Oil-in-water emulsions of aminosiloxanes

Details Oil-in-water emulsions of aminosiloxanes Oil-in-water emulsions of aminosiloxanes

2008-01-15

2008-01-15

Peng, Kuo-Liang (Department: 1712)

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C516S055000

Reexamination Certificate

active

07319119

ABSTRACT:
Oil-in-water emulsions which contain(i) 100 parts by weight of a polydimethylsiloxane (P) having aminoalkyl groups and having an amine number of at least 0.1 meq/g of polydimethylsiloxane (P), composed of units of the general formula Iin-line-formulae description="In-line Formulae" end="lead"?R1aR2bSiO(4−a−b/2),  (I)in-line-formulae description="In-line Formulae" end="tail"? in which R2are aminoalkyl radials of the formula IIin-line-formulae description="In-line Formulae" end="lead"?—R3—NR4R5,,  (II)in-line-formulae description="In-line Formulae" end="tail"?(ii) protonating agent,(iii) water and(iv) not more than 5 parts by weight of emulsifier, are stable and provide for improved water repellency of porous and nonporous, absorptive and non-absorptive substrates treated therewith.

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