Highly volatile polyether-modified silicone surfactant

Details Highly volatile polyether-modified silicone surfactant Highly volatile polyether-modified silicone surfactant

2006-08-29

2009-06-16

Price, Elvis O (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C556S450000, C556S451000, C556S453000

Reexamination Certificate

active

07547797

ABSTRACT:
A highly volatile electrical/electronic parts surfactant containing a polyether-modified silicone having one polyether chain in the molecule, wherein the surface tension at 25° C. of a 0.01 mass % aqueous solution thereof is 25 mN/m or less, the aforesaid silicone is expressed by the following average structural formula (1), and when heated from room temperature to 200° C. at a rate of 5° C./minute to 200° C. and maintained at a temperature of 200° C. for 100 minutes, the polyether-modified silicone completely volatilizes without leaving any remainder, and a method of manufacturing this highly volatile polyether-modified silicone are disclosed.in-line-formulae description="In-line Formulae" end="lead"?AMe2SiO(MeASiO)nSiMe2A  (1)in-line-formulae description="In-line Formulae" end="tail"?In formula (1), any one of A is a substituent group expressed by the following general formula (2), the remaining A are methyl groups and n is an integer from 0-2.in-line-formulae description="In-line Formulae" end="lead"?—CaH2aO(C2H4O)bR  (2)in-line-formulae description="In-line Formulae" end="tail"?In formula (2), a is 3-4, b is an integer from 1-7 and R is a methyl group or an ethyl group.

REFERENCES:
patent: 5558806 (1996-09-01), Policello et al.
patent: 1053678 (2000-11-01), None
P.J.G. Stevens; “Organosilicone Surfactants As Adjuvants For AgroChemicals”; Pesticide Science, Elsevier Applied Science Publisher.; Barking, GB; vol. 38 No. 2/3; Jan. 1993; pp. 103-122; XP000408739; ISSN: 0031-613X.

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