US4183834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionized rosin-based resinous mixtures as tackifiers for latex
Assignee: Sylvachem Corp
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Filing: 1978-12-11
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Granted: 1980-01-15
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Expires: 1998-12-11
Abstract
Abstract A resinous polyelectrolyte, especially suitable for use as a tackifier in latex adhesives, comprises an ionizable resinous mixture which is ionized with a volatile ionizing agent, said ionizable resinous mixture being the reaction product of a rosin, a carboxylic acid, and a C 1 -C 18 mono-alcohol, said ionizable resinous mixture having a softening point not substantially above about 125° C. and an acid number of between about 30 and 150, said reaction product comprising the carbocyclic nucleus of rosin having at least one carboxylic acid group and at least one carboxylic acid ester group of said mono-alcohol.
Inventors
- 👤 James M. Evans
- 👤 Walter W. Spangler, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:51
CPC Classifications
C; C09; C09F; C09F1/00; C09F1/04; C09J; C09J121/00; C09J121/02; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/26; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844; Y10T428/31855
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
93 words
A resinous polyelectrolyte dispersed in water comprising water and an ionizable resinous mixture which is ionized with a volatile ionizing agent, said ionizable resinous mixture being the reaction product of a rosin, a carboxylic acid, and a C 1 -C 18 mono-alcohol, said ionizable resinous mixture having a softening point not substantially above about 125° C. and an acid number of between about 30 and 150, said reaction product comprising the carbocylic nucleus of rosin having at least one carboxylic acid group and at least one carboxylic acid ester group of said monoalcohol.
Claim 2
Dependent Claim
93 words
A resinous polyelectrolyte dispersed in water comprising water and an ionizable resinous mixture which is ionized with a volatile ionizing agent, said ionizable resinous mixture being the reaction product of a rosin, a carboxylic acid, and a C 1 -C 18 mono-alcohol, said ionizable resinous mixture having a softening point not substantially above about 125° C. and an acid number of between about 30 and 150, said reaction product comprising the carbocylic nucleus of rosin having at least one carboxylic acid group and at least one carboxylic acid ester group of said monoalcohol.
Claim 3
Dependent Claim
22 words
The resinous polyelectrolyte of claim 1 wherein said rosin is selected from tall oil rosin, wood rosin, gum rosin, and mixtures thereof.
Claim 4
Dependent Claim
22 words
The resinous polyelectrolyte of claim 1 wherein said carboxylic acid is an α,β-ethylenically unsaturated acid grafted onto said carboxylic nucleus of rosin.
Claim 5
Dependent Claim
12 words
The resinous polyelectrolyte of claim 3 wherein said unsaturated acid is dibasic.
Claim 6
Dependent Claim
18 words
The resinous polyelectrolyte of claim 4 wherein said dibasic acid is maleic acid, maleic anhydride or fumaric acid.
Claim 7
Dependent Claim
14 words
The resinous polyelectrolyte of claim 1 wherein said ionizing agent is an amino-ionizing agent.
Claim 8
Dependent Claim
26 words
The resinous polyelectrolyte of claim 1 wherein said ionizable resinous mixture is further reacted with a cationizable compound, said ionizing agent is a cationic-forming ionizing agent.
Claim 9
Dependent Claim
16 words
The resinous polyelectrolyte of claim 1 wherein said mono-alcohol is a C 6 -C 10 mono-alcohol.
Claim 10
Dependent Claim
13 words
The resinous polyelectrolyte of claim 1 wherein said rosin is a polymerized rosin.
Claim 11
Dependent Claim
18 words
The resinous polyelectrolyte of claim 1 wherein said softening point is between about -25° C. and 125° C.
Claim 12
Dependent Claim
17 words
The resinous mixture of claim 10 wherein said softening point is between about 0° and 50° C.
Claim 13
Dependent Claim
28 words
The resinous polyelectrolyte of claim 1 wherein said ionizable resinous mixture is the reaction product of about 40-85% rosin, 5-20% carboxylic acid, 10-30% mono-alcohol, and optionally 0-10% polyol.
Claim 14
Dependent Claim
28 words
The resinous polyelectrolyte of claim 12 wherein said ionizable resinous mixture is the reaction product of about 65% rosin, 10% unsaturated dibasic acid, 20% mono-alcohol, and 5% glycol.
Claim 15
Dependent Claim
15 words
The resinous polyelectrolyte of claim 1 which is substantially devoid of surfactants for said rosin.
Claim 16
Dependent Claim
32 words
The resinous polyelectrolyte of claim 1 also containing dispersed in said water an adhesive latex wherein the weight ratio of said resinous polyelectrolyte to said latex is between about 0.15:1 to 3:1.
Claim 17
Dependent Claim
17 words
The resinous polyelectrolyte of claim 15 having a total solids content of between about 10% and 80%.
Claim 18
Dependent Claim
13 words
The resinous polyelectrolyte of claim 15 wherein said latex is thermoplastic or thermosetting.
Claim 19
Dependent Claim
32 words
The resinous polyelectrolyte of claim 1 wherein said carboxylic acid has a pK of between about 3 and 8, and said ionizing agent has a pKa of between about 3 and 12.
Claim 20
Dependent Claim
109 words
An improved aqueous latex adhesive composition of a latex elastomer and tackifier dispersed in water, the improvement comprising said tackifier being a resinous polyelectrolyte of an ionizable resinous mixture which is ionized with a volatile ionizing agent, said ionizable resinous mixture being the reaction product of a rosin, a carboxylic acid, and a C 1 -C 18 mono-alcohol, said ionizable resinous mixture having a softening point not substantially above about 125° C. and an acid number of between about 30 and 150, said reaction product comprising the carbocylic nucleus of rosin having at least one carboxylic acid group and at least one carboxylic acid ester group of said mono-alcohol.
Claim 21
Dependent Claim
109 words
An improved aqueous latex adhesive composition of a latex elastomer and tackifier dispersed in water, the improvement comprising said tackifier being a resinous polyelectrolyte of an ionizable resinous mixture which is ionized with a volatile ionizing agent, said ionizable resinous mixture being the reaction product of a rosin, a carboxylic acid, and a C 1 -C 18 mono-alcohol, said ionizable resinous mixture having a softening point not substantially above about 125° C. and an acid number of between about 30 and 150, said reaction product comprising the carbocylic nucleus of rosin having at least one carboxylic acid group and at least one carboxylic acid ester group of said mono-alcohol.
Claim 22
Dependent Claim
32 words
The adhesive composition of claim 19 wherein said carboxylic acid has a pK of between about 3 and 8, and said ionizing agent has a pKa of between about 3 and 12.
Claim 23
Dependent Claim
24 words
The adhesive composition of claim 20 wherein said pK is between about 4 and 6, and said pKa is between about 8 and 16.
Claim 24
Dependent Claim
12 words
A dried adhesive film of the latex adhesive composition of claim 19.
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) | 1983-01-14 | 1983-07-16 | 1984-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-14 | 1987-07-16 | 1988-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-14 | 1991-07-16 | 1992-01-15 | $7700.00 | Window Closed / Lapsed |