Patent US4200561A successfully refreshed from Google Patents.
US4200561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable, compatible thixotropic gel with copolymer gelling agent
Assignee: Honeywell International Inc
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Filing: 1978-07-17
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Granted: 1980-04-29
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Expires: 1998-07-17
Abstract
Abstract A stable, compatible thixotropic gel of the type gelled from a mixture including a solvent, a cosolvent and a gelling agent. The gelling agent comprises a copolymer of ethylene and at least one comonomer selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, esterified acrylic acid, vinyl acetate, vinyl formate, vinyl propionate and mixtures thereof. The copolymer has a number average molecular weight between about 500 and about 10,000.
Inventors
- 👤 Irving B. Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:22
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K47/00; A61K47/30; A61K47/32; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K8/18; A61K8/72; A61K8/81; A61K8/8141; A61K8/8147; A61K8/8152; A61K9/00; A61K9/0012; A61K9/0014; C; C09; C09D; C09D7/00; C09D7/40; C09D7/43; A61Q1/00; A61Q1/02; A61Q1/04; A61Q1/06; A61Q13/00; C08; C08L; C08L31/00; C08L31/02; C08L31/04; C08L33/00; C08L33/02; Y; Y10; Y10S; Y10S260/00; Y10S260/47
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
150 words
A stable, compatible thixotropic gel composition having in the oil phase between about 5 and about 60 weight % gellant, between about 5 and about 50 weight % of a solvent incompatible at room temperature with the gellant and between about 20 and about 90 mole % of a cosolvent compatible with both the gellant and the solvent, at least 25 weight % of said gellant being a copolymer having between about 40 and about 96 mole % ethylene monomer and between about 4 and about 60 mole % of a comonomer selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, esterified acrylic acid, vinyl acetate, vinyl formate, vinyl propionate and mixtures thereof, said copolymer having a number average molecular weight between about 500 and about 10,000, said copolymer being present in a proportion great enough to maintain said gel composition stable from 10° to 50° C.
Claim 2
Dependent Claim
150 words
A stable, compatible thixotropic gel composition having in the oil phase between about 5 and about 60 weight % gellant, between about 5 and about 50 weight % of a solvent incompatible at room temperature with the gellant and between about 20 and about 90 mole % of a cosolvent compatible with both the gellant and the solvent, at least 25 weight % of said gellant being a copolymer having between about 40 and about 96 mole % ethylene monomer and between about 4 and about 60 mole % of a comonomer selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, esterified acrylic acid, vinyl acetate, vinyl formate, vinyl propionate and mixtures thereof, said copolymer having a number average molecular weight between about 500 and about 10,000, said copolymer being present in a proportion great enough to maintain said gel composition stable from 10° to 50° C.
Claim 3
Dependent Claim
21 words
The gel composition of claim 1 wherein said copolymer has a number average molecular weight between about 1000 and about 5000.
Claim 4
Dependent Claim
21 words
The gel composition of claim 2 wherein said copolymer has a number average molecular weight between about 2000 and about 4000.
Claim 5
Dependent Claim
33 words
The gel composition of claim 2 wherein said copolymer is a copolymer of between about 5 and above 50 mole % vinyl acetate and between about 50 and about 95 mole % ethylene.
Claim 6
Dependent Claim
19 words
The gel composition of claim 2 wherein said copolymer has an acid number between about 30 and about 150.
Claim 7
Dependent Claim
12 words
The gel composition of claim 2 wherein said comonomer is vinyl acetate.
Claim 8
Dependent Claim
12 words
The gel composition of claim 2 wherein said comonomer is acrylic acid.
Claim 9
Dependent Claim
63 words
The gel composition of claim 1 wherein said cosolvent is selected from the group consisting of fatty alcohols of 6-20 carbons, fatty acids of 6-20 carbons, fatty esters formed from an alcohol of 1-12 carbons and an acid of 6-24 carbons, aliphatic hydrocarbons of 6-10 carbons, aromatic hydrocarbons of 6-10 carbon and mixtures thereof, said cosolvent having at most one olefinic double bond.
Claim 10
Dependent Claim
52 words
The gel composition of claim 1 wherein said cosolvent is selected from the group consisting of saturated fatty alcohols of 14-18 carbons, saturated fatty acids of 14-18 carbons, saturated fatty esters formed from an alcohol of 1-8 carbons and an acid of 14-18 carbons, aromatic hydrocarbons of 6-10 carbons and mixtures thereof.
Claim 11
Dependent Claim
32 words
The gel composition of claim 1 wherein the copolymer is a copolymer of about 86 mole % ethylene and 14 mole % vinyl acetate with a number average molecular weight about 3500.
Claim 12
Dependent Claim
30 words
The gel composition of claim 10 containing in the oil phase said copolymer, isopropyl myristate and silicone oil in proportions within the region bonded by line A in FIG. 1.
Claim 13
Dependent Claim
30 words
The gel composition of claim 10 containing in the oil phase said copolymer, isopropyl myristate and silicone oil in proportions within the region bounded by line C in FIG. 1.
Claim 14
Dependent Claim
30 words
The gel composition of claim 10 containing in the oil phase said copolymers, isopropyl myristate and silicone oil in proportions within the region bounded by line D in FIG. 2.
Claim 15
Dependent Claim
29 words
The gel composition of clim 10 containing the oil phase said copolymer, isopropyl myristate and silicone oil in proportions within the region bounded by line F in FIG. 2.
Claim 16
Dependent Claim
29 words
The gel composition of clim 10 containing the oil phase said copolymer, isopropyl myristate and silicone oil in proportions within the region bounded by line F in FIG. 2.
Claim 17
Dependent Claim
30 words
The gel composition of claim 10 containing in the oil phase said copolymer, butyl stearate and castor oil in proportions within the region bounded by line G in FIG. 3.
Claim 18
Dependent Claim
30 words
The gel composition of claim 10 containing in the oil phase said copolymer, butyl stearate and castor oil in proportions within the region bounded by line I in FIG. 3.
Claim 19
Dependent Claim
29 words
The gel composition of claim 10 containing in the oil phase said copolymer, butyl stearate and castor oil proportions within the region bounded by line J in FIG. 4.
Claim 20
Dependent Claim
29 words
The gel composition of claim 10 containing in the oil phase said copolymer, butyl stearate and castor oil proportions within the region bounded by line L in FIG. 4.
Claim 21
Dependent Claim
30 words
The gel composition of claim 10 containing in the oil phase said copolymer, isopropyl isosterate and triglycerol diisostearate in proportions within the region bounded by line M in FIG. 5.
Claim 22
Dependent Claim
30 words
The gel composition of claim 10 containing in the oil phase said copolymer, isopropyl isostearate and triglycerol diisostearate in proportions within the region bounded by line O in FIG. 5.
Claim 23
Dependent Claim
30 words
The gel composition of claim 10 containing in the oil phase said copolymer, isopropyl palmitate and castor oil in proportions within the region bounded by line P in FIG. 6.
Claim 24
Dependent Claim
30 words
The gel composition of claim 10 containing in the oil phase said copolymer, isopropyl palmitate and castor oil in proportions within the region bounded by line R in FIG. 6.
Claim 25
Dependent Claim
32 words
The gel composition of claim 1 wherein said copolymer is a copolymer of ethylene and said acrylic acid having an acid number about 40 and a number average molecular weight about 3000.
Claim 26
Dependent Claim
30 words
The gel composition of claim 23 having in the oil phase said copolymer, isostearyl alcohol and proplene glycol in proportions within the region bounded by line S in FIG. 7.
Claim 27
Dependent Claim
30 words
The gel composition of claim 23 having in the oil phase said copolymer, isostearyl alcohol and propylene glycol in proportions within the region bounded by line U in FIG. 7.
Claim 28
Dependent Claim
30 words
The gel composition of claim 23 having in the oil phase said copolymer, oleyl alcohol and propylene glycol in proportions within the region bounded by line V in FIG. 8.
Claim 29
Dependent Claim
30 words
The gel composition of claim 23 having in the oil phase said copolymer, oleyl alcohol and propylene glycol in proportions within the region bounded by line X in FIG. 8.
Claim 30
Dependent Claim
31 words
The gel composition of claim 1 wherein the copolymer is a copolymer of ethylene and acrylic acid having an acid number about 75 and a number average molecular weight about 3200.
Claim 31
Dependent Claim
30 words
The gel composition of claim 28 having in the oil phase said copolymer, oleyl alcohol and propylene glycol in proportions within the region bounded by line Y in FIG. 9.
Claim 32
Dependent Claim
30 words
The gel composition of claim 28 having in the oil phase said copolymer, oleyl alcohol and propylene glycol in proportions within the region bounded by line AA in FIG. 9.
Claim 33
Dependent Claim
30 words
The gel composition of claim 28 having in the oil phase said copolymer, isostearyl alcohol and propylene glycol in proportions within the region bounded by line BB in FIG. 10.
Claim 34
Dependent Claim
30 words
The gel composition of claim 28 having in the oil phase said copolymer, isostearyl alcohol and propylene glycol in proportions within the region bounded by line DD in FIG. 10.
Claim 35
Dependent Claim
31 words
The gel composition of claim 1 wherein said copolymer is a copolymer of ethylene and acrylic acid having an acid number about 120 and a number average molecular weight about 3500.
Claim 36
Dependent Claim
30 words
The gel composition of claim 33 having in the oil phase said copolymer, oleyl alcohol and propylene glycol in proportions within the region bounded by line EE in FIG. 11.
Claim 37
Dependent Claim
30 words
The gel composition of claim 33 having in the oil phase said copolymer, oleyl alcohol and propylene glycol in proportions within the region bounded by line GG in FIG. 11.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |