Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1996-07-18
1998-08-25
Zemel, Irina S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525272, 526173, 526181, 502157, 568659, C08F29704, C08F 600
Patent
active
057984182
ABSTRACT:
The present invention provides novel, multi-arm or star-shaped polymers having mixed protected functional and non-functional ends, their optionally hydrogenated analogues, and the polymers produced by removal of the protecting groups. The invention also provides a process for the preparation of novel multi-arm or star-shaped polymers having branched-end functionality on some, but not all, of the branches. The multi-arm or star polymers of this invention are produced from more than one type of initiator, i.e., from both functional and non-functional initiators which, by design, incorporates both desired physical properties associated with multi-arm or star polymers with non-functional branch-ends and the versatility of functional branch end multi-arm or star polymers.
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FMC Corporation
Zemel Irina S.
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