US3873484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latex of quaternized polyether-dialkanolamine polyisocyanate prepolymer chain extended with water with ethoxylated phenol, and cured products
Assignee: WHITCO CHEMICAL Corp
•
Filing: 1972-12-06
•
Granted: 1975-03-25
•
Expires: 1992-12-06
Abstract
Abstract Stable aqueous dispersions or latices prepared from a quaternized substantially linear isocyanate terminated polyetherurethane prepolymer, prepared by reacting a mixture of about one equivalent of an alkoxylated diol or triol and about one hydroxyl equivalent of an N-alkyl dialkanolamine with about four equivalents of a diisocyanate; substantially 0.5 equivalents of a dialkyl sulfate is used to quaternize, said prepolymer is chain extended into the corresponding urea and at the same time dispersed with water in the presence of a nonionic emulsifier of the alkoxylated long chain alkyl phenol type having an HLB of about 14-16. Up to about 20% w/w of an inert substantially dry, organic solvent, such as acetone, may be used in the preparation of the quaternized polyetherurethane prepolymer, which is largely or completely replaced with water to yield a substantially aqueous stable dispersion of quaternized polyetherurethane-urea, having a pH of about 2.0-3.0. Substantially odor-free films and adhesives having improved solvent resistance and physical and mechanical properties are made from the present aqueous dispersions or latices.
Inventors
- 👤 Claire Bluestein
- 👤 Peter Loewrigkeit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:35
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814; C08G18/10; C08G18/12; Y; Y10; Y10S; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
141 words
A STORAGE LATEX OF A QUATERNIZED SUBSTANTIALLY LINEAR POLYETHERURETHANE-UREA. COMPRISING THE REACTION PRODUCT OF A MIXTURE OF A POLYOXYALKYLENE POLYOL AND AN N-LOWER ALKYL DIALKLANOLAMINE, SAID POLYOXYALKYLENE POLYOL BEING SELECTED FROM DIOLS, TRIOLS, AND MIXTURES THEREOF HAVING A HYDROXYL NUMBER IN THE RANGE OF ABOUT 10-200, WITH EXCESS DIISOCYANATE, QUATERNIZED WITH A DI-LOWER ALKYL SULFATE, AND CHAIN EXTENDING THE RESULTANT QUATERNIZED ISOCYANATE TERMINATED POLYETHERURETHANE WITH WATER, AND DISPERSING THE RESULTANT QUATERNIZED SUBSTANTIALLY LINEAR POLYETHERURETHANE-UREA IN WATER, IN THE PRESENCE OF FROM ABOUT 0.5 TO 5.0%, BASED ON THE QUATERNIZED POLYETHERURETHANE, OF AN ETHOXYLATED LONG CHAIN ALKYL PHENOL SURFACTANT, HAVING AN HLB OF ABOUT 14-16, SAID QUATERNIZED SUBSTANTIALLY LINEAR ISOCYANATE TERMINATED POLYETHERURETHANE COMPRISING A PROPORTION OF EQUIVALENTS IN RANGES OF ABOUT 0.8-1.2:0.8-1.2:3-5:0.4-0.6 OF SAID POLYOXYPROPYLENE POLYOL, N-ALKYL DIALKANOLAMINE, DIISOCYANATE AND DIALKYL SULFATE, RESPECTIVELY, THE EQUIVALENCY OF THE DIALKANOLAMINE BEING THE HYDROXYL EQUIVALENCY.
Claim 2
Dependent Claim
141 words
A STORAGE LATEX OF A QUATERNIZED SUBSTANTIALLY LINEAR POLYETHERURETHANE-UREA. COMPRISING THE REACTION PRODUCT OF A MIXTURE OF A POLYOXYALKYLENE POLYOL AND AN N-LOWER ALKYL DIALKLANOLAMINE, SAID POLYOXYALKYLENE POLYOL BEING SELECTED FROM DIOLS, TRIOLS, AND MIXTURES THEREOF HAVING A HYDROXYL NUMBER IN THE RANGE OF ABOUT 10-200, WITH EXCESS DIISOCYANATE, QUATERNIZED WITH A DI-LOWER ALKYL SULFATE, AND CHAIN EXTENDING THE RESULTANT QUATERNIZED ISOCYANATE TERMINATED POLYETHERURETHANE WITH WATER, AND DISPERSING THE RESULTANT QUATERNIZED SUBSTANTIALLY LINEAR POLYETHERURETHANE-UREA IN WATER, IN THE PRESENCE OF FROM ABOUT 0.5 TO 5.0%, BASED ON THE QUATERNIZED POLYETHERURETHANE, OF AN ETHOXYLATED LONG CHAIN ALKYL PHENOL SURFACTANT, HAVING AN HLB OF ABOUT 14-16, SAID QUATERNIZED SUBSTANTIALLY LINEAR ISOCYANATE TERMINATED POLYETHERURETHANE COMPRISING A PROPORTION OF EQUIVALENTS IN RANGES OF ABOUT 0.8-1.2:0.8-1.2:3-5:0.4-0.6 OF SAID POLYOXYPROPYLENE POLYOL, N-ALKYL DIALKANOLAMINE, DIISOCYANATE AND DIALKYL SULFATE, RESPECTIVELY, THE EQUIVALENCY OF THE DIALKANOLAMINE BEING THE HYDROXYL EQUIVALENCY.
Claim 3
Dependent Claim
20 words
A latex as in claim 1, wherein the proportion of equivalents of said isocyanate terminated polyetherurethane is about 1:1:4: 0.5.
Claim 4
Dependent Claim
12 words
A latex as in claim 1, wherein the diisocyanate is tolylene diisocyanate.
Claim 5
Dependent Claim
12 words
A latex as in claim 1, wherein the diisocyanate is 4,4''-dicyclohexylmethyl diisocyanate.
Claim 6
Dependent Claim
21 words
A latex as in claim 1, wherein the polyoxyalkylene polyol is a polyoxypropylene glycol having a hydroxyl number of about 20-80.
Claim 7
Dependent Claim
21 words
A latex as in claim 1, wherein the polyoxyalkylene polyol is a polyoxypropylene glycerol having a hydroxyl number of about 20-80.
Claim 8
Dependent Claim
14 words
A latex as in claim 1, wherein the N-lower alkyl dialkanolamine is N-methyl diethanolamine.
Claim 9
Dependent Claim
13 words
A latex as in claim 1, wherein the quaternizing agent is dimethyl sulfate.
Claim 10
Dependent Claim
27 words
A latex as in claim 1, wherein the quaternary polyetherurethane is prepared in an organic solvent, and said organic solvent is substantially removed after dispersing in water.
Claim 11
Dependent Claim
22 words
A latex as in claim 9, wherein up to 20 weight percent of organic solvent is employed based on the quaternary polyetherurethane.
Claim 12
Dependent Claim
11 words
A latex as in claim 9, wherein the solvent is acetone.
Claim 13
Dependent Claim
19 words
A latex as in claim 1, wherein a thickening agent is added to said dispersion to increase the viscosity.
Claim 14
Dependent Claim
10 words
The film produced by drying the latex of claim 1.
Claim 15
Dependent Claim
10 words
The adhesive produced by drying the latex of claim 1.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |