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US 2016/0264706 A1Published application
Stereoregular diblock polybutadienes having a 1,4-cis/syndiotactic 1,2 structure from stereospecific polymerization
AssigneeVersalis S.P.A.
InventorsFrancesco MASI, Anna SOMMAZZI, Giovanni RICCI, Giuseppe LEONE, Salvatore COPPOLA
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Abstract
Stereoregular diblock polybutadiene composed of a polybutadiene block having a 1,4-cis structure and a polybutadiene block having a syndiotactic 1,2 structure. Said stereoregular diblock polybutadiene can be advantageously used in both the footwear industry (for example, in the production of soles for shoes) and in the production of tires for motor vehicles and/or trucks.
Claims21
A stereoregular diblock polybutadiene composed of a polybutadiene block having a 1,4-cis structure and a polybutadiene block having a 1,2 syndiotactic structure, having the following formula (I):
- PB1—PB2 (I)
- wherein:
- PB1 corresponds to the polybutadiene block having a 1,4-cis structure;
- PB2 corresponds to the polybutadiene block having a 1,2 syndiotactic structure;
- essentially free of 1,4-trans units.
2 more elements
Dependencies are inferred from the claim text.