US4059616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel methacrylic polymers having allyl functionality
Assignee: Rohm and Haas Co
•
Filing: 1974-10-23
•
Granted: 1977-11-22
•
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 having allyl functionality 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
2026-10-25 12:50
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; C09D133/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
An alkoxide-polymerized addition homopolymer or copolymer of an ester of methacrylic acid wherein the polymer comprises mers having the formula ##STR6## wherein R is a (C 2 -C 4 ) alkenyl group, an allyloxyalkyl group having up to 12 carbon atoms, or an allyloxyalkoxyalkyl group having up to 12 carbon atoms, and, optionally, mers derivable from other anionically copolymerizable monomers, and wherein n, the average chain length of the polymer is about 6 to 50 mers; the polmerization 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 ester, the alcohol and the alkoxide.
Claim 2
Dependent Claim
110 words
An alkoxide-polymerized addition homopolymer or copolymer of an ester of methacrylic acid wherein the polymer comprises mers having the formula ##STR6## wherein R is a (C 2 -C 4 ) alkenyl group, an allyloxyalkyl group having up to 12 carbon atoms, or an allyloxyalkoxyalkyl group having up to 12 carbon atoms, and, optionally, mers derivable from other anionically copolymerizable monomers, and wherein n, the average chain length of the polymer is about 6 to 50 mers; the polmerization 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 ester, the alcohol and the alkoxide.
Claim 3
Dependent Claim
28 words
The polymer of claim 1 wherein at least about 85% by weight of the molecules of the polymers 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
11 words
The polymer of claim 2 wherein R is an allyl group.
Claim 6
Dependent Claim
11 words
The polymer of claim 2 wherein R is an allyloxyethyl group.
Claim 7
Dependent Claim
27 words
The polymer of claim 2 wherein the polymer also comprises mers having the formula ##STR7## wherein R 1 is a (C 1 -C 24 ) alkyl group.
Claim 8
Dependent Claim
17 words
The polymer of claim 6 wherein R 1 is a (C 1 -C 4 ) alkyl group.
Claim 9
Dependent Claim
66 words
The polymer of claim 6 represented by the formula: ##STR8## wherein R"0 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)
US3317483A
Cited
GB1054018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |