Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-03-23
1994-02-08
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
5253297, 5253303, 5253305, 5253336, 525293, 525296, 525426, 525436, 520298, 520311, 528 75, 528 85, 528111, C08F22054
Patent
active
052849228
ABSTRACT:
In a second-order or third-order organic nonlinear optical material, one of compounds represented by the following formulas (1) and (2) is bonded to a polymer: ##STR1## wherein each of .pi..sub.1 to .pi..sub.n independently represents a cyclic compound of a .pi. electron conjugate system, at least one of R.sub.11 to R.sub.n4 represents an alkyl substituting group derivative and others represent hydrogen, each of X.sub.1 to X.sub.n-1 and Y.sub.1 to Y.sub.n-1 represents one member selected from the group consisting of CH, N, and N.fwdarw.O, A represents an electron acceptor group, D represents an electron donor group, and n is an integer of 3 or more.
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Amano Michiyuki
Kajno Toshikuni
Shuto Yoshito
Nagumo Mark
Nippon Telegraph and Telephone Corporation
Schofer Joseph L.
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