Back to results
US 10,711,075 B2Granted
Method of preparing rubber composition including syndiotactic 1,2-polybutadiene
AssigneeKorea Kumho Petrochemical Co., Ltd.
InventorsJae Yun Kim, Yeong Min Jung
Life of this patent
Estimating the term…
Abstract
Provided is a method of preparing a rubber composition, which includes (a) reacting a conjugated diene-based monomer with one or more of compounds in the presence of a first catalyst; (b) adding a conjugated diene-based monomer to a product of the step (a) and inducing a reaction; and (c) adding a second catalyst and a conjugated diene-based monomer to a product of the step (b) and inducing a reaction.
Claims13
A method of preparing a rubber composition, comprising:
- (a) reacting a conjugated diene-based monomer with one or more of compounds represented by the following Chemical Formulas 1 and 2 in the presence of a first catalyst;
- (b) adding a conjugated diene-based monomer to a product of the step (a) and inducing a reaction;
- and
- (c) adding a second catalyst and a conjugated diene-based monomer to a product of the step (b) and inducing a reaction:
- (R1)m—Z1C≡CnZ2—(R2)o <Chemical Formula 1>
- (R1)m—Z1-A1C≡CnA2-Z2—(R2)o <Chemical Formula 2>
- wherein R1 and R2 each are a C1 to C20 alkyl, aryl, or alkoxy group, —NR′R″, —SiR′R″R″′, or hydrogen, wherein R′, R″, and R′″ each are a C1 to C20 alkyl, aryl, or alkoxy group, or hydrogen,
- m and o each are an integer of 0 to 3,
- Z1 and Z2 each are silicon, tin, nitrogen, oxygen, sulfur, phosphorus, carbon, or hydrogen,
- A1 and A2 each are a C1 to C20 alkylene or arylene group, and
- n is an integer of 1 to 20.
8 more elements
Dependencies are inferred from the claim text.