Block copolymer containing tetrahydrofuran block

Details Block copolymer containing tetrahydrofuran block Block copolymer containing tetrahydrofuran block

1985-05-24

1987-11-10

Briggs, Sr., Wilbert J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525186, 525385, 525412, C08F29500

Patent

active

047058307

ABSTRACT:
A block copolymer is disclosed which includes an ethylene-propylene copolymer segment (A) and a tetrahydrofuran segment (B). The weight ratio of (A) to (B) is 5/95 to 95/5, and the block copolymer has a number-average molecular weight of about 1,000 to about 1,000,000.

REFERENCES:
patent: 3497573 (1970-02-01), Hostetler
patent: 3523144 (1970-08-01), Zimmerman et al.
Yoshiharu Doi, Satoshi Ueki, and Tominaga Keii, "Preparation of `Living` Polypropylenes by a Soluble Vanadium-Based Ziegler Catalyst," Makromol. Chem., 180, pp. 1359-1361, (1979).
Yoshiharu Doi, Satoshi Ueki, and Tominaga Keii, "`Living` Coordination Polymerization of Propene Initiated by the Soluble V(acac).sub.3 -Al(C.sub.2 H.sub.5).sub.2 Cl System," Macromolecules, 12, pp. 814-819.

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