Unlock instant, AI-driven research and patent intelligence for your innovation.

Polydienes and diene copolymers having organophosphine functionality

A copolymer and organophosphine technology, which is applied in the field of polydiene and diene copolymers with organophosphine functions, can solve the problems of unpredictable composition selection and polymerization system poisoning

Inactive Publication Date: 2015-02-18
BRIDGESTONE CORP
View PDF49 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, anionic polymerization of conjugated dienes is sensitive and many compounds or substituents may poison the polymerization system
Additionally, the choice of substituents or functional groups that can affect filling compositions such as tire treads is difficult to predict

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polydienes and diene copolymers having organophosphine functionality
  • Polydienes and diene copolymers having organophosphine functionality
  • Polydienes and diene copolymers having organophosphine functionality

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0079] The reactive polymer can be prepared by allowing a conjugated diene monomer, optionally with a monomer copolymerizable with the conjugated diene monomer, in the presence of an effective amount of an initiator (i.e., an amount of a phosphorus-containing organolithium compound). Aggregate together to achieve. The introduction of the initiator, conjugated diene monomer, optionally comonomer, and any solvent (if employed) forms the polymerization mixture in which the reactive polymer is formed. The amount of initiator to be employed may depend on factors such as the type of initiator used, purity of ingredients, polymerization temperature, desired rate and conversion of polymerization, desired molecular weight, and the interplay of many other factors.

[0080] In one or more embodiments, the amount of initiator used (i.e., the amount of phosphorus-containing organolithium compound) can be from about 0.05 to about 100 mmol per 100 grams of monomer, in other embodiments from ...

example

[0168] Sample 1: Non-functional polymer for control

[0169] Into a 7.57 L stainless steel reactor equipped with turbine stirrer blades were charged 1.55 kg hexane, 0.39 kg 35.0 wt% styrene / hexane and 2.50 kg 21.8 wt% 1,3-butadiene / hexane. The reactor was charged with 3.44 mL of 1.65M n-butyllithium / hexane, 2.06 mL of 1.60M 2,2-ditetrahydrofurylpropane (DTHFP) / hexane and the batch was heated to 87° C. heat temperature. After approximately 30 minutes of exotherm, drain a portion of the contents into isopropanol with antioxidant (BHT). The polymer was drum dried to yield a polymer with the properties listed in Table 1.

[0170] Sample 2: Synthesis of SBR Initiated by Butyllithium-Vinyldiphenylphosphine Adduct

[0171] Into a 7.57 L stainless steel reactor equipped with turbine stirrer blades were charged 1.55 kg hexane, 0.39 kg 35.0 wt% styrene / hexane and 2.50 kg 21.8 wt% 1,3-butadiene / hexane. The reactor was charged with 3.44 mL of 1.65M n-butyllithium / hexane, 4.36 mL of 1....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
dispersityaaaaaaaaaa
Login to View More

Abstract

Embodiments provide polydienes and diene copolymers having organophosphines functionality. Specific embodiments employ phosphorus-containing organometal initiators and copolymers prepared by anionically polymerizing conjugated diene monomer and vinyl organophosphine.

Description

[0001] This application claims the benefit of US Provisional Application Serial No. 61 / 640,915, filed May 1, 2012, and US Provisional Application Serial No. 61 / 779,399, filed March 13, 2013, which are incorporated herein by reference. technical field [0002] Embodiments of the present invention provide polydienes and diene copolymers having organophosphine functionality. Specific embodiments relate to the preparation of functional polymers by employing phosphorus-containing organometallic initiators. Other embodiments provide copolymers prepared by anionic polymerization of conjugated diene monomers with vinyl organophosphine. Background technique [0003] Anionic polymerization techniques have been used to synthesize polymers useful in tire manufacturing. Using these techniques, certain organometallic compounds can be used to initiate polymerization of monomers such as conjugated diene monomers. Due to the mechanism by which initiation and polymerization proceeds, the or...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F36/04C08F30/02C08F236/04
CPCC08F230/02C08F236/04C08F236/06C08K3/04C08K3/36C08L43/02C08F2/00C08F4/48C08F30/02C08F36/04C08F236/14
Inventor 泰伦斯·E·霍根威廉·L·赫根洛泽大卫·M·罗格曼
Owner BRIDGESTONE CORP