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EP0004651A2
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The use of ethylene hydrocarbon copolymers for molding purposes
Assignee: Union Carbide Corp
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Filing: 1979-03-30
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Granted: —
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Expires: 1999-03-30
Abstract
Abstract An article molded from ethylene hydrocarbon copolymers, which articles have superior stress crack resistance and low temperature toughness.This application is a Continuation-In-Part of copending application Serial No. 892,323 filed March 31, 1978.
Inventors
- 👤 Frederick John Karol
- 👤 George Leonard Goeke
- 👤 Burkhard Eric Wagner
- 👤 William Allen Fraser
- 👤 Robert James Jorgensen
- 👤 Nils Friis
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 08:14
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/16; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0807; C08L23/0815
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
49 words
A molded article comprising low density ethylene hydrocarbon copolymer wherein said copolymer has: a Mw/Mn in the range of from about 2.7 to about 4.1; a total unsaturation group content of from about 0.1 to 0.3 C=C/1000 C atoms; and a density of about ≥ 0.91 to < 0.94.
Claim 2
Dependent Claim
49 words
A molded article comprising low density ethylene hydrocarbon copolymer wherein said copolymer has: a Mw/Mn in the range of from about 2.7 to about 4.1; a total unsaturation group content of from about 0.1 to 0.3 C=C/1000 C atoms; and a density of about ≥ 0.91 to < 0.94.
Claim 3
Dependent Claim
21 words
A molded article as in claim 1 wherein said copolymer has a melt flow-ratio of about > 22 to < 32.
Claim 4
Dependent Claim
48 words
A molded article comprising low density ethylene hydrocarbon copolymer wherein said copolymer has: a melt flow ratio of about ≥ 22 to ≤ 32; a total unsaturation group content of from about 0.1 to 0.3 C=C/1000 C atoms; and a density of about ≥ 0.9 to < 0.94.
Claim 5
Dependent Claim
48 words
A molded article comprising low density ethylene hydrocarbon copolymer wherein said copolymer has: a melt flow ratio of about ≥ 22 to ≤ 32; a total unsaturation group content of from about 0.1 to 0.3 C=C/1000 C atoms; and a density of about ≥ 0.9 to < 0.94.
Claim 6
Dependent Claim
19 words
A flexible injection molded article having a secant modulus of ≤ 80,000 psi comprising low density ethylene hydrocarbon copolymer.
Claim 7
Dependent Claim
19 words
A flexible injection molded article having a secant modulus of ≤ 80,000 psi comprising low density ethylene hydrocarbon copolymer.
Claim 8
Dependent Claim
15 words
A flexible injection molded article as in claim 4 in the form of a lid.
Claim 9
Dependent Claim
13 words
A flexible injected molded article as in claim 4 having a molded hinge.
Claim 10
Dependent Claim
29 words
A molded article as in claim 4 wherein said copolymer has: a density of > 0.918 to < 0.935, and a melt index of > 2 to ≤ 80.
Claim 11
Dependent Claim
48 words
A molded article as in claim 7 wherein said copolymer has a Mw/Mn in the range of from about 2.7 to about 4.1, a total unsaturation group content of from about 0.1 to 0.3 C=C/1000 atoms, and a melt flow ratio of about ≥ 5 22 to 32.
Claim 12
Dependent Claim
21 words
A rotomolded article comprising an ethylene hydrocarbon copolymer having a secant modulus of from about 30,000 psi to about 80,000 psi.
Claim 13
Dependent Claim
21 words
A rotomolded article comprising an ethylene hydrocarbon copolymer having a secant modulus of from about 30,000 psi to about 80,000 psi.
Claim 14
Dependent Claim
29 words
A rotomolded article as in claim 9 wherein said copolymer has: a density of > 0.918 to < 0.940; and a melt index of > 1 to < 100.
References Cited (Backward Citations)
No citation records indexed.
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