US4056559A
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Novel polymers of alkyl methacrylates
Assignee: Rohm and Haas Co
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Filing: 1974-10-23
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Granted: 1977-11-01
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Expires: 1994-10-23
Abstract
Abstract Polymers of esters of methacrylic acid having an average chain length of about 6 to about 50 mers are prepared by an anionic polymerization reaction, carried out in the presence of a chain-regulating alcohol and a catalytic amount of an alkoxide anion, in which control of the molecular weight and molecular weight distribution of the polymer are achieved by regulating the ratio of the total quantity of alcohol employed to the total monomer charge. These polymers, their hydrolysis products, and their derivatives have a wide variety of applications, including use as components in films, coatings, fibers, impregnants, adhesives, printing inks, and binders, and use as modifiers, plasticizers, melt flow improvers, and leveling agents.
Inventors
- 👤 Sheldon N. Lewis
- 👤 Richard A. Haggard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:27
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F297/00; C08F297/02; C08F297/026; C08F8/00; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6245; C08K; C08K3/00; C08K3/01; C08K3/013; C08K3/34; C08K3/36; C09D133/14
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
146 words
An anionically-polymerized addition homopolymer or copolymer of at least one ester of methacrylic acid selected from the group consisting of (C 1 -C 24 ) alkyl esters of methacrylic acid, di(C 1 -C 4 ) alkylamino (C 2 -C 4 ) alkyl esters of methacrylic acid, (C 2 -C 12 ) alkoxyalkyl esters of methacrylic acid, (C 7 -C 12 ) aryloxyalkyl esters of methacrylic acid, (C 7 -C 12 ) aralkoxyalkyl esters of methacrylic acid, and (C 7 -C 10 ) aralkyl esters of methacrylic acid, and, in a copolymer, other anionically copolymerizable monomers, wherein n, the average chain length of the homopolymer or copolymer, is about 6to 50 mers; the polymerization being carried out, in the presence of an alcohol and a catalytic amount of an alkoxide, using controlled rates of addition of at least one of the ester, the alcohol and the alkoxide.
Claim 2
Dependent Claim
146 words
An anionically-polymerized addition homopolymer or copolymer of at least one ester of methacrylic acid selected from the group consisting of (C 1 -C 24 ) alkyl esters of methacrylic acid, di(C 1 -C 4 ) alkylamino (C 2 -C 4 ) alkyl esters of methacrylic acid, (C 2 -C 12 ) alkoxyalkyl esters of methacrylic acid, (C 7 -C 12 ) aryloxyalkyl esters of methacrylic acid, (C 7 -C 12 ) aralkoxyalkyl esters of methacrylic acid, and (C 7 -C 10 ) aralkyl esters of methacrylic acid, and, in a copolymer, other anionically copolymerizable monomers, wherein n, the average chain length of the homopolymer or copolymer, is about 6to 50 mers; the polymerization being carried out, in the presence of an alcohol and a catalytic amount of an alkoxide, using controlled rates of addition of at least one of the ester, the alcohol and the alkoxide.
Claim 3
Dependent Claim
30 words
The polymer of claim 1 wherein at least about 85% by weight of the molecules of the polymer have chain lengths of about √2n - to about 2n - mers.
Claim 4
Dependent Claim
17 words
The polymer of claim 2 wherein the average chain length is about 6 to about 25 mers.
Claim 5
Dependent Claim
17 words
The polymer of claim 2 wherein the polymer is a homopolymer of an ester of methacrylic acid.
Claim 6
Dependent Claim
16 words
The polymer of claim 4 wherein the ester is a (C 1 -C 24 )alkyl methacrylate.
Claim 7
Dependent Claim
16 words
The polymer of claim 5 wherein the ester is a (C 1 -C 4 )alkyl methacrylate.
Claim 8
Dependent Claim
11 words
The polymer of claim 5 wherein the ester is methyl methacrylate.
Claim 9
Dependent Claim
11 words
The polymer of claim 4 wherein the ester is dimethylaminoethyl methacrylate.
Claim 10
Dependent Claim
21 words
The polymer of claim 2 wherein the polymer is a copolymer of at least two (C 1 -C 24 )alkyl; methacrylates.
Claim 11
Dependent Claim
29 words
The polymer of claim 2 wherein the polymer is a copolymer of at least one (C 1 -C 24 )alkyl methacrylate and at least one other copolymerizable ethyleneically-unsaturated monomer.
Claim 12
Dependent Claim
15 words
The polymer of claim 10 wherein the copolymerizable monomer is methacrylonitrile, vinyltriethoxysilane, or dimethylaminoethyl methacrylate.
Claim 13
Dependent Claim
17 words
The polymer of claim 11 wherein the alkyl methacrylate is a (C 1 -C 4 )alkyl methacrylate.
Claim 14
Dependent Claim
12 words
The polymer of claim 12 wherein the alkyl methacrylate is methyl methacrylate.
Claim 15
Dependent Claim
58 words
The polymer of claim 2 wherein the polymer comprises mers having the structure ##STR7## wherein R is a di(C 1 -C 4 )alkylamino(C 2 -C 4 )alkyl group, an alkoxyalkyl group having up to 8 carbon atoms, an aryloxyalkyl or aralkyloxy group having up to 10 carbon atoms, or an aralkyl group having up to 10 carbon atoms.
Claim 16
Dependent Claim
26 words
The polymer of claim 14 wherein the polymer also comprises mers of the structure ##STR8## wherein R 1 is a (C 1 -C 24 )alkyl group.
Claim 17
Dependent Claim
69 words
In a process for preparing polymers of esters of methacrylic acid, the improvement which comprises carrying out the polymerization in the presence of an alcohol and a catalytic amount of an alkoxide, using controlled rates of addition of at least one of the ester, the alcohol and the alkoxide; producing a polymer wherein n - , the average chain length of the polymer is about 6 to 50 mers.
Claim 18
Dependent Claim
69 words
In a process for preparing polymers of esters of methacrylic acid, the improvement which comprises carrying out the polymerization in the presence of an alcohol and a catalytic amount of an alkoxide, using controlled rates of addition of at least one of the ester, the alcohol and the alkoxide; producing a polymer wherein n - , the average chain length of the polymer is about 6 to 50 mers.
Claim 19
Dependent Claim
31 words
The process of claim 16 in which at least about 85% by weight of the molecules of the polymer have chain lengths of about √2n - to about 2n - mers.
Claim 20
Dependent Claim
66 words
The polymer of claim 2 represented by the formula ##STR9## wherein R'O represents the residue of the chain-regulating alcohol used in the polymerization reaction; R'o represents the alcohol portion of an ester of methacrylic acid; M represents the interspersed residue of the comonomer or comonomers; and n' and n" are integers of one or more, wherein the sum of n' and n" is 3 to 90.
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) | 1980-10-31 | 1981-05-02 | 1981-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-31 | 1985-05-02 | 1985-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-31 | 1989-05-02 | 1989-11-01 | $7700.00 | Window Closed / Lapsed |