EP0120562A2
Expired / Lapsed
EP
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Elastomer, polypropylene blends for optically clear products
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1984-01-26
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Granted: —
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Expires: 2004-01-26
Abstract
Abstract Composition blends consisting essentially of an ethylene propylene elastomer and polypropylene, particularly a random polypropylene reactor copolymer, are very effective for forming optically clear products, particularly films.
Inventors
- 👤 Donald Ross Hazelton
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 19:28
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/14; C08L23/142; C08L23/16; C08L2205/00; C08L2205/02; C08L23/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
A composition blend capable of being formed into optically clear products consisting essentially of: (A) about 1 to 80 weight percent of an ethylene propylene elastomer having an ethylene content of at least 50 weight percent and a Mooney viscosity ML (1+8) at 127°C in the range of about 10 to 40; and (B) about 20 to 99 weight percent of a polypropylene polymer selected from the group consisting of polypropylene and random polypropylene reactor copolymer.
Claim 2
Dependent Claim
76 words
A composition blend capable of being formed into optically clear products consisting essentially of: (A) about 1 to 80 weight percent of an ethylene propylene elastomer having an ethylene content of at least 50 weight percent and a Mooney viscosity ML (1+8) at 127°C in the range of about 10 to 40; and (B) about 20 to 99 weight percent of a polypropylene polymer selected from the group consisting of polypropylene and random polypropylene reactor copolymer.
Claim 3
Dependent Claim
20 words
A blend according to claim 1, wherein the elastomer has an ethylene content of from 60 to 80 weight percent.
Claim 4
Dependent Claim
20 words
A blend according to claim 1 or 2 wherein the elastomer has a Mooney viscosity of from 15 to 25.
Claim 5
Dependent Claim
17 words
A blend according to claim 1, 2 or 3, wherein the polypropylene is a random reactor copolymer.
Claim 6
Dependent Claim
20 words
A blend according to any of the preceding claims wherein the copolymer contains from 2 to 15 weight percent ethylene.
Claim 7
Dependent Claim
27 words
A blend according to any of the preceding claims, wherein the copolymer contains about 3 percent ethylene, and has a melt flow rate of 4.0 at 230°C.
Claim 8
Dependent Claim
16 words
A blend according to any of the preceding claims wherein the elastomer is ethylene, propylene, 5-ethylidine-2-norbornene.
Claim 9
Dependent Claim
34 words
A blend according to any of the preceding claims which additionally includes an incidental ingredient selected from the group consisting of process aids, lubricants, antiblocking aids, antioxidants, foaming agents, slip agents and mixtures thereof.
Claim 10
Dependent Claim
18 words
The use of a blend according to any of the preceding claims to form an optically clear product.
Claim 11
Dependent Claim
16 words
An optically clear product whenever produced from a blend according to any of the preceding claims.
References Cited (Backward Citations)
No citation records indexed.
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