US5256191A — Correction fluid compositions

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.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1996-10-25	1997-04-26	1997-10-26	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2000-10-25	2001-04-26	2001-10-26	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2004-10-25	2005-04-26	2005-10-26	$7700.00	Window Closed / Lapsed

Correction fluid compositions

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