US3928271A
Expired / Lapsed
US
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Process for preparation of anionic polyurethane emulsions
Assignee: Kao Corp
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Filing: 1974-09-13
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Granted: 1975-12-23
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Expires: 1994-09-13
Abstract
Abstract A process for the preparation of anionic polyurethane emulsions comprising chain-extending a urethane prepolymer having isocyanate groups at the ends of the molecule with a polyalkylene polyamine having at least two primary or secondary amino groups and a functional group having the formula -CH2-CH(OH)-CH2X wherein X is Cl or Br, to form a polyurethane-urea-polyamine, reacting the polyurethane-urea-polyamine with a cyclic dicarboxylic acid anhydride and mixing that reaction product with an aqueous solution of a basic substance to form a polyurethane emulsion.
Inventors
- 👤 Kazuo Matsuda
- 👤 Hidemasa Ohmura
- 👤 Hirakazu Aritaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:29
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/07; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0823; C08G18/10; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
10 words
A PROCESS FOR PREPARING AN ANIONIC POLYURETHANE EMULSION, WHICH COMPRISES,
Claim 2
Dependent Claim
10 words
A PROCESS FOR PREPARING AN ANIONIC POLYURETHANE EMULSION, WHICH COMPRISES,
Claim 3
Dependent Claim
124 words
REACTING, IN THE LIQUID PHASE AND IN A KETONE SOLVENT, AT A TEMPERATURE OF FROM-20* TO +70*C, (A) ISOCYANATE-TERMINATED URETHANE PREPOLYMER PREPARED BY REACTING ORGANIC POLYOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM 200 TO 10000 WITH AN EXCESS OF ORGANIC POLYISOCYANATE, WITH (B) AN EXCESS OF POLYALKYLENE POLYAMINE HAV- ING AT LEAST TWO PRIMARY OR SECONDARY AMINO GROUPS AND ALSO HAVING A FUNCTIONAL GROUP OF THE FORMULA -CH2CH(OH)-CH2X, WHEREIN X IS CHLORO OR BROMO, THE TOTAL MOLE NUMBER OF PRIMARY AND SECONDARY AMINO GROUPS IN THE POLYALYLENE POLYAMINE BEING GREATER THAN THE TOTAL MOLE NUMBER OF ISOCYANATE GROUPS IN THE ISOCYANATE-TERMINATED URETHANE PREPOLYMER, THE REACTION BEING CARRIED OUT UNTIL THE PRESENCE OF -NCO GROUPS CANNOT BE DETECTED, WHEREBY TO FORM POLYURETHANE-UREA-POLYAMINE,
Claim 4
Dependent Claim
124 words
REACTING, IN THE LIQUID PHASE AND IN A KETONE SOLVENT, AT A TEMPERATURE OF FROM-20* TO +70*C, (A) ISOCYANATE-TERMINATED URETHANE PREPOLYMER PREPARED BY REACTING ORGANIC POLYOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM 200 TO 10000 WITH AN EXCESS OF ORGANIC POLYISOCYANATE, WITH (B) AN EXCESS OF POLYALKYLENE POLYAMINE HAV- ING AT LEAST TWO PRIMARY OR SECONDARY AMINO GROUPS AND ALSO HAVING A FUNCTIONAL GROUP OF THE FORMULA -CH2CH(OH)-CH2X, WHEREIN X IS CHLORO OR BROMO, THE TOTAL MOLE NUMBER OF PRIMARY AND SECONDARY AMINO GROUPS IN THE POLYALYLENE POLYAMINE BEING GREATER THAN THE TOTAL MOLE NUMBER OF ISOCYANATE GROUPS IN THE ISOCYANATE-TERMINATED URETHANE PREPOLYMER, THE REACTION BEING CARRIED OUT UNTIL THE PRESENCE OF -NCO GROUPS CANNOT BE DETECTED, WHEREBY TO FORM POLYURETHANE-UREA-POLYAMINE,
Claim 5
Dependent Claim
42 words
REACTING, IN THE LIQUID PHASE, AT A TEMPERATURE OF FROM 5* TO 70*C, FOR FROM 0.5 TO 2 HOURS, THE REACTION PRODUCT OF STEP 1 WITH CYCLIC DICARBOXYLIC ACID ANHYDRIDE IN AN AMOUNT SUBSTANTIALLY EQUIMOLAR TO THE AMINO GROUPS OF THE POLYURETHANE-UREA-POLYAMINE.
Claim 6
Dependent Claim
42 words
REACTING, IN THE LIQUID PHASE, AT A TEMPERATURE OF FROM 5* TO 70*C, FOR FROM 0.5 TO 2 HOURS, THE REACTION PRODUCT OF STEP 1 WITH CYCLIC DICARBOXYLIC ACID ANHYDRIDE IN AN AMOUNT SUBSTANTIALLY EQUIMOLAR TO THE AMINO GROUPS OF THE POLYURETHANE-UREA-POLYAMINE.
