IP Library › Granted Patent US 8,895,759
Granted Patent B2
US 8,895,759 · App. 14/153,783 · Granted Nov 25, 2014

Intermediates useful in the preparation of maleimide functionalized polymers

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Quick Facts
Patent No.
US 8,895,759
App. No.
14/153,783
Granted
Nov 25, 2014
Kind
B2
Abstract

Methods for forming maleimide functionalized polymers are provided. In one such embodiment, a maleimide functionalized polymer is prepared in a method that includes a step of carrying out a reverse Diels-Alder reaction. Intermediates useful in the methods, as well as methods for preparing the intermediates, are also provided. Also provided are polymeric reagents, methods of using polymeric reagents, compounds and conjugates.

Claims (5)

1. A compound of the following structure:

wherein n′ is 2 to about 10.

2. The compound of claim 1 , wherein n′ is 2.

3. The compound of claim 1 , wherein n′ is 4 to about 10.

4. The compound of claim 1 , wherein n′ is 4.

Assignments (4)
RELEASE OF SECURITY INTEREST Recorded Apr 17, 2020
From: TC LENDING, LLC, AS COLLATERAL AGENT
To: NEKTAR THERAPEUTICS
Reel/Frame 053180/0009 →
RELEASE OF SECURITY INTEREST RECORDED AT REEL 32383, FRAME 0684 Recorded Oct 14, 2015
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
To: NEKTAR THERAPEUTICS
Reel/Frame 036876/0143 →
GRANT OF SECURITY INTEREST IN UNITED STATES PATENTS Recorded Oct 6, 2015
From: NEKTAR THERAPEUTICS
To: TC LENDING, LLC, AS COLLATERAL AGENT
Reel/Frame 036796/0562 →
SECURITY AGREEMENT Recorded Mar 4, 2014
From: NEKTAR THERAPEUTICS
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 032383/0684 →