Patent US4096121A successfully refreshed from Google Patents.
US4096121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of resinous products by chemically reacting silicic acid with poly(vinyl acetate) polymer
Assignee: Individual
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Filing: 1977-03-04
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Granted: 1978-06-20
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Expires: 1997-03-04
Abstract
Abstract A dry granular alkali metal silicate is chemically reacted with a concentrated mineral acid or an acid hydrogen containing salt to produce a white granular silicic acid compound which will react chemically with a poly(vinyl acetate) polymer by heating the mixture with an alkali catalyst to produce a mixture of poly(vinyl silicate) resin, poly(vinyl alcohol silicate) resin, poly(vinyl acetate silicate) resin and poly(vinyl alcohol) polymer.
Inventors
- 👤 David H. Blount
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:47
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/28; C08J; C08J5/00; C08J5/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
119 words
The process for the production of poly(vinyl acetate silicate) and poly(vinyl alcohol silicate) resinous products by the following steps: (a) mixing about 3 parts by weight of silicic acid, 3 to 6 parts by weight of poly(vinyl acetate) polymer in an aqueous dispersion and 1% to 10% by weight of an alkali catalyst; percentage is based on the weight of the silicic acid and poly(vinyl acetate) polymer; (b) heating the mixture to 70° to 110° C for 20 to 60 minutes while agitating, thereby (c) producing a cream colored, resinous product; (d) adding the resinous product to water and dissolving the water soluble, resinous product, poly(vinyl alcohol) polymer, thereby (e) recovering the white, resinous product, poly(vinyl acetate silicate) resin.
Claim 2
Dependent Claim
119 words
The process for the production of poly(vinyl acetate silicate) and poly(vinyl alcohol silicate) resinous products by the following steps: (a) mixing about 3 parts by weight of silicic acid, 3 to 6 parts by weight of poly(vinyl acetate) polymer in an aqueous dispersion and 1% to 10% by weight of an alkali catalyst; percentage is based on the weight of the silicic acid and poly(vinyl acetate) polymer; (b) heating the mixture to 70° to 110° C for 20 to 60 minutes while agitating, thereby (c) producing a cream colored, resinous product; (d) adding the resinous product to water and dissolving the water soluble, resinous product, poly(vinyl alcohol) polymer, thereby (e) recovering the white, resinous product, poly(vinyl acetate silicate) resin.
Claim 3
Dependent Claim
88 words
The method of claim 1, including the further steps of: (a) mixing 1 part by weight of silicic acid, 1 to 2 parts by weight of the water soluble, resinous product, poly(vinyl alcohol) resin, 1% to 10% alkali catalyst by weight, percentage based on the weight of silicic acid and poly(vinyl alcohol) resin, and 5 to 10 parts by weight of water; (b) heating the mixture to 70° to 110° C for 20 to 60 minutes while agitating, thereby (c) producing a resinous product, poly(vinyl alcohol silicate) resin.
Claim 4
Dependent Claim
27 words
The method of claim 1 wherein the alkali catalyst is selected from the group consisting of sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide and mixtures thereof.
Claim 5
Dependent Claim
27 words
The method of claim 2 wherein the alkali catalyst is selected from the group consisting of sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide and mixtures thereof.
Claim 6
Dependent Claim
73 words
The method of claim 2, including the further step of adding one part by weight of the resinous product, poly(vinyl alcohol silicate) resin, 10 parts by weight of ethanol 0.5 to 1 part by weight of an aldehyde and about 0.1 part by weight of concentrated sulfuric acid, then heating the mixture to 70° to 110° C for 20 to 60 minutes while agitating, thereby producing a resinous compound, poly(vinyl acetal silicate) resin.
Claim 7
Dependent Claim
24 words
The method of claim 5 wherein the aldehyde is selected from the group consisting of formaldehyde, acetaldehyde, butyraldehyde, acrolein, propionaldehyde, crotonaldehyde and mixtures thereof.
Claim 8
Dependent Claim
76 words
The method of claim 2, including the further step of adding about 1 part by weight of the resinous product, poly(vinyl alcohol silicate) resin, about 0.5 to 1 part by weight of an organic ketone, 10 parts by weight of ethanol and about 0.1 parts by weight of concentrated sulfuric acid, then heating the mixture to 70° to 110° C for 20 to 60 minutes while agitating, thereby producing a resinous product, poly(vinyl ketal silicate) resin.
Claim 9
Dependent Claim
33 words
The method of claim 7 wherein the ketone is selected from the group consisting of acetone, cyclohexanone, methyl ethyl ketone, diethyl ketone, methyl propyl ketone, ethyl propyl ketone, dipropyl ketone and mixtures thereof.
Claim 10
Dependent Claim
68 words
The method of claim 1, including the further step of adding about one part by weight of the resinous product, poly(vinyl acetate silicate) resin to about 10 parts by weight of ethanol, containing about 0.1 part by weight of concentrated sulfuric acid, then heating the mixture to 70° to 110° C while agitating until ethanol and acetic acid evaporates, thereby producing a resinous product, poly(vinyl alcohol silicate) resin.
Claim 11
Dependent Claim
75 words
The method of claim 1, including the further steps of: (a) adding one part of the resinous product, poly(vinyl acetate silicate) resin to about 10 parts by weight of ethanol, containing about 0.1 part by weight of sulfuric acid and 0.5 to 1 part by weight of an aldehyde; (b) mixing the mixture for 20 to 60 minutes; the poly(vinyl acetate silicate) resin goes into solution, then is precipitated, thereby producing poly(vinyl aldehyde silicate) resin.
Claim 12
Dependent Claim
24 words
The method of claim 10 wherein the aldehyde is selected from the group consisting of formaldehyde, acetaldehyde, butyraldehyde, acrolein, propionaldehyde, crotonaldehyde and mixtures thereof.
References Cited (Backward Citations)
US2306222A
Cited
US2441066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |