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US4447628A
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Nonhygroscopic, anionic pentacoordinate silicate
Assignee: EIDP Inc
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Filing: 1982-07-12
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Granted: 1984-05-08
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Expires: 2002-07-12
Abstract
Abstract Nonhygroscopic, anionic pentacoordinate silicate, for example, ##STR1## soluble in commonly used organic solvents, and useful as a source of fluoride, cyanide or azide anion and as a catalyst or cocatalyst in polymerization systems, for example, the polymerization of methyl methacrylate.
Inventors
- 👤 William B. Farnham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:04
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/42; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
Nonhygroscopic, anionic, pentacoordinate silicate of the formula ##STR12## wherein R 1 and R 2 are both aryl or one is aryl and the other is C 1-4 alkyl, or R 1 and R 2 taken together are ##STR13## Y is CF 3 or, when R 1 and R 2 are taken together, CH 3 ; X is F, CN or N 3 when Y is CF 3 ; X is F when Y is CH 3 ; M.sup.⊕ is (R 3 ) 4 N.sup.⊕, [(R 4 ) 2 N] 3 S.sup.⊕ or Cs.sup.⊕ when X is F; M.sup.⊕ is (R 5 ) 4 N.sup.⊕ when X is CN; M.sup.⊕ is [(R 4 ) 2 N] 3 S.sup.⊕ or (R 5 ) 4 N.sup.⊕ when X is N 3 ; aryl is phenyl, phenyl substituted with F or C 1-4 alkyl, C 1-4 alkoxy or naphthyl; R 3 is C 1-4 alkyl; R 4 is C 1-2 alkyl or (R 4 ) 2 is --CH 2 -- 5 ; and R 5 is C 2-4 alkyl.
Claim 2
Dependent Claim
175 words
Nonhygroscopic, anionic, pentacoordinate silicate of the formula ##STR12## wherein R 1 and R 2 are both aryl or one is aryl and the other is C 1-4 alkyl, or R 1 and R 2 taken together are ##STR13## Y is CF 3 or, when R 1 and R 2 are taken together, CH 3 ; X is F, CN or N 3 when Y is CF 3 ; X is F when Y is CH 3 ; M.sup.⊕ is (R 3 ) 4 N.sup.⊕, [(R 4 ) 2 N] 3 S.sup.⊕ or Cs.sup.⊕ when X is F; M.sup.⊕ is (R 5 ) 4 N.sup.⊕ when X is CN; M.sup.⊕ is [(R 4 ) 2 N] 3 S.sup.⊕ or (R 5 ) 4 N.sup.⊕ when X is N 3 ; aryl is phenyl, phenyl substituted with F or C 1-4 alkyl, C 1-4 alkoxy or naphthyl; R 3 is C 1-4 alkyl; R 4 is C 1-2 alkyl or (R 4 ) 2 is --CH 2 -- 5 ; and R 5 is C 2-4 alkyl.
Claim 3
Dependent Claim
38 words
Silicate of claim 1 wherein, in the formula, R 1 is methyl, R 2 is phenyl, X is F, Y is CF 3 and M.sup.⊕ is [(R 4 ) 2 N] 3 S.sup.⊕ wherein R 4 is methyl.
Claim 4
Dependent Claim
36 words
Silicate of claim 1 wherein, in the formula, R 1 is methyl, R 2 is phenyl, X is CN, Y is CF 3 and M.sup.⊕ is (R 5 ) 4 N.sup.⊕ wherein R 5 is ethyl.
Claim 5
Dependent Claim
38 words
Silicate of claim 1 wherein, in the formula, R 1 and R 2 are both phenyl, X is F, Y is CF 3 and M.sup.⊕ is [(R 4 ) 2 N] 3 S.sup.⊕ wherein R 4 is methyl.
Claim 6
Dependent Claim
36 words
Silicate of claim 1 wherein, in the formula, R 1 and R 2 are both phenyl, X is CN, Y is CF 3 and M.sup.⊕ is (R 5 ) 4 N.sup.⊕ wherein R 5 is ethyl.
Claim 7
Dependent Claim
40 words
Silicate of claim 1 wherein, in the formula, R 1 and R 2 are both phenyl, X is N 3 , Y is CF 3 and M.sup.⊕ is [(R 4 ) 2 N] 3 S.sup.⊕ wherein R 4 is methyl.
Claim 8
Dependent Claim
41 words
Silicate of claim 1 wherein, in the formula, R 1 and R 2 are taken together and are ##STR14## X is F, Y is CH 3 and M.sup.⊕ is [(R 4 ) 2 N] 3 S.sup.⊕ wherein R 4 is methyl.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |