Blocked mercaptosilane coupling agents for filled rubbers

Details Blocked mercaptosilane coupling agents for filled rubbers Blocked mercaptosilane coupling agents for filled rubbers

2006-07-25

2006-07-25

Egwim, Kelechi C. (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...

C524S146000, C524S167000, C524S168000, C524S173000, C524S188000, C524S262000, C524S265000, C524S267000, C524S302000, C524S306000, C524S307000, C524S308000, C524S309000, C524S311000, C524S392000, C524S393000, C524S401000

Reexamination Certificate

active

07081500

ABSTRACT:
Blocked mercaptosilanes are provided in which the blocking group contains and unsaturated heteroatom or carbon chemically bound directly to sulfur via a single bond. This blocking group optionally may be substituted with one or more carboxylate ester or carboxylic acid functional groups. These silanes are used in manufacture of inorganic filled rubbers, with the silanes deblocked by a deblocking agent. Synthesis of the blocked mercaptosilanes is also provided.

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