Method for the preparation of polymers and copolymers of vinyl m

Details Method for the preparation of polymers and copolymers of vinyl m Method for the preparation of polymers and copolymers of vinyl m

1978-12-19

1980-12-09

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525259, 525267, 526174, 526175, 526178, C08F 446, C08F 448, C08F 456, C08F 458

Patent

active

042385881

ABSTRACT:
The invention pertains to a method for preparation of polymers, grafted polymers, and copolymers from olefins substituted by polar groups (ester, nitrile, or aryl) or from dienes, wherein the polymerization is initiated by the system formed by mixing of an organic amide of alkaline metal with an alkaline metal alkoxide. The organic amide is derived from primary or secondary amines or polyamines, or from tertiary polyamines containing at least one primary or secondary amino group. These amines contain N-C or N-Si bonds, 1-4000 C atoms and 1-1000 N atoms in a molecula, or have the molecular weight below 100,000. The alkoxides are derived from C.sub.3 -C.sub.16 alcohols. The polymerizations are carried out at -80.degree. to +80.degree. C. (advantageously at +20.degree. C.), at the monomer/organic amide molar ratio 5-1500, at the molar ratio alkoxide/amide 0.5-10, and in hydrocarbon or ether solvents. The advantage of organic amides of alkaline metals is the easy and economical preparation and suitable physical and chemical properties (solubility, higher resistance to contamination), while the alkoxide component exhibits the superadditive effect on the polymerization rate and yield and affects the microstructure of polymer. The method is also suitable for preparation of block copolymers by successive addition of various monomers, block copolymers with polyamine blocks, and grafted polyamine polymers.

REFERENCES:
patent: 3240772 (1966-03-01), Natta et al.
patent: 3285894 (1966-11-01), Lim et al.
patent: 4056580 (1977-11-01), Lochmann et al.
patent: 4104465 (1978-08-01), Halasa
Chem. Abstracts, vol. 81, pp. 119311; 119288 n, Caubere, 1974.

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