Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2006-04-18
2006-04-18
Pezzuto, Helen L. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S194000, C525S240000, C525S331700, C525S333700
Reexamination Certificate
active
07030196
ABSTRACT:
The invention relates to the use of known hydroxylamine esters selected from the group consisting of HALS (sterically hindered amine) compounds and novel hydroxylamine esters for the controlled degradation of polypropylene.
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Nesvadba Peter
Pfaendner Rudolf
Roth Michael
Zink Marie-Odile
Ciba Specialty Chemicals Corporation
Pezzuto Helen L.
Suhadolnik Joseph C.
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