Dendrimers of rubbery polymers

Details Dendrimers of rubbery polymers Dendrimers of rubbery polymers

2011-01-11

2011-01-11

Rabago, Roberto (Department: 1796)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S332300, C525S332500, C525S332800, C525S332900, C525S333200, C525S359300, C525S370000, C525S383000, C525S384000, C152S151000, C152S450000

Reexamination Certificate

active

07868099

ABSTRACT:
This invention discloses a process for synthesizing a dendrimer of a rubbery polymer comprising: (a) reacting a lithium terminated rubbery polymer with a halogenated tin containing compound to produce a polymer which is terminated with halogenated tin moieties, wherein the halogenated tin containing compound is of the structural formula:wherein X represents a halogen atom, wherein Z1groups can be the same or different and are selected from alkyl groups containing from 1 to 8 carbon atoms, wherein x represents an integer from 1 to 20, wherein the molar ratio of the lithium terminated rubbery polymer to halogen atoms in the halogenated tin containing compound is within the range of 2:n to (n−1):n, wherein n represents the number of halogen atoms that are bonded directly to tin atoms in the halogenated tin containing compound; (b) reacting the polymer which is terminated with halogenated tin moieties with a molar excess of a tertiary alcohol to produce a polymer which is terminated with hydroxy tin moieties; and (c) allowing the polymer which is terminated with the hydroxy tin moieties to couple under conditions sufficient to produce a dendrimer of the rubbery polymer.

REFERENCES:
patent: 4618650 (1986-10-01), Halasa et al.
patent: 2004/0020576 (2004-02-01), Frank et al.

Affiliated with

Also associated with

Rating

Dendrimers of rubbery polymers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dendrimers of rubbery polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dendrimers of rubbery polymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2706455