Patent US4460753A successfully refreshed from Google Patents.
US4460753A
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Process for producing vinyl chloride polymers in a coated reactor and coating product therefor
Assignee: Zeon Corp
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Filing: 1982-09-28
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Granted: 1984-07-17
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Expires: 2002-09-28
Abstract
Abstract A process for producing a vinyl chloride polymer which comprises polymerizing vinyl chloride monomer or a mixture of it with another monomer copolymerizable therewith in an aqueous medium or in bulk, characterized in that the inside of the polymerization reactor is coated beforehand with the product of reaction of an oily or waxy cyclopentadiene polymer and a phenolic compound with or without an aldehyde compound.
Inventors
- 👤 Makoto Yamamoto
- 👤 Akira Nakayama
- 👤 Riso Iwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:58
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/002; C08F2/004; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
59 words
A process for producing a vinyl chloride polymer which comprises polymerizing vinyl chloride monomer or a mixture of it with another monomer copolymerizable therewith in an aqueous medium or in bulk, characterized in that the inside of the polymerization reactor is coated beforehand with the product of reaction of an oily or waxy cyclopentadiene polymer with a phenolic compound.
Claim 2
Dependent Claim
59 words
A process for producing a vinyl chloride polymer which comprises polymerizing vinyl chloride monomer or a mixture of it with another monomer copolymerizable therewith in an aqueous medium or in bulk, characterized in that the inside of the polymerization reactor is coated beforehand with the product of reaction of an oily or waxy cyclopentadiene polymer with a phenolic compound.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein the phenolic compound is a polyhydric phenol.
Claim 4
Dependent Claim
40 words
The process of claim 1 wherein the reaction product of the cyclopentadiene polymer and the phenolic compound is obtained by reacting 100 parts by weight of the phenolic compound with 5 to 200 parts by weight of the cyclopentadiene polymer.
Claim 5
Dependent Claim
40 words
The process of claim 1 wherein the reaction product of the cyclopentadiene polymer and the phenolic compound is obtained by reacting them in the presence of an acid catalyst at 120° to 200° C. for 5 minutes to 10 hours.
Claim 6
Dependent Claim
32 words
The process of claim 1 wherein the reaction product of the cyclopentadiene polymer and the phenolic compound is coated in the form of an alkaline aqueous solution or an organic solvent solution.
Claim 7
Dependent Claim
16 words
The process of claim 1 wherein the polymerization is carried out in a suspension polymerization mode.
Claim 8
Dependent Claim
18 words
The process of claim 1 wherein the polymerization is carried out in an emulsion or emulsion-suspension polymerization mode.
Claim 9
Dependent Claim
62 words
A process for producing a vinyl chloride polymer which comprises polymerizing vinyl chloride monomer or a mixture of it with another monomer copolymerizable therewith in an aqueous medium or in bulk, characterized in that the inside of the polymerization reactor is coated beforehand with the product of reaction of an oily or waxy cyclopentadiene polymer, a phenolic compound, and an aldehyde compound.
Claim 10
Dependent Claim
62 words
A process for producing a vinyl chloride polymer which comprises polymerizing vinyl chloride monomer or a mixture of it with another monomer copolymerizable therewith in an aqueous medium or in bulk, characterized in that the inside of the polymerization reactor is coated beforehand with the product of reaction of an oily or waxy cyclopentadiene polymer, a phenolic compound, and an aldehyde compound.
Claim 11
Dependent Claim
13 words
The process of claim 8 wherein the phenolic compound is a monohydric phenol.
Claim 12
Dependent Claim
44 words
The process of claim 8 wherein the reaction product of the cyclopentadiene polymer, the phenolic compound and the aldehyde compound is obtained by first reacting the phenolic compound and the aldehyde compound, and then reacting the reaction product with the cyclopentadiene polymer under heat.
Claim 13
Dependent Claim
35 words
The process of claim 8 wherein the reaction product of the cyclopentadiene polymer, the phenolic compound and the aldehyde compound is coated in the form of an alkaline aqueous solution or an organic solvent solution.
Claim 14
Dependent Claim
16 words
The process of claim 8 wherein the polymerization is carried out in a suspension polymerization mode.
Claim 15
Dependent Claim
18 words
The process of claim 8 wherein the polymerization is carried out in an emulsion or emulsion-suspension polymerization mode.
Claim 16
Dependent Claim
128 words
In a process for producing a vinyl chloride polymer by polymerizing vinyl chloride monomer or a mixture of a vinyl chloride monomer with another monomer copolymerizable therewith in an aqueous medium or in bulk in a polymerization reactor having an adherent internal coating thereon for preventing deposition of polymer scales on the inside of the polymerization reactor; and improvement wherein said adherent internal coating comprises a reaction product selected from the group consisting of (1) the product of reaction of an oily or waxy cyclopentadiene polymer with a phenolic compound; and (2) the product of reaction of an oily or waxy cyclopentadiene polymer, a phenolic compound, and an aldehyde compound; and wherein said coating is present in an amount of at least 0.001 g/m 2 , as solids.
Claim 17
Dependent Claim
128 words
In a process for producing a vinyl chloride polymer by polymerizing vinyl chloride monomer or a mixture of a vinyl chloride monomer with another monomer copolymerizable therewith in an aqueous medium or in bulk in a polymerization reactor having an adherent internal coating thereon for preventing deposition of polymer scales on the inside of the polymerization reactor; and improvement wherein said adherent internal coating comprises a reaction product selected from the group consisting of (1) the product of reaction of an oily or waxy cyclopentadiene polymer with a phenolic compound; and (2) the product of reaction of an oily or waxy cyclopentadiene polymer, a phenolic compound, and an aldehyde compound; and wherein said coating is present in an amount of at least 0.001 g/m 2 , as solids.
Claim 18
Dependent Claim
54 words
The process of claim 14 wherein said internal coating comprises the reaction product (1) obtained by reacting 100 parts by weight of a polyhydric phenol with 5 to 200 parts by weight of the cyclopentadiene polymer in the presence of an acid catalyst at 120° to 200° C. for 5 minutes to 10 hours.
Claim 19
Dependent Claim
38 words
The process of claim 14 wherein said coating comprises the reaction product (2) which is obtained by first reacting a monohydric phenol and the aldehyde compound, and then reacting the reaction product with the cyclopentadiene polymer under heat.
References Cited (Backward Citations)
JPS54101889A
Cited
US4256863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |