Patent US5256191A successfully refreshed from Google Patents.
US5256191A
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Correction fluid compositions
Assignee: Berol Corp
•
Filing: 1991-10-01
•
Granted: 1993-10-26
•
Expires: 2011-10-01
Abstract
Abstract Substantially non-toxic correction fluid compositions including an opacifying pigment dispersed in a solution of a solvent, a siloxane and a film-forming polymeric material.
Inventors
- 👤 John Thompson
- 👤 Kim H. Ng
- 👤 Edward J. Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:43
CPC Classifications
C; C09; C09D; C09D10/00
Claims Analysis
Total Claims: 64
Claim 1
Independent Claim
89 words
A correction fluid composition comprising an opacifying pigment dispersed in a solution of a film-forming polymeric material and a volatile organosiloxane in a volatile solvent and where the volume ratio of the organosiloxane and the solvent provide an organosiloxane solvent mixture in which the value of the (δ p+h ) of the mixture is greater than about 2.0 cal 1/2 cm -3/2 and less than about 7.35 cal 1/2 cm -3/2 and the higher value is not exceeded at least until about 90 percent of the mixture has evaporated.
Claim 2
Dependent Claim
89 words
A correction fluid composition comprising an opacifying pigment dispersed in a solution of a film-forming polymeric material and a volatile organosiloxane in a volatile solvent and where the volume ratio of the organosiloxane and the solvent provide an organosiloxane solvent mixture in which the value of the (δ p+h ) of the mixture is greater than about 2.0 cal 1/2 cm -3/2 and less than about 7.35 cal 1/2 cm -3/2 and the higher value is not exceeded at least until about 90 percent of the mixture has evaporated.
Claim 3
Dependent Claim
25 words
A correction fluid of claim 1 wherein said solvent has a (δ p+h ) value between 2.5 to about 12.4 cal 1/2 cm -3/2 .
Claim 4
Dependent Claim
25 words
A correction fluid of claim 1 where in said (δ p+h ) of said mixture is greater than about 2.3 cal 1/2 cm -3/2 .
Claim 5
Dependent Claim
53 words
A correction fluid composition of claim 3 wherein the values of the solubility parameter components of said mixture are greater than about 1.5 and less than about 3.6 cal 1/2 cm -3/2 for δ p and greater than about 1.8 and less than about 6.4 cal 1/2 cm -3/2 for δ h .
Claim 6
Dependent Claim
40 words
A correction fluid of claim 3 where the solvent has a solubility parameter between about 7.2 to about 14 cal 1/2 cm -3/2 and a (δ p+h ) value between about 3.5 to about 12.4 cal 1/2 cm -3/2 .
Claim 7
Dependent Claim
73 words
A correction fluid of claim 5 where the concentration of opacifying pigment is between about 30 to about 60 percent by weight of the total weight of the composition, the concentration of organosiloxane is between about 10 to about 40 percent by weight, the concentration of polymeric material is between about 3 to about 10 percent by weight and the concentration of solvent is between about 10 to about 30 percent by weight.
Claim 8
Dependent Claim
73 words
A correction fluid of claim 6 where the concentration of opacifying pigment is between about 45 to about 55 percent by weight of the total weight of the composition, the concentration of organosiloxane is between about 15 to about 35 percent by weight, the concentration of polymeric material is between about 5 to about 8 percent by weight and the concentration of solvent is between about 12 to about 25 percent by weight.
Claim 9
Dependent Claim
40 words
A correction fluid of claim 7 where the organosiloxane conforms to the following formulae: ##STR3## where each R is hydrogen or alkyl having from 1-3 carbon atoms, and m is 0, 1, or 2 and n is 4 or 5.
Claim 10
Dependent Claim
22 words
A correction fluid of claim 8 where the polymeric material is an acrylic polymer having a molecular weight between 50,000 and 500,000.
Claim 11
Dependent Claim
20 words
A correction fluid of claim 9 where the solvent is a volatile alcohol, ketone or ester or mixtures of these.
Claim 12
Dependent Claim
17 words
A correction fluid of claim 10 where the organosiloxane is hexamethyldisiloxane or octamethylcyclotetrasiloxane or mixtures of these.
Claim 13
Dependent Claim
21 words
A correction fluid of claim 11 where the polymeric material is methyl methacrylate, butyl methacrylate, isobutyl methacrylate or mixtures of these.
Claim 14
Dependent Claim
23 words
A correction fluid of claim 12 where the solvent is ethyl alcohol, isopropyl alcohol, methyl ethyl ketone, ethyl acetate or mixtures of these.
Claim 15
Dependent Claim
23 words
A correction fluid of claim 13 where the organosiloxane is hexamethyldisiloxane, the polymeric material is an isobutylmethacrylate and the solvent is isopropyl alcohol.
Claim 16
Dependent Claim
23 words
A correction fluid of claim 13 where the organosiloxane is octamethylcyclotetrasiloxane, the polymeric material is an isobutylmethacrylate and the solvent is isopropyl alcohol.
Claim 17
Dependent Claim
25 words
A correction fluid of claim 1 where the mixture of said solvent and said organosiloxane has a δ p value of greater than about 1.6.
Claim 18
Dependent Claim
12 words
A correction fluid of claim 16 where the solvent comprises a terpene.
Claim 19
Independent Claim
148 words
A method for producing a corrective coating on the surface of a substrate, said method comprising the steps of: a. providing a composition including an opacifying pigment dispersed in a solution of a film-forming polymeric material and a volatile organosiloxane in a volatile solvent and where the volume ratio of the organosiloxane and the solvent provide an organosiloxane solvent mixture in which the value of the (δ p+h ) of the mixture is greater than about 2.0 cal 1/2 cm -3/2 and less than about 7.35 cal 1/2 cm -3/2 and the higher value is not exceeded at least until about 90 percent of the mixture has evaporated, b. applying said composition to a marking on the surface of a substrate to cover said marking; c. allowing said volatile organosiloxane and said volatile solvent to evaporate to form a film comprising said film-forming polymeric material covering said marking.
Claim 20
Independent Claim
148 words
A method for producing a corrective coating on the surface of a substrate, said method comprising the steps of: a. providing a composition including an opacifying pigment dispersed in a solution of a film-forming polymeric material and a volatile organosiloxane in a volatile solvent and where the volume ratio of the organosiloxane and the solvent provide an organosiloxane solvent mixture in which the value of the (δ p+h ) of the mixture is greater than about 2.0 cal 1/2 cm -3/2 and less than about 7.35 cal 1/2 cm -3/2 and the higher value is not exceeded at least until about 90 percent of the mixture has evaporated, b. applying said composition to a marking on the surface of a substrate to cover said marking; c. allowing said volatile organosiloxane and said volatile solvent to evaporate to form a film comprising said film-forming polymeric material covering said marking.
Claim 21
Dependent Claim
26 words
The method of claim 18 wherein said solvent has a (δ p+h ) value of between about 2.5 to about 12.4 cal 1/2 cm -3/2 .
Claim 22
Dependent Claim
27 words
The method of claim 18 where in said composition provided said (δ p+h ) of said mixture is greater than about 2.3 cal 1/2 cm -3/2 .
Claim 23
Dependent Claim
55 words
The method of claim 20 where in said composition provided the values of the solubility parameter components of said mixture are greater than about 1.5 and less than about 3.6 cal 1/2 cm -3/2 for δ p and greater than about 1.8 and less than about 6.4 cal 1/2 cm -3/2 for δ h .
Claim 24
Dependent Claim
44 words
The method of claim 20 where in said composition provided said volatile solvent has a solubility parameter between about 7.2 to about 14 cal 1/2 cm -3/2 and a (δ p+h ) value between about 3.5 to about 12.4 cal 1/2 cm -3/2 .
Claim 25
Dependent Claim
76 words
The method of claim 20 where in said composition provided the concentration of opacifying pigment is between about 30 to about 60 percent by weight of the total weight of the composition, the concentration of organosiloxane is between about 10 to about 40 percent by weight, the concentration of polymeric material is between about 3 to about I0 percent by weight and the concentration of solvent is between about 10 to about 30 percent by weight.
Claim 26
Dependent Claim
76 words
The method of claim 20 where in said composition provided the concentration of opacifying pigment is between about 45 to about 55 percent by weight of the total weight of the composition, the concentration of organosiloxane is between about 15 to about 35 percent by weight, the concentration of polymeric material is between about 5 to about 8 percent by weight and the concentration of solvent is between about 12 to about 25 percent by weight.
Claim 27
Dependent Claim
39 words
The method of claim 20 wherein the organosiloxane conforms to the following formulae: ##STR4## where each R is hydrogen or alkyl having from 1-3 carbon atoms, and m is 0, 1, or 2 and n is 4 or 5.
Claim 28
Dependent Claim
25 words
The method of claim 20 where in said composition provided the polymeric material is an acrylic polymer having a molecular weight between 50,000 and 500,000.
Claim 29
Dependent Claim
23 words
The method of claim 20 where in said composition provided the solvent is a volatile alcohol, ketone or ester or mixtures of these.
Claim 30
Dependent Claim
20 words
The method of claim 20 where in said composition provided the organosiloxane is hexamethyldisiloxane or octamethylcyclotetrasiloxane or mixtures of these.
Claim 31
Dependent Claim
24 words
The method of claim 20 where in said composition provided the polymeric material is methyl methacrylate, butyl methacrylate, isobutyl methacrylate or mixtures of these.
Claim 32
Dependent Claim
26 words
The method of claim 20 where in said composition provided the solvent is ethyl alcohol, isopropyl alcohol, methyl ethyl ketone, ethyl acetate or mixtures of these.
Claim 33
Dependent Claim
26 words
The method of claim 20 where in said composition provided the organosiloxane is hexamethyldisiloxane, the polymeric material is an isobutylmethacrylate and the solvent is isopropyl alcohol.
Claim 34
Dependent Claim
26 words
The method of claim 20 where in said composition provided the organosiloxane is octamethylcyclotetrasiloxane, the polymeric material is an isobutylmethacrylate and the solvent is isopropyl alcohol.
Claim 35
Dependent Claim
12 words
The method of claim 18 where said solvent comprises a non-polar solvent.
Claim 36
Dependent Claim
15 words
The method of claim 33 where in said composition provided the solvent comprises a terpene.
Claim 37
Dependent Claim
35 words
A correction fluid composition comprising an opacifying pigment dispersed in a solution of a volatile solvent, a volatile organosiloxane and a film-forming polymeric material, said composition having a drying time of less than 60 seconds.
Claim 38
Dependent Claim
35 words
A correction fluid composition comprising an opacifying pigment dispersed in a solution of a volatile solvent, a volatile organosiloxane and a film-forming polymeric material, said composition having a drying time of less than 60 seconds.
Claim 39
Dependent Claim
73 words
The correction fluid of claim 35 where the concentration of opacifying pigment is between about 30 to about 60 percent by weight of the total weight of the composition, the concentration of organosiloxane is between about 10 to about 40 percent by weight, the concentration of polymeric material is between about 3 to about 10 percent by weight and the concentration of solvent is between about 10 to about 30 percent by weight.
Claim 40
Dependent Claim
12 words
The correction fluid of claim 35, wherein said solvent is a terpene.
Claim 41
Dependent Claim
73 words
A correction fluid of claim 36 where the concentration of opacifying pigment is between about 45 to about 55 percent by weight of the total weight of the composition, the concentration of organosiloxane is between about 15 to about 35 percent by weight, the concentration of polymeric material is between about 5 to about 8 percent by weight and the concentration of solvent is between about 12 to about 25 percent by weight.
Claim 42
Dependent Claim
13 words
A correction fluid of claim 36 where the solvent comprises a non-polar solvent.
Claim 43
Dependent Claim
40 words
A correction fluid of claim 35 where the organosiloxane conforms to the following formulae: ##STR5## where each R is hydrogen or alkyl having from 1-3 carbon atoms, and m is 0, 1, or 2 and n is 4 or 5.
Claim 44
Dependent Claim
22 words
A correction fluid of claim 35 where the polymeric material is an acrylic polymer having a molecular weight between 50,000 and 500,000.
Claim 45
Dependent Claim
20 words
A correction fluid of claim 35 where the solvent is a volatile alcohol, ketone or ester or mixtures of these.
Claim 46
Dependent Claim
17 words
A correction fluid of claim 35 where the organosiloxane is hexamethyldisiloxane or octamethylcyclotetrasiloxane or mixtures of these.
Claim 47
Dependent Claim
21 words
A correction fluid of claim 43 where the polymeric material is methyl methacrylate, butyl methacrylate, isobutyl methacrylate or mixtures of these.
Claim 48
Dependent Claim
23 words
A correction fluid of claim 44 where the solvent is ethyl alcohol, isopropyl alcohol, methyl ethyl ketone, ethyl acetate or mixtures of these.
Claim 49
Dependent Claim
23 words
A correction fluid of claim 45 where the organosiloxane is hexamethyldisiloxane, the polymeric material is an isobutylmethacrylate and the solvent is isopropyl alcohol.
Claim 50
Dependent Claim
23 words
A correction fluid of claim 45 where the organosiloxane is octamethylcyclotetrasiloxane, the polymeric material is an isobutylmethacrylate and the solvent is isopropyl alcohol.
Claim 51
Independent Claim
104 words
A method for providing a corrective coating, suitable for receiving a corrective marking, on the surface of a paper substrate, said method comprising the steps of: a. providing a composition comprising an opacifying pigment dispersed in a solution of a volatile polar solvent, a volatile organosiloxane and a film-forming polymeric material, said composition having a drying time of less than 60 seconds; b. applying said composition to a marking on the surface of a paper substrate to cover said marking; and c. allowing said volatile organosiloxane and said volatile solvent to evaporate to form a film comprising said film-forming polymeric material covering said marking.
Claim 52
Independent Claim
104 words
A method for providing a corrective coating, suitable for receiving a corrective marking, on the surface of a paper substrate, said method comprising the steps of: a. providing a composition comprising an opacifying pigment dispersed in a solution of a volatile polar solvent, a volatile organosiloxane and a film-forming polymeric material, said composition having a drying time of less than 60 seconds; b. applying said composition to a marking on the surface of a paper substrate to cover said marking; and c. allowing said volatile organosiloxane and said volatile solvent to evaporate to form a film comprising said film-forming polymeric material covering said marking.
Claim 53
Dependent Claim
17 words
The method of claim 48, comprising the additional step of applying a corrected marking to said film.
Claim 54
Dependent Claim
12 words
The method of claim 49 where said solvent comprises a polar solvent.
Claim 55
Dependent Claim
54 words
A correction fluid composition comprising an opacifying agent dispersed in a solution comprising a film-forming polymeric material and a volatile terpene solvent, said film-forming polymeric material being capable of forming a durable film on a paper substrate at room temperature within 60 seconds after said correction fluid composition is applied to said paper substrate.
Claim 56
Dependent Claim
54 words
A correction fluid composition comprising an opacifying agent dispersed in a solution comprising a film-forming polymeric material and a volatile terpene solvent, said film-forming polymeric material being capable of forming a durable film on a paper substrate at room temperature within 60 seconds after said correction fluid composition is applied to said paper substrate.
Claim 57
Dependent Claim
13 words
The correction fluid composition of claim 51 where said terpene is a paramenthadiene.
Claim 58
Dependent Claim
14 words
The correction fluid composition of claim 51, wherein said solution further comprises volatile organosiloxane.
Claim 59
Dependent Claim
73 words
A correction fluid of claim 53 where the concentration of opacifying pigment is between about 30 to about 60 percent by weight of the total weight of the composition, the concentration of organosiloxane is between about 10 to about 40 percent by weight, the concentration of polymeric material is between about 3 to about 15 percent by weight and the concentration of terpene is between about 5 to about 30 percent by weight.
Claim 60
Dependent Claim
12 words
The correction fluid composition of claim 54 where said terpene is paramenthadiene.
Claim 61
Independent Claim
81 words
A method for providing a corrective coating on the surface of a paper substrate, said method comprising the steps of: a. providing a composition comprising an opacifying pigment dispersed in a solution that includes a volatile terpene solvent and a film-forming polymeric material; b. applying said composition to a marking on the surface of a paper substrate to cover said marking; and c. allowing said volatile terpene to evaporate to form a film comprising said film-forming polymeric material covering said marking.
Claim 62
Independent Claim
81 words
A method for providing a corrective coating on the surface of a paper substrate, said method comprising the steps of: a. providing a composition comprising an opacifying pigment dispersed in a solution that includes a volatile terpene solvent and a film-forming polymeric material; b. applying said composition to a marking on the surface of a paper substrate to cover said marking; and c. allowing said volatile terpene to evaporate to form a film comprising said film-forming polymeric material covering said marking.
Claim 63
Dependent Claim
17 words
The method of claim 56, comprising the additional step of applying a corrected marking to said film.
Claim 64
Dependent Claim
13 words
The correction fluid of claim 51 wherein said opacifying pigment is titanium dioxide.
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