US4546152A
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Poly(p-dioxanone) polymers having improved radiation resistance
Assignee: Ethicon Inc
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Filing: 1984-03-07
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Granted: 1985-10-08
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Expires: 2004-03-07
Abstract
Abstract An absorbable, radiation sterilizable, normally solid polymer comprising a copolyester that comprises repeating divalent units of the formulas: (A) --O--CO--CH 2 --O--CH 2 CH 2 --, and (B) --G--, and (C) --O--CO--CHR--O-- m Ph--O--CHR--CO--O-- wherein G represents the residue after removal of the hydroxyl groups of a dihydric alcohol, wherein Ph represents 1,2-, 1,3-, or 1,4-phenylene or alkyl- or alkoxy-substituted phenylene, wherein m represents a number having a value of 0 or 1, wherein R represents hydrogen or lower alkyl, and wherein the divalent units (A), (B), and (C) are bonded to each other through ester groups contained in said units.
Inventors
- 👤 Donald F. Koelmel
- 👤 Dennis D. Jamiolkowski
- 👤 Shalaby W. Shalaby
- 👤 Rao S. Bezwada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:06
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/672; A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L17/105; A61L27/00; A61L27/14; A61L27/18
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
126 words
An absorbable, radiation sterilizable, normally solid polymer comprising a copolyester that comprises repeating divalent units of the formulas: (A) --O--CO--CH 2 --O--CH 2 CH 2 , and (B) --G--, and (C) --O--CO--CHR--O) m Ph--O--CHR--CO--O-- wherein G represents the residue after removal of the hydroxyl groups of a dihydric alcohol, wherein Ph represents 1,2-, 1,3-, or 1,4- phenylene or alkyl- or alkoxy-substituted phenylene, wherein m represents a number having a value of 0 or 1, wherein each R individually represents hydrogen or lower alkyl, and wherein the divalent units (A), (B), and (C) are bonded to each other through ester groups contained in said units, wherein said polymer is produced by reacting p-dioxanone with a polyester comprising the repeating divalent units (B) and (C) as defined above.
Claim 2
Dependent Claim
126 words
An absorbable, radiation sterilizable, normally solid polymer comprising a copolyester that comprises repeating divalent units of the formulas: (A) --O--CO--CH 2 --O--CH 2 CH 2 , and (B) --G--, and (C) --O--CO--CHR--O) m Ph--O--CHR--CO--O-- wherein G represents the residue after removal of the hydroxyl groups of a dihydric alcohol, wherein Ph represents 1,2-, 1,3-, or 1,4- phenylene or alkyl- or alkoxy-substituted phenylene, wherein m represents a number having a value of 0 or 1, wherein each R individually represents hydrogen or lower alkyl, and wherein the divalent units (A), (B), and (C) are bonded to each other through ester groups contained in said units, wherein said polymer is produced by reacting p-dioxanone with a polyester comprising the repeating divalent units (B) and (C) as defined above.
Claim 3
Dependent Claim
9 words
The polymer of claim 1 wherein Ph represents 1,4-phenylene.
Claim 4
Dependent Claim
9 words
The polymer of claim 1 wherein Ph represents 1,3-phenylene.
Claim 5
Dependent Claim
19 words
The polymer of claim 1, 2, or 3 wherein G represents polymethylene of from 3 to 6 carbon atoms.
Claim 6
Dependent Claim
12 words
The polymer of claim 1, 2, or 3 wherein m is zero.
Claim 7
Dependent Claim
9 words
The polymer of claim 4 wherein m is zero.
Claim 8
Dependent Claim
12 words
The polymer of claim 1, 2, or 3 wherein m is one.
Claim 9
Dependent Claim
9 words
The polymer of claim 4 wherein m is one.
Claim 10
Dependent Claim
14 words
The polymer of claim 1 wherein the divalent units are of the formula: ##STR8##
Claim 11
Dependent Claim
14 words
The polymer of claim 1 wherein the divalent units are of the formula: ##STR9##
Claim 12
Dependent Claim
14 words
The polymer of claim 1 wherein the divalent units are of the formula: ##STR10##
Claim 13
Dependent Claim
22 words
The polymer of claim 1 wherein the divalent units (A) constitute from about 59 to about 99 weight percent of the copolyester.
Claim 14
Dependent Claim
22 words
The polymer of claim 1 wherein the divalent units (A) constitute from about 75 to about 90 weight percent of the copolyester.
Claim 15
Dependent Claim
19 words
The polymer of claim 1, 2, 3, 9, 10, 11, 12, or 13 in the form of a fiber.
Claim 16
Dependent Claim
11 words
The polymer of claim 4 in the form of a fiber.
Claim 17
Dependent Claim
11 words
The polymer of claim 5 in the form of a fiber.
Claim 18
Dependent Claim
11 words
The polymer of claim 6 in the form of a fiber.
Claim 19
Dependent Claim
11 words
The polymer of claim 7 in the form of a fiber.
Claim 20
Dependent Claim
11 words
The polymer of claim 8 in the form of a fiber.
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) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |