US4005028A
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Organosilane-containing detergent composition
Assignee: Procter and Gamble Co
•
Filing: 1975-04-22
•
Granted: 1977-01-25
•
Expires: 1995-04-22
Abstract
Abstract A detergent composition containing an organosilane is capable of imparting soil release benefits to hard surfaces washed therewith. Soil adheres to such surfaces less strongly thereby making them easier to clean. The detergent composition can be formulated for use in a wide range of applications, e.g., as a light duty liquid composition, rinse aid, oven cleaner, window cleaner, automatic dishwasher composition, car wash detergent composition or toilet bowl cleaner.
Inventors
- 👤 David C. Heckert
- 👤 David M. Watt, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:15
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/162
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
242 words
A detergent composition capable of imparting soil release benefits to metallic and vitreous surfaces contacted therewith consisting essentially of; a. an organosilane having the formula ##STR20##or is a siloxane oligomer thereof wherein R 1 is an alkyl group containing 1 to 4 carbon atoms, (CH.sub.3).sub.3 Si or Z(OCH.sub.x H.sub.2x).sub.m where x is 2 to 4, m is 1 to 20, and Z is hydrogen, an alkyl group containing 1 to 18 carbons or an acyl group containing 1 to 4 carbon atoms; R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; R 3 is hydrogen or an alkyl group containing 1 to 18 carbon atoms; b is 1 to 3; c is 0 or 1; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x, m and Z are as defined above, or oxygen provided only one R 4 is oxygen and further provided that there is no X - when R 4 is oxygen; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus; and b. a water-soluble organic detergent selected from the group consisting of nonionic, zwitterionic and ampholytic detergents and mixtures thereof in a weight ratio of organosilane to detergent of from 2:1 to 1:10,000.
Claim 2
Dependent Claim
242 words
A detergent composition capable of imparting soil release benefits to metallic and vitreous surfaces contacted therewith consisting essentially of; a. an organosilane having the formula ##STR20##or is a siloxane oligomer thereof wherein R 1 is an alkyl group containing 1 to 4 carbon atoms, (CH.sub.3).sub.3 Si or Z(OCH.sub.x H.sub.2x).sub.m where x is 2 to 4, m is 1 to 20, and Z is hydrogen, an alkyl group containing 1 to 18 carbons or an acyl group containing 1 to 4 carbon atoms; R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; R 3 is hydrogen or an alkyl group containing 1 to 18 carbon atoms; b is 1 to 3; c is 0 or 1; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x, m and Z are as defined above, or oxygen provided only one R 4 is oxygen and further provided that there is no X - when R 4 is oxygen; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus; and b. a water-soluble organic detergent selected from the group consisting of nonionic, zwitterionic and ampholytic detergents and mixtures thereof in a weight ratio of organosilane to detergent of from 2:1 to 1:10,000.
Claim 3
Dependent Claim
159 words
The composition of claim 1 wherein the organosilane has the formula ##STR21##or is a siloxane oligomer thereof wherein Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, x is 2 to 4, and m is 1 to 20; R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; b is 1 to 3; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x, m and Z are as defined above, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus.
Claim 4
Dependent Claim
182 words
The composition of claim 1 wherein the organosilane has the formula ##STR22##or is a siloxane oligomer thereof wherein Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, x is 2 to 4, and m is 1 to 20; R 2 is an alkyl group containing 1 to 18 carbon atoms; R 1 is an alkyl group containing 1 to 4 carbon atoms, a is 0 or 1; d is 1 or 2 provided a+d does not exceed 2; b is 1 to 3; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms. (C.sub.x H.sub.2x O).sub.m Z where x, m and Z are as defined above, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus.
Claim 5
Dependent Claim
166 words
The composition of claim 1 wherein the organosilane has the formula ##STR23##or is a siloxane oligomer thereof wherein Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, x is 2 to 4, and m is 1 to 20; R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; R 3 is an alkyl group containing 1 to 18 carbon atoms; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms. (C.sub.x H.sub.2x O).sub.m Z where x, m and Z are as defined above, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus.
Claim 6
Dependent Claim
189 words
The composition of claim 1 wherein the organosilane has the formula ##STR24##or is a siloxane oligomer thereof wherein Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, x is 2 to 4, and m is 1 to 20; R 2 is an alkyl group containing 1 to 18 carbon atoms; R 1 is an alkyl group containing 1 to 4 carbon atoms; a is 0 or 1; d is 1 or 2 provided a+d does not exceed 2; R 3 is an alkyl group containing 1 to 18 carbon atoms; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x, m and Z are as defined above, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus.
Claim 7
Dependent Claim
152 words
The composition of claim 1 wherein the or organosilane has the formula ##STR25##or is a siloxane oligomer thereof wherein R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; b is 1 to 3; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x is 2 to 4, m is 1 to 20, and Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus.
Claim 8
Dependent Claim
159 words
The composition of claim 1 wherein the organosilane has the formula ##STR26## or is a siloxane oligomer thereof wherein R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; R 3 is an alkyl group containing 1 to 18 carbon atoms; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x is 2 to 4, m is 1 to 20, and Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus
Claim 9
Dependent Claim
159 words
The composition of claim 1 wherein the organosilane has the formula ##STR27##or is a siloxane oligomer thereof wherein Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, x is 2 to 4, and m is 1 to 20; R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; b is 1 to 3; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x, m and Z are as defined above, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus.
Claim 10
Dependent Claim
183 words
The composition of claim 1 wherein the organosilane has the formula ##STR28## or is a siloxane oligomer thereof wherein Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, x is 2 to 4, and m is 1 to 20; R 2 is an alkyl group containing 1 to 18 carbon atoms; R 1 is an alkyl group containing 1 to 4 carbon atoms; a is 0 or 1; d is 1 or 2 provided a+d does not exceed 2; b is 1 to 3; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x, m and Z are as defined above, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus.
Claim 11
Dependent Claim
151 words
The composition of claim 1 wherein the organosilane has the formula ##STR29##or is a siloxane oligomer thereof wherein R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; b is 1 to 3; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x is 2 to 4, m is 1 to 20, and Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus.
Claim 12
Dependent Claim
190 words
The composition of claim 1 in which said organosilane has the formula ##STR30##or is a siloxane oligomer thereof wherein R 1 is an alkyl group containing 1 to 4 carbon atoms, (CH.sub.3).sub.3 Si or Z(OC.sub.x H.sub.2x).sub.m where x is 2 to 4, m is 1 to 20, and Z is hydrogen, an alkyl group containing 1 to 18 carbons or an acyl group containing 1 to 4 carbon atoms; R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; R 3 is hydrogen or an alkyl group containing 1 to 18 carbon atoms; b is 1 to 3; c is 0 or 1; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x, m and Z are as defined above, or oxygen provided only one R 4 is oxygen and further provided than when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 2 carbon atoms; and X is halide.
Claim 13
Dependent Claim
147 words
The composition of claim 1 wherein the organosilane has the formula ##STR31##or is a siloxane oligomer thereof wherein R 1 is an alkyl group containing 1 to 4 carbon atoms; b is 1 to 3; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon toms, (C.sub.x H.sub.2x O).sub.m Z where x is 2 to 4, m is 1 to 20, and Z is hydrogen, and alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 4 to 22 carbon atoms; X is a halide; and Y is nitrogen, sulfur or phosphorus.
Claim 14
Dependent Claim
163 words
The composition of claim 1 wherein the organosilane has the formula ##STR32##or is a siloxane oligomer thereof wherein R 1 is an alkyl group containing 1 to 4 carbon atoms; R 2 is an alkyl group containing 1 to 18 carbon atoms, a is 1 or 2; b is 1 to 3; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x is 2 to 4, m is 1 to 20, and Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorus.
Claim 15
Dependent Claim
171 words
The composition of claim 1 wherein the organosilane has the formula ##STR33##or is a siloxane oligomer thereof wherein R 1 is an alkyl group containing 1 to 4 carbon atoms; R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; R 3 is an alkyl group containing 1 to 18 carbon atoms; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x is 2 to 4, m is 1 to 20, and Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atms; X is a halide; and Y is nitrogen, sulfur or phosphorus.
Claim 16
Dependent Claim
162 words
The composition of claim 1 wherein the organosilane has the formula ##STR34##or is a siloxane oligomer thereof wherein R 1 is an alkyl group containing 1 to 4 carbon atoms; R 2 is an alkyl group containing 1 to 18 carbon atoms; a is 0 to 2; b is 1 to 3; R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (C.sub.x H.sub.2x O).sub.m Z where x is 2to 4, m is 1 to 20, and Z is hydrogen, an alkyl group containing 1 to 18 carbon atoms or an acyl group containing 1 to 4 carbon atoms, or oxygen provided only one R 4 is oxygen and further provided that when R 4 is oxygen there is no X -; R 5 is an alkyl, aryl or arylalkyl group containing 1 to 22 carbon atoms; X is halide; and Y is nitrogen, sulfur or phosphorous.
Claim 17
Dependent Claim
15 words
The composition of claim 1 wherein b is 1 and X is chloride or bromide.
Claim 18
Dependent Claim
17 words
The composition of claim 1 wherein the oligomer has a degree of polyermization of 2 to 100.
Claim 19
Dependent Claim
17 words
The composition of claim 1 wherein the ratio of organosilane to detergent is from 1:1 to 1:500.
Claim 20
Dependent Claim
40 words
The composition of claim 17 intended for use as a light-duty liquid detergent composition consisting essentially of: a. from 0.01% to 10% of the organosilane; b. from 10% to 90% of the water-soluble organic detergent; and c. the balance water.
Claim 21
Dependent Claim
38 words
The composition of claim 1 intended for use as a rinse aid consisting essentially of: a. from 0.1% to 50% of the organosilane; b. from 5% to 99.9% of a water-soluble nonionic detergent; and c. the balance water.
Claim 22
Dependent Claim
55 words
The composition of claim 1 intended for use in an automatic dishwashing machine consisting essentially of: a. from 0.01% to 5% of the organosilane; b. from 0.1% to 15% of the water-soluble nonionic detergent; c. from 5% to 60% of a water-soluble organic or inorganic alkaline builder salt; and d. the balance inert filler salts.
Claim 23
Dependent Claim
66 words
The composition of claim 1 intended for use in a commercial automatic dishwashing machine consisting essentially of: a. from 0.1 to 5% of the organosilane; b. from 0.1% to 15% of the water-soluble nonionic detergent; c. from 5% to 60% of a water-soluble organic or inorganic alkaline builder salt; d. from 10% to 40% of an alkali metal base; and e. the balance inert filler salts.
Claim 24
Dependent Claim
41 words
The composition of claim 1 intended for use as a window cleaner consisting essentially of: a. from 0.001% to 5% of the organosilane; b. from 0.1% to 5% of the water-soluble organic detergent; and c. the balance an inert organic solvent.
Claim 25
Dependent Claim
50 words
The composition of claim 1 intended for use as an abrasive cleaner consisting essentially of: a. from 0.002% to 5% of the organosilane; b. from 0.01% to 10% of the water-soluble organic detergent; and c. from 50% to 95% of a water-insoluble abrasive; and d. the balance inert filler salts.
Claim 26
Dependent Claim
40 words
The composition of claim 1 intended for use as a car wash detergent composition consisting essentially of: a. from 0.01% to 10% of the organosilane; b. from 20% to 35% of the water-soluble organic detergent; and c. the balance water.
Claim 27
Dependent Claim
56 words
The composition of claim 1 intended for use as intank toilet bowl cleaner consisting essentially of: a. from 0.01% to 10% of the organosilane; b. from 0.5% to 20% of the water-soluble organic detergent; c. from 0.1% to 5% of sodium bisulfate; d. from 0.1% to 20% of a lower alcohol; and e. the balance water.
Claim 28
Dependent Claim
29 words
The method of imparting soil release benefits to cooking utensils and tableware comprising rinsing the cooking utensils and tableware with a water solution containing the organosilane of claim 1.
