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US4818798A
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Polymer blend of carbon monoxide/olefin copolymer and copolyester elastomer
Assignee: Shell USA Inc
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Filing: 1988-06-20
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Granted: 1989-04-04
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Expires: 2008-06-20
Abstract
Abstract Blends of (a) a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and (b) a thermoplastic copolyester thermoplastic polymer having either linkages in one recurring unit of the polymeric chain, exhibit high surface gloss and improved processability without deterioration in impact strength.
Inventors
- 👤 William P. Gergen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:35
CPC Classifications
C; C08; C08L; C08L73/00; C08L67/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
46 words
A composition comprising a non-miscible blend of, as a major component, a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and, as a minor component, a thermoplastic copolyester elastomer polymer having ether linkages within one recurring segment of the polymer chain.
Claim 2
Dependent Claim
46 words
A composition comprising a non-miscible blend of, as a major component, a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and, as a minor component, a thermoplastic copolyester elastomer polymer having ether linkages within one recurring segment of the polymer chain.
Claim 3
Dependent Claim
51 words
The composition of claim 1 wherein the linear alternating polymer is represented by the repeating formula --CO--(CH.sub.2 --CH.sub.2)].sub.x [CO--(G)].sub.y wherein G is the moiety of an ethylenically unsaturated hydrocarbon of at least 3 carbon atoms polymerized through the ethylenic unsaturation and the ratio of y:x is no more than about 0.5.
Claim 4
Dependent Claim
121 words
The composition of claim 2 wherein the copolyester polymer comprises recurring long chain ester units of the formula ##STR4## and recurring short chain ester units of the formula ##STR5## wherein R is the divalent radical derived from exclusion of the carboxyl groups of a dicarboxylic acid having a molecular weight below about 300; R' is a divalent radical derived by exclusion of the terminal hydroxyl groups from a poly(alkylene oxide) glycol having a carbon to oxygen ratio of from about 2.5 to about 4.3, a molecular weight above about 400 and a melting point below about 60° C.; and R" is a divalent radical derived by exclusion of the hydroxy groups of a diol having a molecular weight below about 250.
Claim 5
Dependent Claim
7 words
The composition of claim 3 wherein y=0.
Claim 6
Dependent Claim
24 words
The composition of claim 3 wherein G is the moiety of propylene and the ratio of y:x is from about 0.01 to about 0.1.
Claim 7
Dependent Claim
15 words
The composition of claim 5 wherein at least 80% of the R units are 1,4-phenylene.
Claim 8
Dependent Claim
15 words
The composition of claim 6 wherein at least 80% of the R" units are tetramethylene.
Claim 9
Dependent Claim
15 words
The composition of claim 7 wherein the alkylene portion of the R' units are tetramethylene.
Claim 10
Dependent Claim
37 words
The composition of claim 3 wherein the copolyester polymer has the formula ##STR6## where a and b are independently integers of 1 to about 100 and n is an integer of at least 5 to about 50.
Claim 11
Dependent Claim
23 words
The composition of claim 9 wherein G is the moiety of propylene and the ratio y:x is from about 0.01 to about 0.1.
Claim 12
Dependent Claim
9 words
The composition of claim 9 wherein y is 0.
References Cited (Backward Citations)
US4642326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |