Synthesis of a liquid polymer and a functionalized polymer

Details Synthesis of a liquid polymer and a functionalized polymer Synthesis of a liquid polymer and a functionalized polymer

2011-07-19

2011-07-19

Teskin, Fred M (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S083000, C526S084000, C526S085000, C526S179000, C526S180000, C585S012000, C585S507000

Reexamination Certificate

active

07981990

ABSTRACT:
A method comprising: (a) forming a living liquid polymer, wherein said living liquid polymer is anionically initiated and comprises a cation; (b) adding a functional initiator precursor of the formula FI-H, wherein H is hydrogen and FI is a functional group, said H terminates said living liquid polymer resulting in said liquid polymer having a number average molecular weight of about 20,000 (g/mole) to about 100,000 (g/mole), and said FI and said cation form a functional initiator; (c) adding monomer, wherein said functional initiator initiates anionic polymerization of said monomer; and (d) terminating the polymerization reaction initiated in step (c). Steps (a) through (c) may be conducted in a single reactor, allowing a liquid polymer to be dispersed in a functionalized polymer in a single polymerization step. Thus, the liquid polymer does not have to be handled separately and processing efficiency is improved.

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Mar. 27, 2009 International Search Report from PCT Patent Application No. PCT/US2008/010189 (2 pp.).

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