Patent US4714728A successfully refreshed from Google Patents.
US4714728A
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Aqueous dispersions of acidic ethylene interpolymers
Assignee: Dow Chemical Co
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Filing: 1986-07-18
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Granted: 1987-12-22
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Expires: 2006-07-18
Abstract
Abstract Aqueous dispersions useful in adhesive and coating applications, and a method of preparing the same. The dispersion contains (a) an ethylene interpolymer having an acid number of at least 117, a melt flow of at least 50, and comprising from 15 to 24 percent by weight of the interpolymer of interpolymerized ethylenically unsaturated carboxylic acid, such as acrylic or methacrylic acid, (b) from about 5 to about 2,000 parts by weight per 100 parts of the interpolymer of a rosin tackifier having an acid number of at least about 76 and being compatible and codispersible with the interpolymer, (c) water in an amount sufficient to provide a solids content of the dispersion of from about 10 to about 60 percent, and (d) water soluble alkali in an amount effective to neutralize from 20 to 130 percent of the acid groups in the interpolymer and the tackifier, to disperse at least 99 percent by weight of the interpolymer and the tackifier, and to provide a viscosity of the dispersion which is less than about 1,500 Pa-s. The dispersion is prepared by heating and agitating a mixture of the ingredients sufficiently to disperse at least about 99 weight percent of the interpolymer and the tackifier.
Inventors
- 👤 Stephen L. Graham
- 👤 David O. Plunkett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:27
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/44; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
164 words
An aqueous dispersion, consisting essentially of: (a) an ethylene interpolymer having an acid number of at least about 117, a melt flow of at least about 50, and comprising from 15 to 24 percent, by weight of said interpolymer, of interpolymerized ethylenically unsaturated carboxylic acid; (b) from about 5 to about 2000 parts by weight per 100 parts of said interpolymer of a rosin tackifier having an acid number of at least about 76 and a melt flow of at least 50, said tackifier being compatible and codispersible with said interpolymer; (c) water in an amount sufficient to provide a solids content of the dispersion of from about 10 to about 60 percent; and (d) water soluble alkali in an amount effective to obtain a degree of neutralization of from about 20 to about 130 percent, to disperse at least 99 weight percent of said interpolymer and said tackifier, and to provide a viscosity of the dispersion which is less than about 1500 Pa-s.
Claim 2
Dependent Claim
164 words
An aqueous dispersion, consisting essentially of: (a) an ethylene interpolymer having an acid number of at least about 117, a melt flow of at least about 50, and comprising from 15 to 24 percent, by weight of said interpolymer, of interpolymerized ethylenically unsaturated carboxylic acid; (b) from about 5 to about 2000 parts by weight per 100 parts of said interpolymer of a rosin tackifier having an acid number of at least about 76 and a melt flow of at least 50, said tackifier being compatible and codispersible with said interpolymer; (c) water in an amount sufficient to provide a solids content of the dispersion of from about 10 to about 60 percent; and (d) water soluble alkali in an amount effective to obtain a degree of neutralization of from about 20 to about 130 percent, to disperse at least 99 weight percent of said interpolymer and said tackifier, and to provide a viscosity of the dispersion which is less than about 1500 Pa-s.
Claim 3
Dependent Claim
18 words
The dispersion of claim 1, wherein said interpolymer has a melt flow of from 150 to about 10,000.
Claim 4
Dependent Claim
36 words
The dispersion of claim 1, wherein said interpolymer has an acid number from about 117 to about 176 and comprises from 17 to 22 percent, by weight of said interpolymer, of said ethylenically unsaturated carboxylic acid.
Claim 5
Dependent Claim
38 words
The dispersion of claim 1, wherein said ethylenically unsaturated carboxylic acid is selected from the group consisting of: acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, isocrotonic acid, vinyl acetic acid, maleic acid, fumaric acid and combinations thereof.
Claim 6
Dependent Claim
29 words
The dispersion of claim 1, wherein said tackifier is present in an amount of from about 10 to about 240 parts by weight per 100 parts of said interpolymer.
