Polymers used in elastomeric binders for high-energy composition

Details Polymers used in elastomeric binders for high-energy composition Polymers used in elastomeric binders for high-energy composition

1987-05-19

1998-05-05

Miller, Edward A.

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

Synthetic resins

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

525408, 525409, 525410, 525411, 525413, 525415, 528 65, 528 66, 552 12, 149 194, C08G 6532

Patent

active

057476039

ABSTRACT:
Difunctional, hydroxyl-terminated polymers in which the terminal hydroxyl group is non-primary or hindered are end-capped to provide unhindered, primary, terminal hydroxyl groups which promote an improved cure and improved mechanical properties of the cured elastomer. End-capping chemicals have an hydroxyl-reactive group at one end and a group at the other end which is removable to provide a primary, unhindered hydroxyl group. Short-chain, hydroxyl-terminated polymers are chain-extended with a diisocyanate.

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H.R. Kricheldorf, Liebigs Ann. Chem. pp. 772-792.

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