US3867331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making emulsion polymerized preplasticized vinyl resins
Assignee: Goodrich Corp
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Filing: 1974-04-01
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Granted: 1975-02-18
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Expires: 1994-04-01
Abstract
Abstract There is disclosed a process for preparing preplasticized vinyl resins by conducting the polymerization reaction of the vinyl monomer or monomers in the presence of a plasticizer therefor while employing an emulsion polymerization technique. In said polymerization reaction the plasticizer and vinyl monomer or monomers are thoroughly mixed together prior to the start of the polymerization reaction and then said mixture is homogenized prior to the start of the reaction.
Inventors
- 👤 Bela K Mikofalvy
- 👤 Thomas J Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:12
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
30 words
A PROCESS OF PRODUCING PREPLASTICIZED POLYMERS OF VINYL AND VINYLIDENE HALIDES AND COPOLYMERS THEREOF WITH EACH OTHER OR EITHER WITH ONE OR MORE VINYLIDENE MONOMERS HAVING AT LEAST ONE TERMINAL
Claim 2
Dependent Claim
30 words
A PROCESS OF PRODUCING PREPLASTICIZED POLYMERS OF VINYL AND VINYLIDENE HALIDES AND COPOLYMERS THEREOF WITH EACH OTHER OR EITHER WITH ONE OR MORE VINYLIDENE MONOMERS HAVING AT LEAST ONE TERMINAL
Claim 3
Dependent Claim
16 words
A process as defined in claim 1 wherein the monomer in the premix is vinyl chloride.
Claim 4
Dependent Claim
13 words
A process as defined in claim 1 wherein the plasticizer is dioctyl phthalate.
Claim 5
Dependent Claim
14 words
A process as defined in claim 1 wherein the emulsifier is sodium lauryl sulfate.
Claim 6
Dependent Claim
13 words
A process as defined in claim 1 wherein the catalyst is isopropyl peroxydicarbonate.
Claim 7
Dependent Claim
21 words
A process as defined in claim 1 wherein the polymerizing temperature is in the range of about 15*C. to about 75*C.
Claim 8
Dependent Claim
39 words
A process as defined in claim 1 wherein the catalyst is added to the monomer premix and the temperature of the premix is maintained below the minimum temperature of reactivity of the catalyst prior to entering said reaction zone.
Claim 9
Dependent Claim
13 words
A process as defined in claim 2 wherein the plasticizer is dioctyl phthalate.
Claim 10
Dependent Claim
14 words
A process as defined in claim 8 wherein the emulsifier is sodium lauryl sulfate.
Claim 11
Dependent Claim
13 words
A process as defined in claim 2 wherein the catalyst is isopropyl peroxydicarbonate.
Claim 12
Dependent Claim
15 words
A process as defined in claim 10 wherein the temperature of reaction is below 80*C.
Claim 13
Dependent Claim
14 words
A process as defined in claim 11 wherein the emulsifier is sodium lauryl sulfate.
Claim 14
Dependent Claim
13 words
A process as defined in claim 12 wherein the plasticizer is dioctyl phthalate.
References Cited (Backward Citations)
US2068424A
Cited
US2674593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |