US20030197302A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic olefin composition, process for making the composition and method for negative vacuum forming articles therefrom
Assignee: Delphi Technologies Inc
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Filing: 2002-04-17
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Granted: —
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Expires: 2022-04-17
Abstract
Abstract A thermoplastic olefin composition comprises, based on the total weight of the composition: about 20 wt % to about 40 wt % polypropylene; about 30 wt % to about 50 wt % ethylene copolymer; and about 20 wt % to about 30 wt % linear low density polyethylene. A process for negative or female vacuum forming an article comprises: mixing, based upon the total weight of the blend, about 20 wt % to about 40 wt % polypropylene, about 30 wt % to about 50 wt % ethylene copolymer, about 20 wt % to about 30 wt % linear low density polyethylene, and about 0.02 wt % to about 1 wt % to form a blend. The blend is formed into a sheet, disposed in a mold, and vacuum formed into the article.
Inventors
- 👤 Srimannarayana Kakarala
- 👤 Jason Clock
- 👤 Marty Skirha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:02
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/002; B29C48/00; B29C48/03; B29C48/07; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0815; C08L23/10; B29C48/022; B29C51/04; B29C51/08; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/0608; B29K2023/0625; B29K2023/10; B29K2023/12; B29K2023/16; B29K2105/00; B29K2105/0005; B29K2105/0032; B29K2105/0044; B29K2105/26; B29K2995/00; B29K2995/0037; B29K2995/0082; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3008; B29L2031/3014; B29L2031/302; C08L23/16
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
50 words
1 . A thermoplastic olefin composition, comprising, based on the total weight of the composition: about 20 wt % to about 40 wt % polypropylene; about 30 wt % to about 50 wt % ethylene copolymer; and about 20 wt % to about 30 wt % linear low density polyethylene.
Claim 2
Dependent Claim
50 words
1 . A thermoplastic olefin composition, comprising, based on the total weight of the composition: about 20 wt % to about 40 wt % polypropylene; about 30 wt % to about 50 wt % ethylene copolymer; and about 20 wt % to about 30 wt % linear low density polyethylene.
Claim 3
Dependent Claim
22 words
2 . The composition of claim 1 , further comprising about 25 wt % to about 30 wt % of the polyethylene.
Claim 4
Dependent Claim
44 words
3 . The composition of claim 1 , wherein the polypropylene, the ethylene copolymer, and the linear low density polyethylene each have a melt index of less than or equal to about 1 g/10 min. measured at 230° C., employing a 2.16 kg weight.
Claim 5
Dependent Claim
31 words
4 . The composition of claim 1 , further comprising about 0.5 wt % to about 10 wt % color additive, based upon the total weight of the thermoplastic olefin composition.
Claim 6
Dependent Claim
23 words
5 . The composition of claim 4 , further comprising about 1 wt % to about 5 wt % of the color additive.
Claim 7
Dependent Claim
23 words
6 . The composition of claim 1 , further comprising about 30 wt % to about 70 wt % of the ethylene copolymer.
Claim 8
Dependent Claim
38 words
7 . The composition of claim 1 , wherein the ethylene copolymer further comprises EPDM, and wherein the EPDM comprises about 40 wt % to about 60 wt % ethylene, based on the total weight of the EPDM.
Claim 9
Dependent Claim
28 words
8 . The composition of claim 1 , further comprising about 0.05 to about 4 wt % stabilizers, based upon the total weight of the thermoplastic olefin composition.
Claim 10
Dependent Claim
32 words
9 . The composition of claim 1 , further comprising about 0.05 wt % to about 0.5 wt % free radical initiators, based upon the total weight of the thermoplastic olefin composition.
Claim 11
Dependent Claim
34 words
10 . The composition of claim 9 , further comprising about 0.1 wt % up to about 0.4 wt % of the free radical initiators, wherein the free radical initiators comprise an organic peroxide.
Claim 12
Dependent Claim
24 words
11 . The composition of claim 1 , further comprising about 0.05 wt % to about 0.5 wt % of a pre-radical controlling co-agent.
Claim 13
Dependent Claim
14 words
12 . The composition of claim 1 , wherein the co-agent comprises tri-methylolpropane trimethacryalate.
Claim 14
Dependent Claim
14 words
13 . An article of manufacture made from the composition of claim 1 .
Claim 15
Dependent Claim
32 words
14 . The article of manufacture of claim 13 , wherein the article of manufacture is selected from the group consisting of sheathing, instrument panel skins, airbag housing covers, and door trims.
Claim 16
Dependent Claim
63 words
15 . A process for preparing a thermoplastic olefin composition comprising: mixing about 20 wt % to about 40 wt % polypropylene, about 30 wt % to about 50 wt % ethylene copolymer, and about 20 wt % to about 30 wt % linear low density polyethylene to form a blend, based upon the total weight of the blend; and extruding the blend.
Claim 17
Dependent Claim
63 words
15 . A process for preparing a thermoplastic olefin composition comprising: mixing about 20 wt % to about 40 wt % polypropylene, about 30 wt % to about 50 wt % ethylene copolymer, and about 20 wt % to about 30 wt % linear low density polyethylene to form a blend, based upon the total weight of the blend; and extruding the blend.
Claim 18
Dependent Claim
15 words
16 . The process of claim 15 , wherein the mixing further comprises melt blending.
Claim 19
Dependent Claim
13 words
17 . The process of claim 16 , further comprising calendaring the blend.
Claim 20
Dependent Claim
15 words
18 . The process of claim 15 , wherein the mixing further comprises in-line compounding.
Claim 21
Dependent Claim
18 words
19 . The process of claim 15 , wherein sheet is embossed with a shallow geometric stiple grain.
Claim 22
Dependent Claim
34 words
20 . The process of claim 15 , further comprising mixing about 0.05 wt % to about 0.5 wt % free radical initiators, based upon the total weight of the blend, into the blend.
Claim 23
Dependent Claim
36 words
21 . The process of claim 20 , wherein the amount of free radical initiators is about 0.1 wt % up to about 0.4 wt %, and wherein the free radical initiators comprise an organic peroxide.
Claim 24
Dependent Claim
36 words
22 . The process of claim 15 , further comprising mixing about 0.05 wt % to about 0.5 wt % of a pre-radical controlling co-agent, based upon the total weight of the blend, into the blend.
Claim 25
Dependent Claim
80 words
23 . A process for female vacuum forming an article, comprising: mixing about 20 wt % to about 40 wt % polypropylene, about 30 wt % to about 50 wt % ethylene copolymer, and about 20 wt % to about 30 wt % linear low density polyethylene to form a blend, based upon a total weight of the blend; and forming a sheet from the blend; disposing the sheet in a mold; and vacuum forming the sheet into an article.
Claim 26
Dependent Claim
80 words
23 . A process for female vacuum forming an article, comprising: mixing about 20 wt % to about 40 wt % polypropylene, about 30 wt % to about 50 wt % ethylene copolymer, and about 20 wt % to about 30 wt % linear low density polyethylene to form a blend, based upon a total weight of the blend; and forming a sheet from the blend; disposing the sheet in a mold; and vacuum forming the sheet into an article.
Claim 27
Dependent Claim
90 words
24 . A thermoplastic olefin composition, comprising the reaction product of, based on the total weight of the composition: about 20 wt % to about 40 wt % polypropylene; about 30 wt % to about 50 wt % ethylene copolymer; and about 20 wt % to about 30 wt % linear low density polyethylene; wherein the polypropylene, the ethylene copolymer, and the linear low density polyethylene each have a melt index of less than or equal to about 1 g/10 min. measured at 230° C., employing a 2.16 kg weight.
Claim 28
Dependent Claim
90 words
24 . A thermoplastic olefin composition, comprising the reaction product of, based on the total weight of the composition: about 20 wt % to about 40 wt % polypropylene; about 30 wt % to about 50 wt % ethylene copolymer; and about 20 wt % to about 30 wt % linear low density polyethylene; wherein the polypropylene, the ethylene copolymer, and the linear low density polyethylene each have a melt index of less than or equal to about 1 g/10 min. measured at 230° C., employing a 2.16 kg weight.
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