Silicon-containing copolymer and process for producing the same

Details Silicon-containing copolymer and process for producing the same Silicon-containing copolymer and process for producing the same

2005-09-20

2005-09-20

Moore, Margaret G. (Department: 1712)

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

Synthetic resins

From silicon reactant having at least one...

C106S287110, C106S287130

Reexamination Certificate

active

06946536

ABSTRACT:
A silicon-containing copolymer which comprises units represented by the general formulae (I) and (II) as essential units and ones represented by the general formulae (III) to (VII) as optional units and has a number average molecular weight of 500 to 1,000,000,in-line-formulae description="In-line Formulae" end="lead"?—(—R1R2Si—A —)p—  (I)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?—(—R3R4Si—R7—SiR5R6—)q—  (II)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?—(—R8Si—A—)r—  (III)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?—(—R9(H)Si—A—)s—  (IV)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?—(—R1R2Si—NH—R10—NH—)t—  (V)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?—(—R8Si—NH—R10—NH—)u—  (VI)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?—(—R9(H)Si—NH—R10—NH—)w—  (VII)in-line-formulae description="In-line Formulae" end="tail"?wherein A is NH or oxygen, the proportions of these satisfying the relationship 0.01≦Si—O/(Si—N+Si—O)≦0.99.

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