Claim 7
Dependent Claim
19 words
The dispersion of claim 1, wherein said tackifier has an acid number of from about 90 to about 170.
Claim 8
Dependent Claim
18 words
The dispersion of claim 1, wherein at least 90 percent of said water soluble alkali is volatile alkali.
Claim 9
Dependent Claim
51 words
The dispersion of claim 1, wherein said melt flow of said interpolymer depends on said solids content according to the formulae: for F≧20,MF>50; for F≧25,MF>150; for F≧30,MF>600; and for F≧35,MF>1000; wherein F is the solids content of the dispersion in percent and MF is the melt flow of the ethylene interpolymer.
Claim 10
Dependent Claim
57 words
The dispersion of claim 8, wherein said alkali is present in an amount effective to obtain a degree of neutralization according to the formulae: for 20≦F≦25,(87-6.4(F-20))≦A≦(128-8.6(F-20)); for 25≦F≦30,(55-4.0(F-25))≦A≦(85-6.6(F-25)); for 30≦F≦35,(35-1.6(F-30))≦A≦(52-3.6(F-30)); for 35≦F≦40, 27≦A≦(34-0.8(F-35)); and for F≧40, 27≦A≦30; wherein F is the solids content of the dispersion in percent and A is the degree of neutralization in percent.
Claim 11
Dependent Claim
14 words
The dispersion of claim 1, wherein said viscosity is less than about 750 Pa-s.
Claim 12
Dependent Claim
204 words
An aqueous dispersion, consisting essentially of: (a) an ethylene interpolymer having a melt flow of from 150 to 10,000, an acid number from about 117 to about 176, and comprising from 17 to 22 percent, by weight of said interpolymer, of an interpolymerized ethylencially unsaturated carboxylic acid selected from the group consisting of: acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, isocrotonic acid, vinyl acetic acid, maleic acid, fumaric acid and combinations thereof; (b) from about 5 to about 2000 parts by weight per 100 parts of said interpolymer of a rosin tackifier having an acid number from about 90 to about 170, said tackifier being compatible and codispersible with said interpolymer; (c) water in an amount sufficient to provide a solids content of the dispersion of from about 20 to about 40 percent; and (d) a volatile water soluble alkali in an amount effective to obtain a degree of neutralization according to the formulae: for 20≦F≦25,(87-6.4(F-20))≦A≦(128-8.6(F-20)); for 25≦F≦30,(55-4.0(F-25))≦A≦(85-6.6(F-25)); for 30≦F≦35,(35-1.6(F-30))≦A≦(52-3.6(F-30)); and for 35≦F≦40, 27≦A≦(34-0.8(F-35)); wherein F is the solids content of the dispersion in percent and A is the degree of neutralization in percent, said amount of said alkali being effective to provide a dispersion having a viscosity less than about 1500 Pa-s.
Claim 13
Dependent Claim
204 words
An aqueous dispersion, consisting essentially of: (a) an ethylene interpolymer having a melt flow of from 150 to 10,000, an acid number from about 117 to about 176, and comprising from 17 to 22 percent, by weight of said interpolymer, of an interpolymerized ethylencially unsaturated carboxylic acid selected from the group consisting of: acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, isocrotonic acid, vinyl acetic acid, maleic acid, fumaric acid and combinations thereof; (b) from about 5 to about 2000 parts by weight per 100 parts of said interpolymer of a rosin tackifier having an acid number from about 90 to about 170, said tackifier being compatible and codispersible with said interpolymer; (c) water in an amount sufficient to provide a solids content of the dispersion of from about 20 to about 40 percent; and (d) a volatile water soluble alkali in an amount effective to obtain a degree of neutralization according to the formulae: for 20≦F≦25,(87-6.4(F-20))≦A≦(128-8.6(F-20)); for 25≦F≦30,(55-4.0(F-25))≦A≦(85-6.6(F-25)); for 30≦F≦35,(35-1.6(F-30))≦A≦(52-3.6(F-30)); and for 35≦F≦40, 27≦A≦(34-0.8(F-35)); wherein F is the solids content of the dispersion in percent and A is the degree of neutralization in percent, said amount of said alkali being effective to provide a dispersion having a viscosity less than about 1500 Pa-s.
Claim 14
Dependent Claim
14 words
The dispersion of claim 11, wherein said ethylenically unsaturated carboxylic acid is acrylic acid.
Claim 15
Dependent Claim
14 words
The dispersion of claim 11, wherein said ethylenically unsaturated carboxylic acid is methacrylic acid.
Claim 16
Dependent Claim
17 words
The dispersion of claim 11, wherein said interpolymer has a melt flow of from 200 to 3500.
Claim 17
Dependent Claim
37 words
The dispersion of claim 11, wherein said melt flow of said interpolymer depends on said solids content according to the formulae: for F≧25,MF>150; for F≧30,MF>600; and for F≧35,MF>1000; wherein MF is the melt flow of the interpolymer.
Claim 18
Dependent Claim
29 words
The dispersion of claim 11, wherein said tackifier is present in an amount of from about 10 to about 240 parts by weight per 100 parts of said interpolymer.
Claim 19
Dependent Claim
11 words
The dispersion of claim 11, wherein said alkali is ammonium hydroxide.
Claim 20
Dependent Claim
14 words
The dispersion of claim 11, wherein said viscosity is less than about 750 Pa-s.
Claim 21
Dependent Claim
17 words
The dispersion of claim 11, wherein said tackifier has a melt flow of at least about 500.
Claim 22
Dependent Claim
214 words
An aqueous dispersion, comprising: (a) an ethylene interpolymer having a melt flow of from 200 to 3500, an acid number from about 117 to about 176, and comprising from 17 to 22 percent, by weight of said interpolymer, of interpolymerized acid selected from acrylic acid and methacrylic acid; (b) from about 10 to about 240 parts by weight per 100 parts of said interpolymer of a rosin tackifier having an acid number from about 90 to about 170 and a melt flow of at least about 500, said tackifier being compatible and codispersible with said interpolymer; (c) water in an amount sufficient to provide a solids content of the dispersion of from about 20 to about 40 percent, said melt flow of said interpolymer depending on said solids content according to the formulae: for F≧25,MF>150; for F≧30,MF>600; and for F≧35,MF>1000; wherein F is the solids content in percent and MF is the melt flow of the interpolymer; and (d) ammonium hydroxide in an amount effective to obtain a degree of neutralization according to the formulae: for 20≦F≦25,(87-6.4(F-20))≦A≦(128-8.6(F-20)); for 25≦F≦30,(55-4.0(F-25))≦A≦(85-6.6(F-25)); for 30≦F≦35,(35-1.6(F-30))≦A≦(52-3.6(F-30)); and for 35≦F≦40, 27≦A≦(34-0.8(F-35)); wherein A is the degree of neutralization in percent, said amount of said ammonium hydroxide being effective to provide a dispersion having a viscosity less than about 750 Pa-s.
Claim 23
Dependent Claim
214 words
An aqueous dispersion, comprising: (a) an ethylene interpolymer having a melt flow of from 200 to 3500, an acid number from about 117 to about 176, and comprising from 17 to 22 percent, by weight of said interpolymer, of interpolymerized acid selected from acrylic acid and methacrylic acid; (b) from about 10 to about 240 parts by weight per 100 parts of said interpolymer of a rosin tackifier having an acid number from about 90 to about 170 and a melt flow of at least about 500, said tackifier being compatible and codispersible with said interpolymer; (c) water in an amount sufficient to provide a solids content of the dispersion of from about 20 to about 40 percent, said melt flow of said interpolymer depending on said solids content according to the formulae: for F≧25,MF>150; for F≧30,MF>600; and for F≧35,MF>1000; wherein F is the solids content in percent and MF is the melt flow of the interpolymer; and (d) ammonium hydroxide in an amount effective to obtain a degree of neutralization according to the formulae: for 20≦F≦25,(87-6.4(F-20))≦A≦(128-8.6(F-20)); for 25≦F≦30,(55-4.0(F-25))≦A≦(85-6.6(F-25)); for 30≦F≦35,(35-1.6(F-30))≦A≦(52-3.6(F-30)); and for 35≦F≦40, 27≦A≦(34-0.8(F-35)); wherein A is the degree of neutralization in percent, said amount of said ammonium hydroxide being effective to provide a dispersion having a viscosity less than about 750 Pa-s.
Claim 24
Independent Claim
169 words
A method of preparing an aqueous dispersion, comprising the steps of: (a) mixing components consisting essentially of: (i) an ethylene interpolymer having an acid number of at least about 117, a melt flow of at least about 80, and comprising from 15 to 24 percent, by weight of said interpolymer, of interpolymerized ethylenically unsaturated carboxylic acid; (ii) from about 5 to about 2000 parts by weight per 100 parts of said interpolymer of a rosin tackifier having an acid number of at least about 76 and a melt flow of at least 50, said tackifier being compatible and codispersible with said interpolymer; (iii) water in an amount sufficient to provide a solids content of the mixture of from about 10 to about 60 percent; and (iv) water soluble alkali in an amount effective to obtain a degree of neutralization of from about 20 to about 130 percent; and (b) heating and agitating said mixture sufficiently to disperse therein at least 99 weight percent of said interpolymer and said tackifier.
Claim 25
Independent Claim
169 words
A method of preparing an aqueous dispersion, comprising the steps of: (a) mixing components consisting essentially of: (i) an ethylene interpolymer having an acid number of at least about 117, a melt flow of at least about 80, and comprising from 15 to 24 percent, by weight of said interpolymer, of interpolymerized ethylenically unsaturated carboxylic acid; (ii) from about 5 to about 2000 parts by weight per 100 parts of said interpolymer of a rosin tackifier having an acid number of at least about 76 and a melt flow of at least 50, said tackifier being compatible and codispersible with said interpolymer; (iii) water in an amount sufficient to provide a solids content of the mixture of from about 10 to about 60 percent; and (iv) water soluble alkali in an amount effective to obtain a degree of neutralization of from about 20 to about 130 percent; and (b) heating and agitating said mixture sufficiently to disperse therein at least 99 weight percent of said interpolymer and said tackifier.
Claim 26
Dependent Claim
18 words
The method of claim 21, wherein said interpolymer has a melt flow of from 150 to about 10,000.
Claim 27
Dependent Claim
36 words
The method of claim 21, wherein said interpolymer has an acid number from about 117 to about 176 and comprises from 17 to 22 percent, by weight of said interpolymer, of said ethylenically unsaturated carboxylic acid.
Claim 28
Dependent Claim
38 words
The method of claim 21, wherein said ethylenically unsaturated carboxylic acid is selected from the group consisting of: acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, isocrotonic acid, vinyl acetic acid, maleic acid, fumaric acid and combinations thereof.
Claim 29
Dependent Claim
29 words
The method of claim 21, wherein said tackifier is mixed in an amount of from about 10 to about 240 parts by weight per 100 parts of said interpolymer.
Claim 30
Dependent Claim
19 words
The method of claim 21, wherein said tackifier has an acid number of from about 90 to about 170.
Claim 31
Dependent Claim
18 words
The method of claim 21, wherein at least 90 percent of said water soluble alkali is volatile alkali.
Claim 32
Dependent Claim
51 words
The method of claim 21, wherein said melt flow of said interpolymer depends on said solids content according to the formulae: for F≧20,MF>50; for F≧25,MF>150; for F≧30,MF>600; and for F≧35,MF>1000; wherein F is the solids content of the dispersion in percent and MF is the melt flow of the ethylene interpolymer.
Claim 33
Dependent Claim
57 words
The method of claim 28, wherein said alkali is mixed in an amount effective to obtain a degree of neutralization according to the formulae: for 20≦F≦25,(87-6.4(F-20))≦A≦(128-8.6(F-20)); for 25≦F≦30,(55-4.0(F-25))≦A≦(85-6.6(F-25)); for 30≦F≦35,(35-1.6(F-30))≦A≦(52-3.6(F-30)); for 35≦F≦40, 27≦A≦(34-0.8(F-35)); and for F≦40, 27≦A≦30; wherein F is the solids content of the mixture in percent and A is the degree of neutralization in percent.
