US3692816A
Expired / Lapsed
US
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Organomineral polymeric material
Assignee: Individual
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Filing: 1970-10-26
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Granted: 1972-09-19
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Expires: 1990-10-26
Abstract
Abstract The material comprises a siliceous mineral framework constituted by the two-dimensional framework of a phyllosilicate and organic radicals having a reactable group which is capable of polymerization, the radicals being linked by Si-O-Si siloxane bonds to the tetrahedral layer of the phyllosilicate from which a fraction of the octahedral layer has been removed. The method of preparation of the material comprises acid hydrolysis of a phyllosilicate for the partial removal of the octahedral layer followed by reaction of the phyllosilicate with an organosilane having at least one reactable organic group which is capable of subsequent polymerization.
Inventors
- 👤 Marc Della Faille
- 👤 Jose Fripiat
- 👤 Jean Mercier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:24
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/40; C09C1/42; C08; C08F; C08F30/00; C08F30/04; C08F30/08; C08G; C08G83/00; C08G83/001; C08K; C08K3/00; C08K3/02; C08K3/06; C08K5/00; C08K5/04; C08K5/14; C08K7/00; C08K7/02; C08K7/04; C08K7/10; C08K7/12; C08K9/00; C08K9/04; C08K9/06; C08L; C08L101/00; C08L23/00; C08L23/02; C08L23/16; C08L83/00; C01; C01P; C01P2004/00; C01P2004/60; C01P2006/00; C01P2006/12; C08L2203/00; C08L2203/16; C08L2312/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
159 words
A method of preparation of an organo-mineral polymeric material having metallic atoms in an octahedral layer comprising the steps of simultaneously subjecting a phyllosilicate at a pH <2 to an acid hydrolysis in a mixture of a mineral acid and an alcohol having a normal concentration between 2 and 8 at a temperature within the range of 15* to 80* C. to eliminate at least 5 percent by weight of the metallic atoms of the octahedral layer, and reacting said phyllosilicate with an organosilane having the formula: wherein X represents an atom of halogen or a hydroxyl or alternatively an alkoxy group, R represents an atom of hydrogen or an alkyl radical and wherein a is a whole number from 1 to 3, b is a whole number from 0 to 2, with (a +b. + c) 4, and wherein n is equal to or greater than 2 and wherein there is present at least one ethylenic double bond.
Claim 2
Dependent Claim
62 words
A process according to claim 2, wherein said acid hydrolysis is carried out with 6 N hydrochloric acid at 50* C. for a period between 10 minutes and 10 hours to remove 5 to 25 percent by weight of the octahedral layer and to graft silanic radicals simultaneously on 5 to 30 percent of the silanolic sites formed on the tetrahedral layer.
Claim 3
Dependent Claim
61 words
A process according to claim 2 wherein said acid hydrolysis is carried out with 6 N hydrochloric acid at 50* C. for a period between 3 and 50 hours to remove 25 to 100 percent by weight of the octahedral layer and to graft silanic radicals simultaneously on 5 to 30 percent of the silanolic sites formed on the tetrahedral layer.
Claim 4
Dependent Claim
24 words
A process according to claim 2 wherein said phyllosilicate is chrysotile, said organosilane is allyl-dimethylchlorosilane and the product of the reaction is readily vulcanizable.
Claim 5
Dependent Claim
11 words
A process according to claim 2 wherein said organosilane is methylvinylchlorosilane.
Claim 6
Dependent Claim
25 words
A process to claim 2, including the step of copolymerizing said material with an organic monomer selected from the group consisting of alkylacrylate and methacrylate.
Claim 7
Independent Claim
172 words
A method of preparation of an organo-mineral polymeric strengthening filler for resins, the steps of reacting an organosilane having at least one ethylenic double bond with chrysotile at a pH <2 with an acid-alcohol mixture having a normal concentration between 2 and 8 at a temperature within the range of 15* to 80* C., the chrysotile providing a proportion of solid material in the acid-alcohol mixture in the range of 10 to 500 g/l and a quantity of organosilane providing a weight ratio between the organosilane and the chrysotile of between 0.05, and 0.5, the chrysotile fibers having dimensions of from 200 microns to 4 millimeters, removing by said acid alcohol reaction 5 to 25 percent by weight of the octahedral layer of the chrysotile, said acid being 6 N hydrochloric acid at 50* C., the reaction being carried out for from 10 minutes to 10 hours, the grafting of the silanic radicals simultaneously accurring on 5 to 30 percent of the silanolic sites formed on the tetrahedral layer of the chrysotile.
Claim 8
Independent Claim
165 words
A method of preparation of an organo-mineral polymeric strengthening filler for elastomers, the steps of reacting an organosilane having at least one ethylenic double bond with chrysotile at a pH less than 2 with an acid-alcohol mixture having a normal concentration between 2 and 8 at a temperature within the range of 15* to 80* C., the amount of chrysotile providing a proportion of solid material in the acid-alcohol mixture of from 10 to 500 g/l, the organosilane providing a weight ratio with the chrysotile of between 0.05 and 0.5, the chrysotile fibers having dimensions of from 200 microns to 4 millimeters, removing by said acid alcohol reaction from 25 to 100 percent by weight of the octahedral layer of the chrysotile, the acid being 6 N hydrochloric acid at 50* C., the reaction continuing for from 3 to 50 hours, the simultaneous grafting of the silanic radicals occurring on 5 to 30 percent of the silanolic sites on the tetrahedral layer of the chrysotile.
References Cited (Backward Citations)
US3471588A
Cited
US3436252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |