Patent US3875257A successfully refreshed from Google Patents.
US3875257A
Expired / Lapsed
US
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Brominated bisphenol A diethanol polyformal
Assignee: Eastman Kodak Co
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Filing: 1973-11-30
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Granted: 1975-04-01
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Expires: 1993-11-30
Abstract
Abstract WHERE N IS 1 OR 2. This polyformal can be formed into a moldable or fiber-forming composition comprising an admixture of from 75 to 98 weight percent polyester and from 25 to 2 weight percent of the polyformal. The admixture of the polyester and the polyformal can, depending on the precise conditions of time, temperature and pressure, form, in whole or in part, a copolymer of blocks of polyester and blocks of polyformal. The admixture, the block copolymer or a combination of the two can be formed into useful articles. Disclosed is a brominated bisphenol A diethanol polyformal comprised of recurring units of the structure
Inventors
- 👤 Harry R Musser
- 👤 Winston J Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:07
CPC Classifications
C; C08; C08G; C08G4/00; C08G81/00; C08L; C08L67/00; C08L67/02; D; D01; D01F; D01F6/00; D01F6/88; D01F6/92; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S8/00; Y10S8/04
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
102 words
A MOLDABLE OR FIBER-FORMING COMPOSITION CONSISTING ESSENTIALLY OF AN ADMIXTURE OF A. BASED ON THE WEIGHT OF THE COMPOSITION, FROM 75 TO 98 WEIGHT PERCENT POLYESTER, SAID POLYESTER BEING THE CONDENSATION PRODUCT OF AT LEAST ONE ALIPHATIC OR ALICYCLIC DIOL CONTAINING 2 TO 40 CARBON ATOMS AND AT LEAST ONE ALIPHATIC, ALICYCLIC OR AROMATIC DICARBOXYLIC ACID OR ESTER THEREOF HAVING 3 TO 40 CARBON ATOMS AND B. BASED ON THE WEIGHT OF THE COMPOSITION, FROM 25 TO 2 WEIGHT PERCENT OF A POLYMER HAVING AN INHERENT VISCOSITY IN THE RANGE OF 0.03 TO 1.0 CONSISTING ESSENTIALLY OF RECURRING UNITS OF THE STRUCTURE
Claim 2
Dependent Claim
102 words
A MOLDABLE OR FIBER-FORMING COMPOSITION CONSISTING ESSENTIALLY OF AN ADMIXTURE OF A. BASED ON THE WEIGHT OF THE COMPOSITION, FROM 75 TO 98 WEIGHT PERCENT POLYESTER, SAID POLYESTER BEING THE CONDENSATION PRODUCT OF AT LEAST ONE ALIPHATIC OR ALICYCLIC DIOL CONTAINING 2 TO 40 CARBON ATOMS AND AT LEAST ONE ALIPHATIC, ALICYCLIC OR AROMATIC DICARBOXYLIC ACID OR ESTER THEREOF HAVING 3 TO 40 CARBON ATOMS AND B. BASED ON THE WEIGHT OF THE COMPOSITION, FROM 25 TO 2 WEIGHT PERCENT OF A POLYMER HAVING AN INHERENT VISCOSITY IN THE RANGE OF 0.03 TO 1.0 CONSISTING ESSENTIALLY OF RECURRING UNITS OF THE STRUCTURE
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein (A) is from 80 to 92 weight percent and (B) is from 20 to 8 weight percent.
Claim 4
Dependent Claim
24 words
The composition of claim 2 wherein n is 2 and both bromine atoms are in the ortho position with regard to the oxygen atoms.
Claim 5
Dependent Claim
16 words
The composition of claim 3 wherein the polyester is poly(ethylene terephthalate), poly(tetramethylene terephthalate) or poly(1,4-cyclohexylenedimethylene terephthalate).
Claim 6
Dependent Claim
90 words
based on the weight of the admixture, from 75 to 98 weight percent polyester, said polyester being the condensation product of at least one aliphatic or alicyclic diol containing 2 to 40 carbon atoms and at least one aliphatic, alicyclic or aromatic dicarboxylic acid or ester thereof having 3 to 40 carbom atoms and B. based on the weight of the admixture, from 25 to 2 weight percent of a polymer having an inherent viscosity in the range of 0.03 to 1.0 consisting essentially of recurring units of the structure
Claim 7
Dependent Claim
90 words
based on the weight of the admixture, from 75 to 98 weight percent polyester, said polyester being the condensation product of at least one aliphatic or alicyclic diol containing 2 to 40 carbon atoms and at least one aliphatic, alicyclic or aromatic dicarboxylic acid or ester thereof having 3 to 40 carbom atoms and B. based on the weight of the admixture, from 25 to 2 weight percent of a polymer having an inherent viscosity in the range of 0.03 to 1.0 consisting essentially of recurring units of the structure
Claim 8
Dependent Claim
11 words
The composition of claim 4 wherein the polyester is poly(tetramethylene terephthalate).
Claim 9
Dependent Claim
9 words
A textile fiber consisting essentially of an admixture of
Claim 10
Dependent Claim
9 words
A textile fiber consisting essentially of an admixture of
Claim 11
Dependent Claim
23 words
The fiber of claim 6 wherein (A) is from 80 to 92 weight percent and (B) is from 20 to 8 weight percent.
Claim 12
Dependent Claim
24 words
The fiber of claim 7 wherein n is 2 and both bromine atoms are in the othro position with regard to the oxygen atom.
Claim 13
Dependent Claim
108 words
A copolymer having an inherent viscosity of at least 0.35 consisting essentially of A. based on the weight of the composition, from 75 to 98 weight percent blocks of a polyester, said polyester being the condensation product of at least one aliphatic or alicyclic diol containing 2 to 40 carbon atoms and at least one aliphatic, alicyclic or aromatic dicarboxylic acid or ester thereof having 3 to 40 carbon atoms, and B. based on the weight of the composition, from 25 to 2 weight percent blocks of a polyformal having an inherent viscosity in the range of 0.03 to 1.0 consisting essentially of recurring units of the structure
Claim 14
Dependent Claim
108 words
A copolymer having an inherent viscosity of at least 0.35 consisting essentially of A. based on the weight of the composition, from 75 to 98 weight percent blocks of a polyester, said polyester being the condensation product of at least one aliphatic or alicyclic diol containing 2 to 40 carbon atoms and at least one aliphatic, alicyclic or aromatic dicarboxylic acid or ester thereof having 3 to 40 carbon atoms, and B. based on the weight of the composition, from 25 to 2 weight percent blocks of a polyformal having an inherent viscosity in the range of 0.03 to 1.0 consisting essentially of recurring units of the structure
Claim 15
Dependent Claim
23 words
The copolymer of claim 9 wherein (A) is from 80 to 92 weight percent and (B) is from 20 to 8 weight percent.
Claim 16
Dependent Claim
24 words
The copolymer of claim 10 wherein n is 2 and both bromine atoms are in the ortho position with regard to the oxygen atom.
Claim 17
Dependent Claim
14 words
The copolymer of claim 11 wherein the polyester is poly(ethylene terephthalate) or poly(tetramethylene terephthalate).
Claim 18
Dependent Claim
115 words
A textile fiber formed from a copolymer having an inherent viscosity of at least 0.35, the copolymer consisting essentially of A. based on the weight of the copolymer, from 75 to 98 weight percent blocks of a polyester, said polyester being the condensation product of at least one aliphatic or alicyclic diol containing 2 to 40 carbon atoms and at least one aliphatic, alicyclic or aromatic dicarboxylic acid or ester thereof having 3 to 40 carbon atoms, and B. based on the weight of the copolymer, from 25 to 2 weight percent blocks of a polyformal having an inherent viscosity in the range of 0.03 to 1.0 consisting essentially of recurring units of the structure
Claim 19
Dependent Claim
115 words
A textile fiber formed from a copolymer having an inherent viscosity of at least 0.35, the copolymer consisting essentially of A. based on the weight of the copolymer, from 75 to 98 weight percent blocks of a polyester, said polyester being the condensation product of at least one aliphatic or alicyclic diol containing 2 to 40 carbon atoms and at least one aliphatic, alicyclic or aromatic dicarboxylic acid or ester thereof having 3 to 40 carbon atoms, and B. based on the weight of the copolymer, from 25 to 2 weight percent blocks of a polyformal having an inherent viscosity in the range of 0.03 to 1.0 consisting essentially of recurring units of the structure
Claim 20
Dependent Claim
24 words
The textile fiber of claim 13 wherein (A) is from 80 to 92 weight percent and (B) is from 20 to 8 weight percent.
Claim 21
Dependent Claim
25 words
The textile fiber of claim 14 wherein n is 2 and both bromine atoms are in the ortho position with regard to the oxygen atom.
Claim 22
Dependent Claim
12 words
The textile fiber of claim 15 wherein the polyester is poly(ethylene terephthalate).
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |