal or alkaline earth metal salt of a thiocyanate ion, fluorinated alkyl sulfonate ion or tetraorganoboron ion per 100 parts by weight of polyurethane-urea polymer.
Claim 2
Dependent Claim
50 words
A dispersion of a polyurethane-urea polymer in a continuous aqueous phase, said dispersion containing about 0.1 to about 5 parts by weight of an alkali metal or alkaline earth metal salt of a thiocyanate ion, fluorinated alkyl sulfonate ion or tetraorganoboron ion per 100 parts by weight of polyurethane-urea polymer.
Claim 3
Dependent Claim
27 words
The dispersion of claim 1, wherein the polyurethane-urea polymer is a neutralized reaction product of a reaction mixture comprising a polyamine curing agent and an isocyanate-terminated prepolymer.
Claim 4
Dependent Claim
28 words
The dispersion of claim 2, wherein said prepolymer is the reaction product of a polyisocyanate, a polyether polyol and a polyol containing an ionic or potentially ionic group.
Claim 5
Dependent Claim
34 words
The dispersion of claim 3 wherein said prepolymer contains about 10 to about 150 milliequivalent of ionic groups/100 grams, and said polyol containing an ionic or potentially ionic group is a dihydroxy alkanoic acid.
Claim 6
Dependent Claim
11 words
The dispersion of claim 4 wherein the continuous phase is aqueous.
Claim 7
Dependent Claim
19 words
The dispersion of claim 1 wherein the salt is a tetraphenyl boron salt or a fluorinated alkyl sulfonate salt.
Claim 8
Dependent Claim
19 words
The dispersion of claim 4 wherein the salt is a tetraphenyl boron salt or a fluorinated alkyl sulfonate salt.
Claim 9
Dependent Claim
19 words
The dispersion of claim 5 wherein the salt is a tetraphenyl boron salt or a fluorinated alkyl sulfonate salt.
Claim 10
Dependent Claim
28 words
The dispersion of claim 2, wherein said prepolymer is the reaction product of a polyisocyanate, a polyester polyol and a polyol containing an ionic or potentially ionic group.
Claim 11
Dependent Claim
47 words
A substrate having a static dissipative coating comprising a polyurethane-urea polymer having dispersed therein from about 0.1 to about 5 parts, per 100 parts by weight polymer, of an alkali metal or alkaline earth metal salt of a thiocyanate ion, fluorinated alkyl sulfonate ion or tetraorganoboron ion.
Claim 12
Dependent Claim
47 words
A substrate having a static dissipative coating comprising a polyurethane-urea polymer having dispersed therein from about 0.1 to about 5 parts, per 100 parts by weight polymer, of an alkali metal or alkaline earth metal salt of a thiocyanate ion, fluorinated alkyl sulfonate ion or tetraorganoboron ion.
Claim 13
Dependent Claim
19 words
The substrate of claim 10 wherein the salt is a tetraphenyl boron salt or a fluorinated alkyl sulfonate salt.
Claim 14
Dependent Claim
27 words
The substrate of claim 10 wherein the polyurethane-urea polymer is a neutralized reaction product of a reaction mixture comprising a polyamine curing agent and an isocyanate-terminated prepolymer.
Claim 15
Dependent Claim
28 words
The substrate of claim 12 wherein said prepolymer is the reaction product of a polyisocyanate, a polyether polyol and a polyol containing an ionic or potentially ionic group.
Claim 16
Dependent Claim
34 words
The substrate of claim 13 wherein said prepolymer contains about 10 to about 150 milliequivalents of ionic groups/100 gram, and said polyol containing an ionic or potentially ionic group is a dihydroxy alkanoic acid.
Claim 17
Dependent Claim
28 words
The substrate of claim 12 wherein said prepolymer is the reaction product of a polyisocyanate, a polyester polyol and a polyol containing an ionic or potentially ionic group.
Claim 18
Dependent Claim
13 words
A static dissipative polyurethane-urea polymer prepared by coagulating the dispersion of claim 1.
Claim 19
Dependent Claim
13 words
A static dissipative polyurethane-urea polymer prepared by coagulating the dispersion of claim 4.
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) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |