US5086110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous polyurethane dispersions
Assignee: Invista North America LLC
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Filing: 1989-10-06
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Granted: 1992-02-04
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Expires: 2009-10-06
Abstract
Abstract Waterborne polyurethane made using 1,12-dodecanediisocyanate, and prepolymers of such polyurethanes.
Inventors
- 👤 Han X. Xiao
- 👤 Shi Yang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:59
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/73; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0823; C08G18/10; C08G18/12; C08G18/28; C08G18/65; C08G18/66; C08G18/6625
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
A prepolymer made by reaction of (A) 1 equivalent of 1,12-dodecanediisocyanate with (B) total 0.6-0.8 equivalent of the following active hydrogen compounds: (a) alpha, alpha-dimethylolacetic acid or a homologue thereof, (b) a polymeric glycol selected from poly(oxyalkylene)glycols and polyester glycols having a weight average molecular weight of about 400-3000, and the amount of component (a) being about 0.08-0.25 hydroxyl equivalent per 100 g of total weight of all the reactants A and B.
Claim 2
Dependent Claim
73 words
A prepolymer made by reaction of (A) 1 equivalent of 1,12-dodecanediisocyanate with (B) total 0.6-0.8 equivalent of the following active hydrogen compounds: (a) alpha, alpha-dimethylolacetic acid or a homologue thereof, (b) a polymeric glycol selected from poly(oxyalkylene)glycols and polyester glycols having a weight average molecular weight of about 400-3000, and the amount of component (a) being about 0.08-0.25 hydroxyl equivalent per 100 g of total weight of all the reactants A and B.
Claim 3
Dependent Claim
139 words
A composition obtained by mixing an isocyanate-terminated, carboxyl group-containing prepolymer made by reaction of (A) 1 equivalent of 1,12-dodecanediisocyanate with (B) total 0.6-0.8 equivalent of the following active hydrogen compounds: (a) alpha, alpha-dimethylolacetic acid or a homologue thereof, (b) a polymeric glycol selected from poly(oxyalkylene)glycols and polyester glycols having a weight average molecular weight of about 400-3000, and the amount of component (a) being about 0.08-0.25 hydroxyl equivalent per 100 g of total weight of all the reactants A and B, with an aqueous solution of a sufficient amount of a tertiary amine, to convert 50-100% of the carboxyl groups of the prepolymer to carboxylate ions, then chain-extending the prepolymer by reacting the remaining isocyanate groups with about a stoichiometric amount based on free isocyanate groups of a diamine having at least one hydrogen attached to each nitrogen atom.
Claim 4
Dependent Claim
139 words
A composition obtained by mixing an isocyanate-terminated, carboxyl group-containing prepolymer made by reaction of (A) 1 equivalent of 1,12-dodecanediisocyanate with (B) total 0.6-0.8 equivalent of the following active hydrogen compounds: (a) alpha, alpha-dimethylolacetic acid or a homologue thereof, (b) a polymeric glycol selected from poly(oxyalkylene)glycols and polyester glycols having a weight average molecular weight of about 400-3000, and the amount of component (a) being about 0.08-0.25 hydroxyl equivalent per 100 g of total weight of all the reactants A and B, with an aqueous solution of a sufficient amount of a tertiary amine, to convert 50-100% of the carboxyl groups of the prepolymer to carboxylate ions, then chain-extending the prepolymer by reacting the remaining isocyanate groups with about a stoichiometric amount based on free isocyanate groups of a diamine having at least one hydrogen attached to each nitrogen atom.
References Cited (Backward Citations)
US4183836A
Cited
US4590219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-03 | 1995-08-05 | 1996-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-03 | 1999-08-05 | 2000-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-03 | 2003-08-05 | 2004-02-04 | $7700.00 | Window Closed / Lapsed |