Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Reexamination Certificate
2008-09-02
2008-09-02
Peng, Kuo-Liang (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
C528S015000, C528S019000, C528S033000, C525S477000, C556S431000
Reexamination Certificate
active
10718764
ABSTRACT:
Acyclic diene metathesis (ADMET) has been utilized in the synthesis of carbosilane and carbosiloxane polymers bearing a latent reactive methoxy-functional group on each repeat unit. The polymerization results in a linear thermoplastic polymer. The latent reactive methoxy groups remain inert during polymerization; however, exposure to moisture triggers hydrolysis and the formation of a chemically cross-linked thermoset. The thermoset's properties can be modified by varying the ratio of carbosilane and carbosiloxane repeat units in the final material. Also, increasing cross-link density by using cross-linkable chain-end groups and increasing the run length of the soft phase, maximizing phase separation and elasticity, allows for the synthesis of elastic thermosets exhibiting good tensile strength. Adding a trifunctional ADMET active chain-end cross-linker to the system improved the mechanical behavior of the resulting polymer.
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Matloka Piotr
Sworen John C.
Wagener Kenneth B.
Zuluaga Hector F.
Akerman & Senterfitt
Lefkowitz Gregory M.
Nelson Gregory A.
Peng Kuo-Liang
University of Florida Research Foundation Inc.
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