Claim 7
Dependent Claim
42 words
reacting, in the liquid phase, at a temperature of from 5* to 70*C, for from 0.5 to 2 hours, the reaction product of step 1 with cyclic dicarboxylic acid anhydride in an amount substantially equimolar to the amino groups of the polyurethane-urea-polyamine,
Claim 8
Dependent Claim
42 words
reacting, in the liquid phase, at a temperature of from 5* to 70*C, for from 0.5 to 2 hours, the reaction product of step 1 with cyclic dicarboxylic acid anhydride in an amount substantially equimolar to the amino groups of the polyurethane-urea-polyamine,
Claim 9
Dependent Claim
31 words
A process according to claim 1, in which the reactant (B) includes up to 50 percent, by molecular equivalent, of diamines or alkyleneoxide adducts, acrylonitrile adducts or acrylate adducts of diamines.
Claim 10
Dependent Claim
52 words
A process according to claim 1, in which the ratio of (b) the total mole number of amino groups containing active hydrogen atoms in the polyalkylene polyamine, to (a) the total mole number of isocyanate groups in said urethane prepolymer is in the range of 1 < b/a < or = 5.
Claim 11
Dependent Claim
37 words
adding to the reaction product of step 2 an aqueous solution of a basic substance to adjust the pH of the product of step 2 to be in the range of about 6 to about 9, and
Claim 12
Dependent Claim
37 words
adding to the reaction product of step 2 an aqueous solution of a basic substance to adjust the pH of the product of step 2 to be in the range of about 6 to about 9, and
Claim 13
Dependent Claim
37 words
ADDING TO THE REACTION PRODUCT OF STEP 2 AN AQUEOUS SOLUTION OF A BASIC SUBSTANCE TO ADJUST THE PH OF THE PRODUCT OF STEP 2 TO BE IN THE RANGE OF ABOUT 6 TO ABOUT 9, AND
Claim 14
Dependent Claim
37 words
ADDING TO THE REACTION PRODUCT OF STEP 2 AN AQUEOUS SOLUTION OF A BASIC SUBSTANCE TO ADJUST THE PH OF THE PRODUCT OF STEP 2 TO BE IN THE RANGE OF ABOUT 6 TO ABOUT 9, AND
Claim 15
Dependent Claim
24 words
TREATING THE PRODUCT OF STEP 3 TO REMOVE THE ORGANIC SOLVENT THEREFROM AND THEREBY OBTAINING AN AQUEOUS ANIONIC POLYURETHANE EMULSION AS A FINAL PRODUCT.
Claim 16
Dependent Claim
24 words
TREATING THE PRODUCT OF STEP 3 TO REMOVE THE ORGANIC SOLVENT THEREFROM AND THEREBY OBTAINING AN AQUEOUS ANIONIC POLYURETHANE EMULSION AS A FINAL PRODUCT.
Claim 17
Dependent Claim
14 words
A process according to claim 1, in which the polyalkylene polyamine has the formula
Claim 18
Dependent Claim
24 words
treating the product of step 3 to remove the organic solvent therefrom and thereby obtaining an aqueous anionic polyurethane emulsion as a final product.
Claim 19
Dependent Claim
24 words
treating the product of step 3 to remove the organic solvent therefrom and thereby obtaining an aqueous anionic polyurethane emulsion as a final product.
Claim 20
Dependent Claim
35 words
A process according to claim 4, in which said polyalkylene polyamine is prepared by reacting, at from 10* to 80*C, for from 0.5 to 5 hours, epichlorohydrin or epibromohydrin with a polyamine having the formula
Claim 21
Dependent Claim
37 words
A process according to claim 1, in which said cyclic dicarboxylic acid anhydride is selected from the group consisting of maleic anhydride, succinic anhydride, phthalic anhydride, dihydrophthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, trimellitic anhydride and itaconic anhydride.
Claim 22
Dependent Claim
48 words
A process according to claim 1, in which said basic substance is selected from the group consisting of alkali metal hydroxides, carbonates and bicarbonates and water soluble amines of the formulas RNH2, R2NH and R3N wherein R is alkyl of 1 to 4 carbon atoms, hydroxyethyl or hydroxypropyl.
Claim 23
Dependent Claim
12 words
An aqueous anionic polyurethane emulsion prepared by the process of claim 1.
Claim 24
Dependent Claim
24 words
A polyurethane molded product prepared by forming the emulsion of claim 8 into a molded product and then heat-treating the product to effect cross-linking.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |