Block copolymer by reacting alkylene oxide and glycidyl...

Details Block copolymer by reacting alkylene oxide and glycidyl... Block copolymer by reacting alkylene oxide and glycidyl...

2009-09-04

2010-10-12

Sellers, Robert (Department: 1796)

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

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

C524S612000, C525S404000, C525S405000

Reexamination Certificate

active

07812114

ABSTRACT:
Disclosed is a process for preparing copolymer dispersions made of alkylene oxides and glycidyl ethers according to formula (I)in which R1is hydrogen or a C1-C4-alkyl radical, R2and R4are an alkyl or aryl radical having 1 to 30 carbon atoms, and R3is an alkyl or aryl radical having 1 to 50 carbon atoms, which may also contain heteroatoms. A is an alkylene unit having 2 to 6 carbon atoms. In formula (1), x is a number from 0 to 10, y is a number from 0 to 10, n is a number from 0 to 100, k is a number from 1 to 100, R5is an acid group or hydrogen, and m is a number from 1 to 500, with the proviso that (y+n) must be at least 1.

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