US4097424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of poly(urethane silicate) resin and foams
Assignee: Individual
•
Filing: 1976-03-04
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Granted: 1978-06-27
•
Expires: 1996-03-04
Abstract
Abstract Silicic acid is reacted with a suitable polyalcohol by using heat and an alkali catalyst to produce a polyalcohol silicate. The polyalcohol silicate is then reacted with a suitable isocyanate to produce a poly(urethane silicate) resin. An activator, such as water, may be mixed with the said resin to cause foaming and/or cross linking of the polymer.
Inventors
- 👤 David H. Blount
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:54
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/04; C08G12/26; C08G12/30; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/302; C08G18/38; C08G18/3893; C08G18/3895; C08G18/70; C08G18/72; C08G18/77; C08G18/778; C08G2101/00; C08G2340/00; C08G2350/00; C08G2390/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
124 words
The process for the production of poly(urethane silicate) compositions which comprises the steps of: (a) providing about 1 mol of silicic acid gel which has been air dried at 25° to 75° C; mols of silicic acid are calculated on the basis of the amount by weight of silicon dioxide in the silicic acid gel; (b) mixing therewith from about 0.5 to about 2 mols of an organic diisocyanate selected from the group consisting of toluene-2,4-diisocyanate; toluene-2,6-diisocyanate; diphenylmethane-4,4'-diisocyanate; naphthalene-1,5-diisocyanate; hexamethylene diisocyanate; 3,3'-dimethyldiphenylmethane-4,4'-diisocyanate; meta-phenylene diisocyanate; triphenylmethane triisocyanate; dianisidine diisocyanate; xenylenediisocyanate; dichloroxenylene diisocyanate; naphthalene-1,5-diisocyanate; fluorene diisocyanate; and mixtures thereof; (c) maintaining said mixture at a temperature of from about 20° to about 60° C; and (d) agitating said mixture until a smooth creamy appearance is obtained.
Claim 2
Dependent Claim
124 words
The process for the production of poly(urethane silicate) compositions which comprises the steps of: (a) providing about 1 mol of silicic acid gel which has been air dried at 25° to 75° C; mols of silicic acid are calculated on the basis of the amount by weight of silicon dioxide in the silicic acid gel; (b) mixing therewith from about 0.5 to about 2 mols of an organic diisocyanate selected from the group consisting of toluene-2,4-diisocyanate; toluene-2,6-diisocyanate; diphenylmethane-4,4'-diisocyanate; naphthalene-1,5-diisocyanate; hexamethylene diisocyanate; 3,3'-dimethyldiphenylmethane-4,4'-diisocyanate; meta-phenylene diisocyanate; triphenylmethane triisocyanate; dianisidine diisocyanate; xenylenediisocyanate; dichloroxenylene diisocyanate; naphthalene-1,5-diisocyanate; fluorene diisocyanate; and mixtures thereof; (c) maintaining said mixture at a temperature of from about 20° to about 60° C; and (d) agitating said mixture until a smooth creamy appearance is obtained.
Claim 3
Dependent Claim
48 words
The process according to claim 1 including the further steps of adding water and a catalyst to said mixture and heating said mixture to a temperature of from about 90° to about 150° C until said mixture expands in volume at least 3 times, forming a self-sustaining foam.
Claim 4
Dependent Claim
40 words
The process according to claim 1 wherein diisocyanate compound is toluene diisocyanate with an isomer ratio of from about 60 to 85 weight percent of the 2,4 isomer and from about 15 to 40 weight percent of the 2,6 isomer.
Claim 5
Dependent Claim
29 words
The process according to claim 2 wherein said catalyst is selected from the group containing of cobalt naphthenate, zinc stearate, tertiary amines and organic tin compounds and mixtures thereof.
Claim 6
Dependent Claim
31 words
The process according to claim 1 wherein a weight of an organic polyhydroxy compound, about equal to the weight of silicic acid gel, is added to said mixture after step (d).
Claim 7
Dependent Claim
67 words
The process according to claim 5 wherein said polyhydroxy compound is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, 2,2'-oxydiethanol, trimethylene glycol, butylene glycol, tetramethylene glycol, glycerol mono-chlorohydrin, polybutylene glycol, di and tripentaerythritol, trimethylol ethane, trimethylol propane, sorbitol, mannitol, castor oil, monoglycerides of hard fatty acids, polyester resins, polyether resins, poly(glyptal silicate) polymers, poly(alkyl silicate) polymers and mixtures thereof.
Claim 8
Dependent Claim
127 words
The process according to claim 1 including the step, prior to the addition of said diisocyanate compound, of adding to said silicic acid gel a stoichiometric amount of an organic polyhydroxy compound selected from the group consisting of glycerol ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, 2,2'-oxydiethanol, trimethylene glycol, butylene glycol, tetramethylene glycol, glycerol mono-chlorohydrin, polybutylene glycol, di and tripentaerythritol, trimethylol ethane, trimethylol propane, sorbitol, mannitol, castor oil, monoglycerides of hard fatty acids, polyester resins, polyether resins and mixtures thereof, and from about 3 to 10 weight percent of sodium carbonate, and heating the mixture to a temperature of from about 70° to 100° C for from 10 to 40 minutes thereby producing a mixture of polyhydroxy alcohol silicate and poly(polyhydroxy alcohol silicate) polymer.
Claim 9
Dependent Claim
53 words
The process of claim 7 including the further step of adding as an activator a 10% by weight aqueous solution of sodium dioctyl sulfosuccinate and heating said mixture to a temperarure of from about 90° to about 150° C until said mixture expands in volume at least 3 times, forming a self-sustaining foam.
Claim 10
Dependent Claim
16 words
The product, diisocyanate silicic acid gel reaction products as produced by the method of claim 1.
Claim 11
Dependent Claim
12 words
The product, self-sustaining foam as produced by the method of claim 2.
Claim 12
Dependent Claim
13 words
The product, poly(urethane silicate) compositions as produced by the method of claim 7.
Claim 13
Dependent Claim
78 words
The process according to claim 7, including the step of adding adipic acid in the weight ratio of 3 parts of silicic acid to 2 parts of adipic acid, wherein said adipic acid is added prior to the step of heating the silicic acid - polyol mixture and wherein the resultant mixture is heated to a temperature of just below the boiling temperature of the organic polyhydroxy compound and up to 150° C for 30 to 60 minutes.
Claim 14
Dependent Claim
74 words
The process according to claim 7, including the step of adding phthalic anhydride in the weight ratio of 3 parts of silicic acid to 2 parts of phthalic anhydride, wherein the said phthalic anhydride is added prior to the step or heating the silicic acid - polyol mixture and wherein resultant mixture is heated to a temperature just above the melting temperature of the organic dicarboxyl anhydride for 30 to 60 minutes, while agitating.
Claim 15
Dependent Claim
13 words
The product, poly(urethane silicate) compositions as produced by the method of claim 5.
References Cited (Backward Citations)
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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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |