Butadiene polymers having terminal functional groups

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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C525S170000, C525S171000, C525S182000, C525S183000, C525S184000, C525S332800, C525S332900, C525S333100, C525S333200, C525S378000, C525S379000, C525S383000, C525S384000, C525S386000

Reissue Patent

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10655988

ABSTRACT:
Hydrogenated butadiene polymers having terminal functional groups have minimum viscosity at any molecular weight when the 1,2-addition is between 30% and 70% Hydrogenated butadiene polymers having about two terminal hydroxyl groups per molecule have surprisingly lower viscosities at 30% to 70% 1,2-addition than similar polymers having either higher or lower amounts of 1,2-addition. The polymers are useful in making coatings, sealants, binders, and block copolymers with polyesters, polyamides, and polycarbonates.

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