US3670045A
Expired / Lapsed
US
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Aba block polymers of polylactones and polyethers
Assignee: Union Carbide Corp
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Filing: 1970-12-30
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Granted: 1972-06-13
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Expires: 1990-12-30
Abstract
Abstract The invention relates to novel, solid, substantially waterinsoluble ABA block polymers in which the A blocks comprise recurring linear lactone units and the B block comprises recurring oxyethylene units. The block polymers have utility as plasticizers for polyvinyl chloride resins, as surfactants, and as dye assists for polypropylene fiber.
Inventors
- 👤 Joseph Victor Koleske
- 👤 Rene Marie-Joseph Roberts
- 👤 Frank Paul Del Giudice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:25
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08G; C08G63/00; C08G63/66; C08G63/664; C08K; C08K3/00; C08K3/01; C08K3/014; C08L23/10; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L53/00; C08L67/00; C08L67/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
29 words
The solid block polymers of claim 1 wherein the variable m is a number such that has an average molecular weight of from about 3,000 to about 15, 000.
Claim 2
Dependent Claim
17 words
The solid block polymers of claim 2 wherein the R'' substituent in the B block represents hydrogen.
Claim 3
Dependent Claim
19 words
The solid block polymers of claim 3 wherein the A blocks are characterized by the recurring unit shown below:
Claim 4
Dependent Claim
19 words
The solid block polymers of claim 4 wherein the organic diepoxy compound is di(epoxyalkyl) diether of a dihydric phenol
Claim 5
Dependent Claim
21 words
The solid block polymErs of claim 5 wherein said di(epoxyalkyl) diether of a dihydric phenol is the diglycidyl diether of 2,2-bis(4-hydroxyphenyl)propane.
Claim 6
Dependent Claim
39 words
The solid block polymers of claim 5 wherein the variable m is a number such that has an average molecular weight of from about 4,000 to about 8, 000 and wherein the variable y has a value of two.
References Cited (Backward Citations)
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US3203920A
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US3382210A
Cited
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US3404018A
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |