Patent US3855162A successfully refreshed from Google Patents.
US3855162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of vinyl chloride monomer in the presence of siliceous fillers
Assignee: GERDEC
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Filing: 1973-04-20
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Granted: 1974-12-17
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Expires: 1993-04-20
Abstract
Abstract A process for producing reinforced polymers comprising the step of polymerizing vinyl chloride in the presence of a phyllosilicate filler such as asbestos, the improvement wherein said polymerizing is conducted in the presence of 1-20 percent by weight water based on the weight of the phyllosilicate filler, and preferably with the addition of a small amount of alcohol.
Inventors
- 👤 J Durand
- 👤 C Fabre
- 👤 M Osgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:50
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
85 words
IN A PROCESS FOR PRODUCING REINFORCED POLYMERS COMPRISING THE STEP OF POLYMERIZING VINYL CHLORIDE IN THE PRESENCE OF A PHYLLOSILATE FILLER AND A POLYMERIZATION SAID POLYMERIZING BEING ETHER BULK POLYMERIZATION, SOLVENT POLYMERZATION, OR PRECIPITATION POLYMERIZATION IN THE PRESENCE OF NON-AQUEOUS DILUENT, THE IMPROVEMENT WHEREIN SAID POLYMERIZING IS CONDUCTED IN A POLYMERIZATION MEDIUM IN THE CONTROLLED PRESENCE OF 1-20 PERCENT BY WEIGHT WATER BASED ON THE WEIGHT OF THE PHYLLOSILICATE FILLTER THE WATER CONTENT OF THE POLYMERIZATION MEDIUM BEING ADJUSTED BY THE ADDITION OF WATER THERETO.
Claim 2
Dependent Claim
85 words
IN A PROCESS FOR PRODUCING REINFORCED POLYMERS COMPRISING THE STEP OF POLYMERIZING VINYL CHLORIDE IN THE PRESENCE OF A PHYLLOSILATE FILLER AND A POLYMERIZATION SAID POLYMERIZING BEING ETHER BULK POLYMERIZATION, SOLVENT POLYMERZATION, OR PRECIPITATION POLYMERIZATION IN THE PRESENCE OF NON-AQUEOUS DILUENT, THE IMPROVEMENT WHEREIN SAID POLYMERIZING IS CONDUCTED IN A POLYMERIZATION MEDIUM IN THE CONTROLLED PRESENCE OF 1-20 PERCENT BY WEIGHT WATER BASED ON THE WEIGHT OF THE PHYLLOSILICATE FILLTER THE WATER CONTENT OF THE POLYMERIZATION MEDIUM BEING ADJUSTED BY THE ADDITION OF WATER THERETO.
Claim 3
Dependent Claim
22 words
A process according to claim 1, said polymerizing being conducted in the further presence of an organic compound having an alcohol function.
Claim 4
Dependent Claim
30 words
A process according to claim 2 wherein the organic compound having an alcohol function is employed in an amount of 0.05-15 percent based on the weight of the phyllosilicate filler.
Claim 5
Dependent Claim
23 words
A process according to claim 2 wherein the organic compound having an alcohol function is a lower aliphatic alcohol of 1-6 carbon atoms.
Claim 6
Dependent Claim
49 words
A process according to claim 2, the organic compound having an alcohol function is diacetone alcohol, a free, or methyl, ethyl, butyl monoether or acetate ester of ethylene glycol, diethylene glycol, polyethylene glycol, having an average molecular weight from 190 to 7,500, polyvinyl alcohol, or partially hydrolyzed polyvinyl acetate.
Claim 7
Dependent Claim
20 words
A process according to claim 2 wherein the organic compound having an alcohol function is sorbitol, saccharose or soluble starch.
Claim 8
Dependent Claim
26 words
A process according to claim 1 wherein the polymerizing is conducted in the presence of at least one non-aqueous diluent which does not dissolve the polymer.
Claim 9
Dependent Claim
20 words
A process according to claim 1 wherein the polymerizing is conducted in the presence of a solvent for polyvinyl chloride.
Claim 10
Dependent Claim
13 words
A process according to claim 1 wherein the polymerizing is conducted in bulk.
Claim 11
Dependent Claim
12 words
A process according to claim 1 wherein the phyllosilicate filler is hydrolyzed.
Claim 12
Dependent Claim
12 words
A process according to claim 1 wherein the phyllosilicate filler is silanated.
Claim 13
Dependent Claim
12 words
A process according to claim 1 wherein the phyllosilicate filler is natural.
Claim 14
Dependent Claim
13 words
A process according to claim 1 wherein the phyllosilicate filler is hydrolyzed asbestos.
Claim 15
Dependent Claim
13 words
A process according to claim 1 wherein the phyllosilicate filler is silanated asbestos.
Claim 16
Dependent Claim
13 words
A process according to claim 1 wherein the phyllosilicate filler is natural asbestos.
Claim 17
Dependent Claim
28 words
A process according to claim 1 wherein said polymerizing is conducted in the presence of 2-15 percent by weight water based on the weight of the phyllosilicate filler.
Claim 18
Dependent Claim
27 words
A process as defined by claim 1 wherein the water added to the polymerization medium is adsorbed into the phyllosilicate prior to the initiation of the polymerization.
Claim 19
Dependent Claim
21 words
A process as defined by claim 17 wherein the water is absorbed into the phyllosilicate prior to contact with vinyl chloride.
Claim 20
Dependent Claim
18 words
A process as defined by claim 17 wherein the phyllosilicate is natural asbestos, hydrolyzed asbestos or silanated asbestos.
Claim 21
Dependent Claim
18 words
A process as defined by claim 18 wherein the phyllosilicate is natural asbestos, hydrolyzed asbestos or silanated asbestos.
Claim 22
Dependent Claim
29 words
A process As defined by claim 20 wherein the adsorption of water is conducted by stirring the asbestos and water for 0.5 to 24 hours at about room temperature.
Claim 23
Dependent Claim
13 words
A process as defined by claim 19 wherein the phyllosilicate is silanated asbestos.
Claim 24
Dependent Claim
13 words
A process as defined by claim 20 wherein the phyllosilicate is silanated asbestos.
Claim 25
Dependent Claim
22 words
A process according to claim 19, said polymerizing being conducted in the further presence of an organic compound having an alcohol function.
Claim 26
Dependent Claim
30 words
A process according to claim 24 wherein the organic compound having an alcohol function is employed in an amount of 0.05-15 percent based on the weight of the phyllosilicate filler.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |