Patent US3950398A successfully refreshed from Google Patents.
US3950398A
Expired / Lapsed
US
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Methacrylic acid addition salt of 2-mono(lower)alkyl amino ethyl methacrylate
Assignee: Normac Inc
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Filing: 1973-11-05
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Granted: 1976-04-13
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Expires: 1993-11-05
Abstract
Abstract Water-soluble, polymerizable, acid addition salts of methacrylic acid and 2-mono-(lower)alkylanimoethyl methacrylate whose lower alkyl group is straight or branched chain or cyclic and has up to about 6 carbon atoms, said addition salt includes its methacrylic acid and methacrylate components in the ratio of from about one mole to about 1.5 moles of one of them per mole of the other.
Inventors
- 👤 Max Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:47
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C07; C07C; C07C57/00; C07C57/02; C07C57/03; C07C57/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
54 words
A solid, water-soluble polymerizable methacrylic acid addition salt of a 2-mono(lower)alkylaminoethyl methacrylate wherein (a) alkyl has up to about 6 carbon atoms and (b) the methacrylic acid and the 2-mono(lower)alkylaminoethyl methacrylate components are present in said salt in the ratio of from one to about 1.5 moles of one per mole of the other.
Claim 2
Dependent Claim
54 words
A solid, water-soluble polymerizable methacrylic acid addition salt of a 2-mono(lower)alkylaminoethyl methacrylate wherein (a) alkyl has up to about 6 carbon atoms and (b) the methacrylic acid and the 2-mono(lower)alkylaminoethyl methacrylate components are present in said salt in the ratio of from one to about 1.5 moles of one per mole of the other.
Claim 3
Dependent Claim
35 words
A methacrylic acid addition salt as claimed in claim 1, wherein said methacrylic acid and methacrylate components are present in said salt in equimolar ratio and said addition salt is an equimolar acid addition salt.
Claim 4
Dependent Claim
18 words
The acid addition salt as claimed in claim 2, wherein said methacrylic acid component is glacial methacrylic acid.
Claim 5
Dependent Claim
41 words
The acid addition salt as claimed in claim 3, wherein said methacrylate component is a 2-(mono-butylamino)ethyl methacrylate, said product being opaque, tough yet frangible, soluble in methanol, acetone, methyl ethyl ketone, said styrene, and insoluble in pentane, hexane, cyclopentane, and cyclohexane.
Claim 6
Dependent Claim
16 words
The acid addition salt as claimed in claim 4, wherein said methacrylate component is 2-(mono-tertiary-butylamino)ethyl methacrylate.
Claim 7
Dependent Claim
40 words
The acid addition salt as claimed in claim 1, wherein the methacrylic acid component and the alkylaminoethyl methacrylate component are present in it in unequal-molar ratio to one another, whereby said solid addition salt is an unequal-molar acid addition salt.
Claim 8
Dependent Claim
31 words
The acid addition salt as claimed in claim 6, wherein said methacrylate component exceeds the methacrylic acid component and said solid addition salt thereby is an excess-ester unequal-molar acid addition salt.
Claim 9
Dependent Claim
19 words
The excess-ester unequal-molar acid addition salt as claimed in claim 7, wherein said methacrylate component is a 2-(mono-butylamino)ethyl methacrylate.
Claim 10
Dependent Claim
25 words
The excess-ester unequal-molar acid addition salt as claimed in claim 8, wherein said butylaminoethyl methacrylate component is 2-(mono-tertiary-butylamino)ethyl methacrylate and said salt is waxy appearing.
Claim 11
Dependent Claim
45 words
The acid addition salt as claimed in claim 6, wherein said methacrylic acid and methacrylate components are present in said salt in unequal molar-ratio with said methacrylic acid component exceeding the methacrylate component, whereby said solid addition salt is an excess-acid unequal-molar acid addition salt.
Claim 12
Dependent Claim
19 words
The excess-acid unequal-molar acid addition salt as claimed in claim 10, wherein said methacrylate component is a 2-(mono-butylamino)ethyl methacrylate.
Claim 13
Dependent Claim
19 words
The excess-acid unequal-molar acid addition salt as claimed in claim 11, wherein said butylaminoethyl methacrylate component is 2-(mono-tertiary-butylamino)ethyl methacrylate.
Claim 14
Dependent Claim
118 words
The method of preparing an equimolar acid addition salt as claimed in claim 3, wherein (i) a solid excess-acid unequal-molar acid addition salt having at least about 5 mole percent excess of its methacrylic acid component and (ii) a solid excess-ester unequal-molar acid addition salt having the same mole percent excess of its alkylaminoethyl methacrylate component as the mole percent excess of methacrylic acid in said excess-acid unequalmolar acid addition salt, are admixed and agitated to reduce their original starting size, and the agitation of their admixture is continued until their mixture, heated by the released heat of reaction, is converted by the agitation substantially completely to the equimolar acid addition salt in free-running finely divided particle size.
Claim 15
Dependent Claim
15 words
The method as claimed in claim 13, wherein said alkylaminoethyl methacrylate is a 2-(mono-butylamino)ethyl methacrylate.
Claim 16
Dependent Claim
14 words
The method as claimed in claim 14, wherein said butylaminoethyl methacrylate is 2-(mono-tertiary-butylamino)ethyl methacrylate.
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) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |