摘要:
An aqueous emulsion composition prepared by emulsion polymerization of a mixture consisting essentially of a polydiorganosiloxane, an emulsifier and an ultraviolet light absorbing agent having the formula ##STR1## wherein X is C.dbd.O or ##STR2## Y is H or OH, Z is H, OH, OQ or OW, where at least one Z is OH if Y is H,Q is --CH.sub.2 (CH.sub.2).sub.n Si(R.sup.2).sub.x (OR.sup.1).sub.y andW is --C.sub.m H.sub.2m+1,where x=0, 1 or 2, y=1, 2 or 3, x+y=3,R.sup.1 is an alkyl or alkanoyl radical having 1 to 6 carbon atoms,R.sup.2 is an alkyl radical having 1 to 6 carbon atoms,n=0, 1 or 2 and m=1 to 18; wherein said ultraviolet light absorbing agent is chemically bonded to the polydiorganosiloxane resulting from said emulsion polymerization.
摘要翻译:通过基本上由聚二有机硅氧烷,乳化剂和具有式(I)的紫外光吸收剂组成的混合物的乳液聚合制备的水性乳液组合物,其中X为C = O或Y为Y,Z为H ,OH,OQ或OW,其中如果Y是H,其中至少一个Z是OH,Q是-CH 2(CH 2)n Si(R 2)x(OR 1)y,W是-Cm H 2 m + 1,其中x = 1或2,y = 1,2或3,x + y = 3,R1是具有1至6个碳原子的烷基或烷酰基,R2是具有1至6个碳原子的烷基,n = 0,1或 2和m = 1至18; 其中所述紫外光吸收剂与由所述乳液聚合产生的聚二有机硅氧烷化学键合。
摘要:
There is disclosed novel silicone polyether alkyl copolymers, and a method for their preparation, for use as emulsifiers in improved stability water-in-oil emulsions.
摘要:
The present invention provides novel silicone compositions comprising phenol-modified branched and cyclic silicones which provide improved low temperature viscosity properties.
摘要:
Organofunctional siloxanes useful in a wide variety of personal care and plastics applications are disclosed having a carboxyalkylaminoalkyl functionality.
摘要:
Articles of manufacture having improved refractive index made of phenol-modified siloxanes are described. One use of these articles is as optical lenses.
摘要:
A silicone emulsion for treating silicate particulate matter such as perlite and vermiculite, to make it water-resistant comprising a silicone fluid composed of difunctional siloxy units, trifunctional siloxy units and monofunctional siloxy units and as the emulsifier in water there is the reaction product of an aliphatic carboxylic acid with ammonia. The silicone emulsion is applied by spraying it on to the heated silicate particulate matter which is preferably heated to at least 150.degree. C., such that the silicone fluid rapidly cures on the particulate matter.
摘要:
There is provided a new improved two-part method of preparing an emulsified organosilicon-based, aqueous antifoam composition which comprises mixing thickened water (Part II) with a dispersion of an organosilicon antifoam agent and emulsifiers in water (Part I). The readily dilutable compositions provide economic advantages in manufacture, such as increased equipment utilization efficiency.
摘要:
A novel method for putting silicone onto polycarbonate is disclosed comprising preparing a mixture of a silicone, a polycarbonate and a solvent, heating the mixture to reflux and recovering the solid powdery residue.
摘要:
Organofunctional siloxanes useful in a wide variety of personal care and plastics applications are disclosed having a carboxyalkylaminoalkyl functionality.