US5723545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of a semi-crystalline polymer and elastic α-olefin/cyclic olefin copolymers
Assignee: ExxonMobil Chemical Patents Inc
•
Filing: 1996-11-04
•
Granted: 1998-03-03
•
Expires: 2016-11-04
Abstract
Abstract Blends of semi-crystalline polymers with rubbery thermoplastic copolymers are provided. The rubbery thermoplastic copolymers are elastic at temperatures above their Tg's and properties similar to thermoplastic elastomers and surface tensions 5 dynes/cm or more different, preferably greater than the surface tension of the semi-crystalline polymer. Improved properties include good elastic recovery, toughness, and high elasticity without significant loss in optical properties.
Inventors
- 👤 Bruce Allan Harrington
- 👤 Patrick Brant
- 👤 Anthony Jay Dias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:30
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08F; C08F210/00; C08F210/02; C08F232/00; C08F232/08; C08L23/12; C08L23/16; C08L2205/00; C08L2205/22; C08L2314/00; C08L2314/06
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
94 words
A blend comprising: (1) about 55 to about 99.5% by weight semi-crystalline polymer; and (2) about 0.5 to about 45% by weight of a rubbery thermoplastic copolymer comprising an α-olefin and from about 5 to about 30 mole % of cyclic olefin, said rubbery thermoplastic copolymer: (a) having an Mw of at least about 30,000; (b) being elastic over the range of temperatures between its Tg and about 100° C. above its Tg: and (c) having a surface tension that is 3 dynes/cm or more different from the surface tension of the semi-crystalline polymer.
Claim 2
Dependent Claim
94 words
A blend comprising: (1) about 55 to about 99.5% by weight semi-crystalline polymer; and (2) about 0.5 to about 45% by weight of a rubbery thermoplastic copolymer comprising an α-olefin and from about 5 to about 30 mole % of cyclic olefin, said rubbery thermoplastic copolymer: (a) having an Mw of at least about 30,000; (b) being elastic over the range of temperatures between its Tg and about 100° C. above its Tg: and (c) having a surface tension that is 3 dynes/cm or more different from the surface tension of the semi-crystalline polymer.
Claim 3
Dependent Claim
15 words
The blend of claim 1 wherein the α-olefin of the rubbery thermoplastic copolymer is ethylene.
Claim 4
Dependent Claim
15 words
The blend of claim 2 wherein the cyclic-olefin is norbornene, substituted norbornene or isomers thereof.
Claim 5
Dependent Claim
9 words
The blend of claim 1 further comprising a peroxide.
Claim 6
Dependent Claim
27 words
The blend of claim 1 wherein the rubbery thermoplastic copolymer has a surface tension 5 dynes/cm or more greater than the surface tension of the semi-crystalline copolymer.
Claim 7
Dependent Claim
21 words
The blend of claim 1 wherein the rubbery thermoplastic copolymer comprises ethylene and about 10 to about 30 mole % norbornene.
Claim 8
Dependent Claim
34 words
The blend of claim 1 wherein the cyclic olefin is one or more of cyclobutene, cyclopentene, deltacyclene, norbornene, methyl norbornene, tetracyclododecene, methyltetracyclododecene, dimethyltetracyclododecene, tricyclo(4.3.0.1 2 ,5)-3-decene, or pentacyclo(4.7.0.1 2 ,5.0 8 ,13.1 9 ,12)-3-pentadecene.
Claim 9
Dependent Claim
34 words
The blend of claim 1 wherein the semi-crystalline polymer is present at about 99.5 to about 75 weight percent and the rubbery thermoplastic copolymer is present at about 0.5 to about 25 weight percent.
Claim 10
Dependent Claim
8 words
An article comprising the blend of claim 1.
Claim 11
Dependent Claim
9 words
A molded part comprising the blend of claim 1.
Claim 12
Dependent Claim
8 words
An article comprising the blend of claim 4.
Claim 13
Dependent Claim
88 words
A molded article comprising a blend comprising: (1) about 75 to about 95.5 weight percent of semi-crystalline polymer; (2) about 25 to about 0.5 weight percent of a copolymer of ethylene and about 5 to about 30 mole % norbornene, said ethylene/norbornene copolymer being elastic over the range of temperatures between its Tg and about 100° C. above its Tg and said copolymer having a surface tension that is 5 dynes/cm or more greater than the surface tension of the semi-crystalline polymer; and (3) optionally, a curing agent.
Claim 14
Dependent Claim
88 words
A molded article comprising a blend comprising: (1) about 75 to about 95.5 weight percent of semi-crystalline polymer; (2) about 25 to about 0.5 weight percent of a copolymer of ethylene and about 5 to about 30 mole % norbornene, said ethylene/norbornene copolymer being elastic over the range of temperatures between its Tg and about 100° C. above its Tg and said copolymer having a surface tension that is 5 dynes/cm or more greater than the surface tension of the semi-crystalline polymer; and (3) optionally, a curing agent.
Claim 15
Dependent Claim
100 words
A process for producing a blend comprising physically admixing: (1) about 55 to about 99.5% by weight semi-crystalline polymer; with (2) about 0.5 to about 45% by weight of a rubbery thermoplastic copolymer of an α-olefin and from about 5 to about 30 mole % of cyclic olefin said rubbery thermoplastic copolymer: (a) having an Mw of at least about 30,000; (b) being elastic over the range of temperatures between its Tg and about 100° C. above its Tg; and (c) having a surface tension that is 3 dynes/cm or more greater than the surface tension of the semi-crystalline polymer.
Claim 16
Dependent Claim
100 words
A process for producing a blend comprising physically admixing: (1) about 55 to about 99.5% by weight semi-crystalline polymer; with (2) about 0.5 to about 45% by weight of a rubbery thermoplastic copolymer of an α-olefin and from about 5 to about 30 mole % of cyclic olefin said rubbery thermoplastic copolymer: (a) having an Mw of at least about 30,000; (b) being elastic over the range of temperatures between its Tg and about 100° C. above its Tg; and (c) having a surface tension that is 3 dynes/cm or more greater than the surface tension of the semi-crystalline polymer.
Claim 17
Dependent Claim
24 words
The process of claim 13 wherein the rubbery thermoplastic copolymer is a copolymer of ethylene and about 10 to about 30 mole % norbornene.
Claim 18
Dependent Claim
29 words
The process of claim 13 wherein the rubbery thermoplastic copolymer has a surface tension of about 5 dynes/cm or more greater than the surface tension of the semi-crystalline polymer.
Claim 19
Dependent Claim
29 words
The process of claim 13 wherein the rubbery thermoplastic copolymer has a surface tension of about 8 dynes/cm or more greater than the surface tension of the semi-crystalline polymer.
Claim 20
Dependent Claim
16 words
A blend according to claim 1 wherein the blend has been cross-linked by peroxide cure treatment.
Claim 21
Dependent Claim
27 words
The process of claim 13 wherein said rubbery thermoplastic copolymer is present in said blend in an amount of from about 1% to about 30% by weight.
Claim 22
Dependent Claim
22 words
The blend of claim 1 wherein said rubbery thermoplastic copolymer comprises from about 10 to about 20 mole % of cyclic olefin.
Claim 23
Dependent Claim
22 words
The process of claim 13 wherein said rubbery thermoplastic copolymer comprises from about 16 to about 20 mole % of cyclic olefin.
Claim 24
Dependent Claim
20 words
The blend of claim 1 wherein the rubbery thermoplastic copolymer comprises from about 10 to about 20 mole % norbornene.
References Cited (Backward Citations)
DE214623C
Cited
US2934527A
Cited
US3313786A
Cited
US3876595A
Cited
EP0203799A1
Cited
US4614788A
Cited
US5008356A
Cited
EP0283164B1
Cited
US4918133A
Cited
JPH0247157A
Cited
US5292811A
Cited
JPH02276816A
Cited
US4990559A
Cited
US5087677A
Cited
EP0407870B1
Cited
JPH0376911A
Cited
JPH03188145A
Cited
JPH03203945A
Cited
JPH03203950A
Cited
JPH03207755A
Cited
JPH03210348A
Cited
WO1992006123A1
Cited
EP0504418A1
Cited
EP0496193A1
Cited
WO1992016564A1
Cited
WO1992016585A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-02 | 2001-09-01 | 2002-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-02 | 2005-09-01 | 2006-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-02 | 2009-09-01 | 2010-03-03 | $7700.00 | Window Closed / Lapsed |