Patent EP0351391A2 successfully refreshed from Google Patents.
EP0351391A2
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Syndiotactic polypropylene
Assignee: Fina Technology Inc
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Filing: 1989-05-31
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Granted: —
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Expires: 2009-05-31
Abstract
Abstract The invention provides a new structure for syndiotactic polypropylene in which the microstructure of the polymer chain consists of blocks of repeating racemic (r) dyads being predominantly connected by units consisting of a meso triad (mm). The polymer is also highly crystalline and consists of a high percentage of racemic (r) dyads.
Inventors
- 👤 John A. Ewen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 09:20
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/04; C08F10/06; C08F110/00; C08F110/04; C08F110/06; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/6592; C08F4/65922; C08F4/65927; C08F4/65912
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
29 words
Syndiotactic polypropylene in which the microstructure of the polymer chain consists of blocks of repeating racemic (r) dyads being connected predominantly by units consisting of a meso triad (mm).
Claim 2
Dependent Claim
29 words
Syndiotactic polypropylene in which the microstructure of the polymer chain consists of blocks of repeating racemic (r) dyads being connected predominantly by units consisting of a meso triad (mm).
Claim 3
Dependent Claim
19 words
The syndiotactic polypropylene of Claim 1 wherein greater than 40% of the connecting units are a meso triad (mm).
Claim 4
Dependent Claim
18 words
The syndiotactic polypropylene of Claim 1 wherein the polymer structure consists of greater than 80% racemic (r) dyads.
Claim 5
Dependent Claim
18 words
The syndiotactic polypropylene of Claim 1 wherein the polymer structure consists of greater than 95% racemic (r) dyads.
Claim 6
Dependent Claim
16 words
The syndiotactic polypropylene of Claim 1 wherein the molecular weight distribution (Mw/Mn) is greater than 3.
References Cited (Backward Citations)
No citation records indexed.
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