US4071677A
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US
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Polymerization of ethylenically unsaturated monomers employing alpha-halo substituted diacyl peroxides
Assignee: Argus Chemical Corp
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Filing: 1977-03-04
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Granted: 1978-01-31
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Expires: 1997-03-04
Abstract
Abstract Asymmetrical organic diacyl peroxide polymerization initiators having enhanced initiator efficiency and characterized by the presence of an acyclic acyl group of four or more carbon atoms having bromo or halo substitution at the alpha carbon atom, the other acyl group being different and heterosubstituted. However, when the alpha-halosubstituted acyl group is branched chain the other acyl group may be hydrocarbon.
Inventors
- 👤 Donald W. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:24
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
120 words
A method for initiating the polymerization of a polymerizable monomer containing ethylenic unsaturation comprising subjecting said monomer to polymerization conditions in the presence of a catalytic amount of an organic peroxide of the formula: ##STR5## wherein X is hydrogen, chlorine, or bromine, at least one X being chlorine or bromine; R 1 is saturated aliphatic hydrocarbon of from two to 19 carbon atoms, having from zero to five branches along the chain; and R is an organic radical of from one to 19 carbon atoms and composed solely of carbon, hydrogen, oxygen and halogen of atomic number nine to 35, with the proviso that R has at least one atom of oxygen or halogen, when R 1 is straight chain.
Claim 2
Independent Claim
120 words
A method for initiating the polymerization of a polymerizable monomer containing ethylenic unsaturation comprising subjecting said monomer to polymerization conditions in the presence of a catalytic amount of an organic peroxide of the formula: ##STR5## wherein X is hydrogen, chlorine, or bromine, at least one X being chlorine or bromine; R 1 is saturated aliphatic hydrocarbon of from two to 19 carbon atoms, having from zero to five branches along the chain; and R is an organic radical of from one to 19 carbon atoms and composed solely of carbon, hydrogen, oxygen and halogen of atomic number nine to 35, with the proviso that R has at least one atom of oxygen or halogen, when R 1 is straight chain.
Claim 3
Dependent Claim
21 words
The method in accordance with claim 1, wherein R 1 is branched chain and R has from zero to three heteroatoms.
Claim 4
Dependent Claim
21 words
The method in accordance with claim 1, wherein R 1 is straight chain and R has from one to three heteroatoms.
Claim 5
Dependent Claim
25 words
The method in accordance with claim 1, wherein R 1 is branched chain and R is aliphatic hydrocarbon of from one to seven carbon atoms.
Claim 6
Independent Claim
87 words
A method for initiating the polymerization of a polymerizable monomer containing ethylenic unsaturation comprising subjecting said monomer to polymerization conditions in the presence of a catalytic amount of an organic peroxide of the formula: ##STR6## wherein X 1 is chlorine or bromine; n is an integer of from 1 to 9; R 2 is an organic radical having other than alpha-halo substitution and of from two to 11 carbon atoms having from one to three heteroatoms which are oxy or halogen or atomic number nine to 35.
Claim 7
Independent Claim
87 words
A method for initiating the polymerization of a polymerizable monomer containing ethylenic unsaturation comprising subjecting said monomer to polymerization conditions in the presence of a catalytic amount of an organic peroxide of the formula: ##STR6## wherein X 1 is chlorine or bromine; n is an integer of from 1 to 9; R 2 is an organic radical having other than alpha-halo substitution and of from two to 11 carbon atoms having from one to three heteroatoms which are oxy or halogen or atomic number nine to 35.
Claim 8
Independent Claim
94 words
A method for initiating the polymerization of a polymerizable monomer containing ethylenic unsaturation comprising subjecting said monomer to polymerization conditions in the presence of a catalytic amount of an organic peroxide of the formula: ##STR7## wherein X 2 is chlorine or bromine; n 2 is an integer of from 1 to 6; Y is hydrogen or alkyl, at least one Y being alkyl, and R 3 is an organic radical composed solely of carbon, hydrogen, and the heteroatoms oxygen and halogen of atomic number nine to 35, three being not more than three heteroatoms.
Claim 9
Independent Claim
94 words
A method for initiating the polymerization of a polymerizable monomer containing ethylenic unsaturation comprising subjecting said monomer to polymerization conditions in the presence of a catalytic amount of an organic peroxide of the formula: ##STR7## wherein X 2 is chlorine or bromine; n 2 is an integer of from 1 to 6; Y is hydrogen or alkyl, at least one Y being alkyl, and R 3 is an organic radical composed solely of carbon, hydrogen, and the heteroatoms oxygen and halogen of atomic number nine to 35, three being not more than three heteroatoms.
Claim 10
Dependent Claim
30 words
A method in accordance with claim 6, wherein from one to three Y's are methyl, the methyl groups being on other than adjacent carbon atoms and R 3 is hydrocarbon.
Claim 11
Dependent Claim
20 words
A method in accordance with claim 7, wherein R 3 is aliphatic hydrocarbon of from one to seven carbon atoms.
Claim 12
Dependent Claim
32 words
A method in accordance with claim 6, wherein from one to three Y's are methyl and R 3 is halohydrocarbon, having from one to three halogens of atomic number nine to 35.
Claim 13
Dependent Claim
15 words
A method in accordance with claim 5, wherein said organic peroxide is m-chlorobenzoyl 2-chlorobutyryl peroxide.
Claim 14
Dependent Claim
15 words
A method in accordance with claim 6, wherein said organic peroxide is 2-chloro-3,3,5-trimethylhexanoyl acetyl peroxide.
Claim 15
Dependent Claim
15 words
A method in accordance with claim 6, wherein said organic peroxide is 2-bromo-3,3,5-trimethylhexanoyl acetyl peroxide.
References Cited (Backward Citations)
CA699768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |