Process for the controlled radical polymerization or copolymeriz

Details Process for the controlled radical polymerization or copolymeriz Process for the controlled radical polymerization or copolymeriz

1997-06-27

1998-12-29

Smith, Jeffrey

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526217, 526328, 526346, 526335, 526344, 526242, C08F 444, C08F 2010, C08F 1208, C08F 1406, C08F 3600, C08F 1418

Patent

active

058543643

ABSTRACT:
At least one of the monomers is polymerized or copolymerized in bulk, solution, emulsion or suspension, at a temperature which may be as low as 0.degree. C., in the presence of at least one radical-generator compound and at least one metal complex catalyst of formula Ma.sub.a (L).sub.n (M=Cu, Ag or Au; A=Hal, pseudohalogen or carboxylate; L=ligands of M chosen from those of formula ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 =H, C.sub.1 -C.sub.10 alkyl, aromatic or heteroaromatic; Z.sup.1, Z.sup.2 and Z.sup.3 =one of the following: ##STR2## (R.sup.7 to R.sup.18 =H, C.sub.1 -C.sub.10 alkyl, aromatic or heteroaromatic; R.sup.19 and R.sup.20 =H, Hal, C.sub.1 -C.sub.10 alkyl, C.sub.1 -C.sub.10 alkoxy or --(CR.sup.21 R.sup.22)rNR.sup.23 R.sup.24, where R.sup.21, R.sup.22, R.sup.23 and R.sup.24 =H,C.sub.1 -C.sub.10 alkyl, aromatic or heteroaromatic, and r=integer from 1 to 10; it being possible also for not more than two from among Z.sup.1, Z.sup.2 and Z.sup.3 each to represent H; o, p and q=integer from 1 to 10 and may also be 0 except if the associated residue Z.sup.1, Z.sup.2 or Z.sup.3, respectively, is --NR.sup.19 R.sup.20 ; a=1 or 2; n=1, 2 or 3.

REFERENCES:
patent: 5405913 (1995-04-01), Harwood et al.
patent: 5708102 (1998-01-01), Fryd et al.
Wang et al., "Controlled/`Living` Radical Polymerization. Halogen Atom Transfer Radical Polymerization Promoted by a Cu(I)Cu(II) Redox Process", Macromolecules, 28:7901-7910, 1995.

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