Method for preparing multi-arm poly (ethylene glycol) amines

Details Method for preparing multi-arm poly (ethylene glycol) amines Method for preparing multi-arm poly (ethylene glycol) amines

2011-01-11

2011-01-11

Truong, Duc (Department: 1796)

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

Synthetic resins

Nitrogen-containing reactant

C528S425000, C528S482000, C528S485000, C528S486000, C528S489000, C528S492000, C528S50200C, C528S503000

Reexamination Certificate

active

07868132

ABSTRACT:
A method for preparing multi-arm poly(ethylene glycol) (PEG) amines from multi-arm PEG polyols is described. The method comprises a two step process, wherein the multi-arm PEG polyol is first reacted with thionyl chloride to form a multi-arm PEG chloride, which is subsequently reacted with aqueous or anhydrous ammonia to yield the multi-arm PEG amine.

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