α-Halogenated acid esters with polyvalent alcohols as...

Details α-Halogenated acid esters with polyvalent alcohols as... α-Halogenated acid esters with polyvalent alcohols as...

2007-01-02

2007-01-02

Harlan, Robert D. (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S324000, C526S327000, C526S329200, C526S329700

Reexamination Certificate

active

10787676

ABSTRACT:
The invention relates to α-halocarboxylic acid esters of polyhydric, at least trihydric, alcohols, which can be used as initiators for ATRP. Using those initiators it is possible to prepare block copolymers having branched structures.

REFERENCES:
patent: 5789487 (1998-08-01), Matyjaszewski et al.
patent: 2232136 (1974-01-01), None
Ueda et al., Macromolecules vol. 31, No. 3, (02) 1998 pp. 557-562.
K. Matyjaszewski et al., Macromolecules, (1999), vol. 32, pp. 6526-6535.
J. Ueda et al., Macromolecules, (1998), vol. 31, No. 3, pp. 557-562.
G. E. McCasland et al., Journal Am. Chem. Soc., vol. 74, No. 2, pp. 564-565 (1952).
Derwent Abstr. 04247V/03 for DE 2232136 (1974).
T. Ziegler, Liebigs Ann. Chem. (1990), pp. 1125-1131.

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