Initiator

Details Initiator Initiator

2011-03-08

2011-03-08

Truong, Duc (Department: 1765)

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

Synthetic resins

Treating polymer containing material or treating a solid...

C528S486000, C528S488000, C528S232000, C528S50200C, C528S503000, C252S182130, C252S182320, C252S182170, C252S182150, C252S182230

Reexamination Certificate

active

07902324

ABSTRACT:
An initiator for cationic polymerization comprises a salt of a protic acid as well as a protic acid. The molar ratio of protic acid to salt is in the range from 1:0.01 to 1:2000. The initiator is used for example for cationic homo- or copolymerization of trioxane, and permits stable and flexible operation of the polymerization.

REFERENCES:
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patent: 3883450 (1975-05-01), Berg et al.
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patent: 0 678 535 (1990-10-01), None
patent: 09302055 (1997-11-01), None
patent: 10292039 (1998-11-01), None
Sanda, et al., New Transformation of 1,3-Oxathiolane-2-thione into 1,3-Dithiolan-2-one via Polymerization and Depolymerization,Macromol. Rapid Commun., (2001), 22; pp. 363-366.

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