Claim 29
Dependent Claim
12 words
The composition of claim 1 wherein the organosilane has the formula ##STR35##
Claim 30
Dependent Claim
18 words
. The composition of claim 17 wherein the oligomer has a degree of polymerization of 2 to 20.
Claim 31
Dependent Claim
17 words
The composition of claim 18 wherein the ratio of organosilane to detergent is from 1:3 to 1:60.
Claim 32
Dependent Claim
39 words
The composition of claim 19 consisting essentially of: a. from 0.1% to 2% of the organosilane b. from 20% to 40% of the water-soluble organic detergent; c. from 0.5% to 5% of an electrolyte; and d. the balance water.
Claim 33
Dependent Claim
40 words
The composition of claim 20 consisting essentially of: a. from 1% to 10% of the organosilane; b. from 10% to 50% of the water-soluble nonionic detergent; c. from 1% to 30% of a sequestering agent; and d. the balance water.
Claim 34
Dependent Claim
38 words
The composition of claim 21 wherein the composition additionally contains from 7% to 35% of an alkali metal silicate having a SiO 2 :M 2 O ratio of from 3.6:1 to 1:2 wherein M is an alkali metal.
Claim 35
Dependent Claim
56 words
The composition of claim 22 consisting essentially of: a. from 0.1% to 2% of the organosilane; b. from 1% to 5% of the water-soluble nonionic detergent; c. from 30% to 50% of the organic or inorganic alkaline builder salt; d. from 10% to 30% of the alkali metal base; and e. the balance inert filler salts.
Claim 36
Dependent Claim
34 words
The composition of claim 23 consisting essentially of: a. from 0.002% to 1% of the organosilane; b. from 0.5% to 3% of the water-soluble organic detergent; and c. the balance the inert organic solvent.
Claim 37
Dependent Claim
42 words
The composition of claim 24 consisting essentially of: a. from 0.01% to 1% of the organosilane; b. from 1% to 5% of the water-soluble organic detergent; c. from 50% to 75% of the water-insoluble abrasive; and d. the balance inert filler salts.
Claim 38
Dependent Claim
13 words
The composition of claim 25 additionally containing from 1% to 10% magnesium sulfate.
Claim 39
Dependent Claim
23 words
The composition of claim 31 additionally containing from 1% to 20% of a hydrotrope and from 1% to 20% of a lower alcohol.
Claim 40
Dependent Claim
25 words
The composition of claim 23 wherein the composition additionally contains sufficient bleach to give the product an available chlorine content of from 0.5% to 10%.
Claim 41
Dependent Claim
51 words
The composition of claim 34 additionally containing from 7% to 35% of an alkali metal silicate having a SiO 2 :M 2 O ratio of from 3.6:1 to 1:2 wherein M is an alkali metal and sufficient bleach to give the product an available chlorine content of from 0.5% to 10%.
Claim 42
Dependent Claim
73 words
The composition of claim 39 consisting essentially of: a. from 0.1% to 2% of the organosilane; b. from 1% to 5% of the water-soluble nonionic detergent; c. from 30% to 50% of the water-soluble organic or inorganic alkaline builder salt; d. from 10% to 20% of the alkali metal silicate; e. sufficient bleach to give the product an available chlorine content of from 1% to 5%; and f. the balance inert filler salts.
Claim 43
Dependent Claim
14 words
The composition of claim 41 wherein the inorganic alkaline builder salt is sodium tripolyphosphate.
Claim 44
Dependent Claim
12 words
The composition of claim 42 wherein the bleach is chlorinated trisodium phosphate.
Claim 45
Dependent Claim
16 words
The composition of claim 43 wherein the inert filler salt is sodium sulfate or sodium chloride.
Claim 46
Dependent Claim
63 words
The composition of claim 44 wherein the organosilane has the formula ##STR36##wherein R 1 is an alkyl group containing 1 to 4 carbon atoms, b is 1 to 3, R 4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, R 5 is an alkyl group containing 4 to 22 carbon atoms, X is halide and Y is nitrogen.
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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) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |