Method for the production of thermoplastic...

Details Method for the production of thermoplastic... Method for the production of thermoplastic...

2006-09-26

2006-09-26

Acquah, Samuel A. (Department: 1711)

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

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

C528S403000, C528S408000, C528S409000, C528S412000, C528S421000

Reexamination Certificate

active

07112650

ABSTRACT:
A process for preparing thermoplastic poly(3-hydroxyalkanoates) with a molar mass greater than 6 000 g/mol and a melting point in the range from 70 to 170° C., by reacting an oxirane compound with carbon monoxide in the presence of a transition metal catalyst which has rhodium(0), nickel(0), iron(0), cobalt(0) or palladium(0) as central metal and has been chelated with neutral Lewis bases, and also in the presence of diisocyanates, ortho esters, acetals, anhydrides, P2O5, MgO, MgCl2, MgSO4, zeolites, or a mixture of these, at a pressure in the range from 1 to 250 bar and at from room temperature to 150° C.

REFERENCES:
patent: 5281691 (1994-01-01), Hubbs et al.
patent: 195 08627 (1996-09-01), None
patent: 577 206 (1994-01-01), None
patent: 1020575 (1966-02-01), None
patent: 94/00506 (1994-01-01), None
patent: 95/20616 (1995-08-01), None
Yoshiharu Doi, Microbial Polyester, 1980, 1-14.
Yoshiharu Doi, Microbial Polyester, 1998, p. 21.
Yoshiharu Doi, Microbial Polyester, 1989, 107-133.
Seebach et al., Helvetica Chimica Acta, 1994,vol. 77, 1994, 1099-1123.
Breitschuh et al., Chimica 1990, vol. 44, 216-218.
Ohta et al., J.Chem.Soc., Chem.Commun.1992, 1725-1726.
Kircheldorf et al., Macromolecules 1994(27),3139-3146.
Hori et al., Macromolecules 1993(26), 5533-5534.
Zhang et al., Polymer Prep. (Am.Chem.Soc., Div. Polym. Chem), 1989, (30).
Zhang et al., Macromolecules 1990(23), 3206-3212.
Jedlinski et al., Macromolecules 1998, (31),6718-6720.
Gross et al., Macromolecules 1988(21), 2657-2668.
Lengweiler, Helvetica Chimica Acta 1996, vol. 79, pp. 670-701.

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