Claim 34
Dependent Claim
14 words
The method of claim 21, wherein said viscosity is less than about 750 Pa-s.
Claim 35
Dependent Claim
21 words
The method of claim 21, wherein said heating is at a temperature of from about 80° C. to about 105° C.
Claim 36
Dependent Claim
20 words
The method of claim 21, wherein at least about 99.7 weight percent of said interpolymer and said tackifier is dispersed.
Claim 37
Dependent Claim
24 words
The method of claim 21, wherein said interpolymer and said tackifier are melt-blended together prior to said mixing with said water and said alkali.
Claim 38
Independent Claim
256 words
A method of preparing an aqueous dispersion, comprising the steps of: (a) melt-blending: (i) an ethylene interpolymer having a melt flow of from 200 to 3500, an acid number from about 117 to about 176, and comprising from 17 to 22 percent, by weight of said interpolymer, of interpolymerized ethylenically unsaturated carboxylic acid selected from the group consisting of: acrylic acid, methacrylic acid and combinations thereof; with (ii) from about 10 to about 240 parts by weight per 100 parts of said interpolymer of a rosin tackifier having an acid number from about 90 to about 170 and a melt flow of at least 500, said tackifier being compatible and codispersible with said interpolymer; (b) mixing: (i) said melt blend; (ii) water in an amount sufficient to provide a solids content of the mixture of from about 20 to about 40 percent; and (iii) ammonium hydroxide in an amount effective to obtain a degree of neutralization according to the formulae: for 20≦F≦25, (87-6.4(F-20))≦A≦(128-8.6(F-20)); for 25≦F≦30, (55-4.0(F-25))≦A≦(85-6.6(F-25)); for 30≦F≦35, (35-1.6(F-30))≦A≦(52-3.6(F-30)); and for 35≦F≦40, 27≦A≦(34-0.8(F-35)); wherein F is the solids content of the dispersion and A is the degree of neutralization in percent, said amount of said ammonium hydroxide being effective to provide a dispersion having a viscosity less than about 750 Pa-s; and (c) heating to a temperature of from about 80° C. to about 105° C. and agitating said mixture sufficiently to disperse at least about 99.7 weight percent of said interpolymer and said tackifier, thereby producing an aqueous dispersion of said interpolymer and said tackifier.
Claim 39
Independent Claim
256 words
A method of preparing an aqueous dispersion, comprising the steps of: (a) melt-blending: (i) an ethylene interpolymer having a melt flow of from 200 to 3500, an acid number from about 117 to about 176, and comprising from 17 to 22 percent, by weight of said interpolymer, of interpolymerized ethylenically unsaturated carboxylic acid selected from the group consisting of: acrylic acid, methacrylic acid and combinations thereof; with (ii) from about 10 to about 240 parts by weight per 100 parts of said interpolymer of a rosin tackifier having an acid number from about 90 to about 170 and a melt flow of at least 500, said tackifier being compatible and codispersible with said interpolymer; (b) mixing: (i) said melt blend; (ii) water in an amount sufficient to provide a solids content of the mixture of from about 20 to about 40 percent; and (iii) ammonium hydroxide in an amount effective to obtain a degree of neutralization according to the formulae: for 20≦F≦25, (87-6.4(F-20))≦A≦(128-8.6(F-20)); for 25≦F≦30, (55-4.0(F-25))≦A≦(85-6.6(F-25)); for 30≦F≦35, (35-1.6(F-30))≦A≦(52-3.6(F-30)); and for 35≦F≦40, 27≦A≦(34-0.8(F-35)); wherein F is the solids content of the dispersion and A is the degree of neutralization in percent, said amount of said ammonium hydroxide being effective to provide a dispersion having a viscosity less than about 750 Pa-s; and (c) heating to a temperature of from about 80° C. to about 105° C. and agitating said mixture sufficiently to disperse at least about 99.7 weight percent of said interpolymer and said tackifier, thereby producing an aqueous dispersion of said interpolymer and said tackifier.
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