Tetrablock polymers and their hydrogenated analogs

Details Tetrablock polymers and their hydrogenated analogs Tetrablock polymers and their hydrogenated analogs

1977-09-23

1979-09-18

Michl, Paul R.

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

Synthetic resins

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

525289, C08F29704

Patent

active

041682866

ABSTRACT:
Tetrablock polymers having the configuration B--A.sub.1 --C--A.sub.2 and C--A.sub.1 --B--A.sub.2 and their hydrogenated counterparts are disclosed, wherein B is a low vinyl poly 1,3-butadiene block, A.sub.1 and A.sub.2 can be the same or different polymerized blocks of a monovinylarene monomer having 8-14 carbon atoms per molecule, and C is a block selected from the group consisting of polymerized blocks of a conjugated diene having 4-12 carbon atoms per molecule in which there is on the average at least one side chain branch for every 10 carbon atoms of the polymeric backbone. The hydrogenated tetrablock polymers have the configuration B'--A.sub.1 --C'--A.sub.2 and C'--A.sub.1 --B'--A.sub.2 in which B' is hydrogenated B and C' is hydrogenated block C.

REFERENCES:
patent: T953011 (1976-12-01), Smith
patent: 3670054 (1972-06-01), DeLaMare
patent: 3853978 (1974-12-01), Horiie

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