US4150210A
Expired / Lapsed
US
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Emulsion polymerization of vinyl chloride polymers using mixed emulsifier system
Assignee: Stauffer Chemical Co
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Filing: 1978-06-19
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Granted: 1979-04-17
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Expires: 1998-06-19
Abstract
Abstract A one-step process is disclosed for the emulsion polymerzation of vinyl chloride, optionally in the presence of copolymerizable comonomers, using a water-soluble initiator or initiator system and a mixed emulsifier of: (1) at least one C12-C18 straight chain alkyl or alkenyl surfactant, such as sodium lauryl sulfate; (2) at least one C14-C20 straight chain alkyl or alkenyl alcohol, such as stearyl alcohol; and (3) at least one C5-C8 straight alkyl chain sulfosuccinate emulsifier; such as, sodium diamyl sulfosuccinate and sodium dihexyl sulfosuccinate. The presence of the sulfosuccinate emulsifier allows the reaction to be run at lower temperatures than possible using just the other two components of the emulsifier with production of a polymer latex having good mechanical stability. The polymer product is useful as a plastisol or organosol resin.
Inventors
- 👤 Donald F. Anderson
- 👤 Stephen D. Farrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:34
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
137 words
In an emulsion polymerization procedure for forming vinyl chloride homopolymers or copolymers by heating a monomer charge containing vinyl chloride in the presence of a water soluble initiator and an emulsifier to form a latex containing particles of said polymers in a single step, the improvement which comprises using as an emulsifier, a mixture of: (1) at least one C 12 -C 18 straight chain alkyl or alkenyl surfactant of the formula ROSO 3 A or RC(O)OA, where R is a C 12 -C 18 straight alkyl or alkenyl group and A is an alkali metal cation, alkaline earth metal cation or alkanol amine of up to 6 carbon atoms; (2) at least one C 14 -C 20 straight chain alkyl or alkenyl alcohol; and (3) at least one C 5 -C 8 straight alkyl chain sulfosuccinate.
Claim 2
Dependent Claim
137 words
In an emulsion polymerization procedure for forming vinyl chloride homopolymers or copolymers by heating a monomer charge containing vinyl chloride in the presence of a water soluble initiator and an emulsifier to form a latex containing particles of said polymers in a single step, the improvement which comprises using as an emulsifier, a mixture of: (1) at least one C 12 -C 18 straight chain alkyl or alkenyl surfactant of the formula ROSO 3 A or RC(O)OA, where R is a C 12 -C 18 straight alkyl or alkenyl group and A is an alkali metal cation, alkaline earth metal cation or alkanol amine of up to 6 carbon atoms; (2) at least one C 14 -C 20 straight chain alkyl or alkenyl alcohol; and (3) at least one C 5 -C 8 straight alkyl chain sulfosuccinate.
Claim 3
Dependent Claim
21 words
A process as claimed in claim 1 wherein the C 12 -C 18 straight chain alkyl surfactant is sodium lauryl sulfate.
Claim 4
Dependent Claim
20 words
A process as claimed in claim 1 wherein the C 14 -C 20 straight chain alkyl alcohol is stearyl alcohol.
Claim 5
Dependent Claim
20 words
A process as claimed in claim 1 wherein the C 5 -C 8 straight chain sulfosuccinate is sodium dihexyl sulfosuccinate.
Claim 6
Dependent Claim
33 words
A process as claimed in claim 1 wherein the amount of the emulsifier mixture which is present is from about 0.7% to about 3%, by weight, based on the amount of polymerizable monomers.
Claim 7
Dependent Claim
26 words
A process as claimed in claim 1 wherein the surfactant is sodium lauryl sulfate, the alcohol is stearyl alcohol and the sulfosuccinate is sodium dihexyl sulfosuccinate.
Claim 8
Dependent Claim
29 words
A process as claimed in claim 1 wherein the combined amount of surfactant, alcohol and sulfosuccinate ranges from about 0.8% to about 2.0% by weight of the polymerizable monomers.
Claim 9
Dependent Claim
15 words
A process as claimed in claim 1 wherein the emulsifier mixture is a prehomogenized mixture.
Claim 10
Dependent Claim
15 words
A process as claimed in claim 7 wherein the emulsifier mixture is a prehomogenized mixture.
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) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |