Patent US4373032A successfully refreshed from Google Patents.
US4373032A
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Metal salts of polyacetylenic compounds and uses thereof as ion exchange and thermochromic polymers
Assignee: Lifelines Technology Inc
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Filing: 1980-06-16
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Granted: 1983-02-08
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Expires: 2000-06-16
Abstract
Abstract Water-soluble polyacetylenic alkali metal salts from monomers and polymers of carboxymethyl urethanes of di-, tetra-, and hexayne diols, or from the corresponding diacids; useful in thermal and irradiation exposure indicators and/or in detection and/or removal of nonalkali metal ions dissolved in aqueous media.
Inventors
- 👤 Anthony F. Preziosi
- 👤 Gordhanbhai N. Patel
- 👤 Robert G. Denkewalter
- 👤 Ray H. Baughman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:27
CPC Classifications
C; C08; C08F; C08F38/00; B; B01; B01J; B01J39/00; B01J39/08; B01J39/16; B01J39/18; B01J39/20; C07; C07C; C07C29/00; C07C29/44; C07C29/62; C07C33/00; C07C33/04; C07C33/042; C07C33/044; C07C57/00; C07C57/18; C07C57/24; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/41; C22B3/44; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
133 words
A polymeric compound prepared by the 1,4 addition of a diacetylenic monomer of the formula [R(C.tbd.C) a (CH 2 ) b (C.tbd.C) b-1 ] 2 wherein a is 1 or 2 and b is 0 when a is 1; b is 0, 1, or 2 when a is 2 and (b-1) is taken as zero whenever b is zero; wherein R is selected from the group consisting of (I): --(CH 2 ) n O(C═O)NHCH 2 CO 2 M, n being an integer from 1 to 10 and M representing an alkali metal or hydrogen; and (II): --(CH 2 ) n' CO 2 M', n' being an integer from 0 to 9 and M' being an alkali metal with the proviso that when a is 1, n' is an integer from 0 to 4.
Claim 2
Dependent Claim
133 words
A polymeric compound prepared by the 1,4 addition of a diacetylenic monomer of the formula [R(C.tbd.C) a (CH 2 ) b (C.tbd.C) b-1 ] 2 wherein a is 1 or 2 and b is 0 when a is 1; b is 0, 1, or 2 when a is 2 and (b-1) is taken as zero whenever b is zero; wherein R is selected from the group consisting of (I): --(CH 2 ) n O(C═O)NHCH 2 CO 2 M, n being an integer from 1 to 10 and M representing an alkali metal or hydrogen; and (II): --(CH 2 ) n' CO 2 M', n' being an integer from 0 to 9 and M' being an alkali metal with the proviso that when a is 1, n' is an integer from 0 to 4.
Claim 3
Dependent Claim
25 words
Compound of claim 1 wherein a is 1, b and (b-1) are zero, and R is of formula I with n being 3 or 4.
Claim 4
Dependent Claim
10 words
Compound of claim 2 wherein M is potassium or sodium.
Claim 5
Dependent Claim
10 words
Compound of claim 2 being a cross-linked and water-insoluble polymer.
Claim 6
Dependent Claim
10 words
Polymer of claim 4 wherein M is potassium or sodium.
Claim 7
Dependent Claim
28 words
Compound of claim 1 wherein a is 2, b is 1 or 2, and R is a formula II with n' being an integer from 1 to 4.
Claim 8
Dependent Claim
28 words
Compound of claim 1 wherein a is 2, b and (b-1) are zero, and R is of formula II with n' being an integer from 1 to 4.
Claim 9
Dependent Claim
47 words
Process of ion exchange which comprises contacting an alkali metal salt of a polymer of claim 1 with an aqueous solution of a salt of a metal other than an alkali metal whereupon the salt of said polymer with said other metal precipitates from said aqueous solution.
Claim 10
Dependent Claim
16 words
Process of claim 8 wherein said salt of a polymer is the potassium or sodium salt.
Claim 11
Dependent Claim
69 words
Process of claim 8 wherein said polymer is formed by the 1,4 addition of a diacetylenic monomer of the formula [R-C.tbd.C) a (CH 2 ) b (C.tbd.C) b-1 ] 2 wherein a is 1, b is 0, b-1 is 0, and R is of the formula --(CH 2 ) n --O--(C═O)NHCH 2 CO 2 M where n is 3 or 4 with M being an alkali metal or hydrogen.
Claim 12
Dependent Claim
57 words
Process of claim 10 wherein the cation of said other metal in the precipitated polymer salt is brought into aqueous solution by contacting the polymer containing the same with aqueous acid; and the alkali metal salt form of the polymer is regenerated from the resulting residue of polymer in acid form by addition thereto of aqueous alkali.
Claim 13
Dependent Claim
50 words
A polymer according to claim 1 wherein said polymer is prepared by polymerizing said monomeric compound by irradiation or thermal annealing, which polymerization occurs by 1, 4 addition at one or more conjugated acetylenic functionalities, said polymer having a plurality of functionalities of the formula: ##STR5## within the polymer chain.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-07 | 1986-08-09 | 1987-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-07 | 1990-08-09 | 1991-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-07 | 1994-08-09 | 1995-02-08 | $7700.00 | Window Closed / Lapsed |