Self-adhesive addition-crosslinking silicon compositions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...

Reexamination Certificate

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C528S031000, C528S025000

Reexamination Certificate

active

07119159

ABSTRACT:
Addition-crosslinking silicone compositions comprise(A) diorganopolysiloxanesin-line-formulae description="In-line Formulae" end="lead"?R1aR2bSiO(4−a−b)/2in-line-formulae description="In-line Formulae" end="tail"?whereinR1is hydroxyl or a monovalent C1-20hydrocarbon radical free of aliphatic unsaturation,R2is a monovalent aliphatically unsaturated C1-10hydrocarbon radical,a has a value from 1.0 to 2.0,b is 0.0003 to 2, and 1.5<(a+b)<3.0,(B) organohydropolysiloxanesin-line-formulae description="In-line Formulae" end="lead"?R3cR4dR5eHfSiO(4−c−d−2e−f)/2in-line-formulae description="In-line Formulae" end="tail"?R3is a monovalent aliphatically saturated C1-20hydrocarbon radical,R4is (a) an optionally halogen-substituted monovalent C6-15hydrocarbon radical containing at least one aromatic C6ring, or (b) a halogen-substituted, saturated monovalent C2-20hydrocarbon radical,R5is a bivalent C6-20hydrocarbon radical Si-bonded at both ends, andc, d, e and f is zero or a positive number,(C) adhesion promotersin which R12is a hydrogen atom, a hydroxyl group, a halogen atom, or organic radical,and X is—(R13—)C(—R13)—, —(O═)S(═O)—, —(O═)S—, —C(═O)—, —O—(CH3—)Si(—CH3)—O—, —(CH2)s— or —O—wherein R13is hydrogen, halogen, or optionally substituted alkyl, aryl, alkenyl or alkynyl, and s is at least 2, and(D) a hydrosilylation catalyst.

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English abstract EP 1 106 662, Jun. 2001.
Sorrell, T.N., Yuan, H.G., Org. Chem. 62 (1997), pp. 1899-1902.
Ergozhin et al., “Properties of Macromolecules with Weakly Acid Carboxyl Groups,” Translated from Izv. Akad. Nauk SSSR Ser. Khim. 24, (1975), p. 1851 (pp. 1733-1735).

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