An electrostatic mat, wherein the mat comprises at least one electrostatic layer, wherein the at least one layer comprises an elastomeric rubber, wherein the elastomeric rubber comprises 20-100 phr elastomeric polyether, wherein the elastomeric polyether comprises 10-75 wt % ethylene oxide, 20-70 wt % epihalohydrin, and 0-10% vinyloxirane. The mat prevents the generation of voltage when it is walked on and/or dissipates the charge that was generated.

Use of biologically-derived polyphenols for the preparation of epoxy resins is described. Examples of biologically-derived polyphenols include resveratrol, genistein, daidzein, and polyphenols synthesized from tyrosine. Because the epoxy resins are prepared from biologically-derived materials, they provide epoxy resins that will degrade into biologically harmless materials. The epoxy resins can be used to provide coating compositions.

Use of biologically-derived polyphenols for the preparation of epoxy resins is described. Examples of biologically-derived polyphenols include resveratrol, genistein, daidzein, and polyphenols synthesized from tyrosine. Because the epoxy resins are prepared from biologically-derived materials, they provide epoxy resins that will degrade into biologically harmless materials. The epoxy resins can be used to provide coating compositions.

An electronic component comprising: a case; a switching mechanism incorporated within the case; an actuator configured to actuate the switching mechanism, the actuator being mounted in the case so as to be displaceable by sliding; and a rubber cap configured to seal a sliding part of the actuator, wherein the rubber cap is made of a hydrin-based rubber.

An electronic component comprising: a case; a switching mechanism incorporated within the case; an actuator configured to actuate the switching mechanism, the actuator being mounted in the case so as to be displaceable by sliding; and a rubber cap configured to seal a sliding part of the actuator, wherein the rubber cap is made of a hydrin-based rubber.

Disclosed is a block copolymer of the formula: A-B-A (I) or A-B (II), wherein block A is: (i) a polymer of allyl glycidyl ether or (ii) a polymer of allyl glycidyl ether wherein one more of the allyl groups have been replaced with 1,2-dihydroxypropyl group or a group of the formula: —(CH.sub.2).sub.a—S—(CH.sub.2).sub.b—X, wherein a, b, and X are defined herein. The block copolymers find use as wetting agents in the preparation of porous membranes from aromatic hydrophobic polymers such as polyethersulfone. Also disclosed are methods of preparing such block copolymers and porous membranes therefrom.

Disclosed is a block copolymer of the formula: A-B-A (I) or A-B (II), wherein block A is: (i) a polymer of allyl glycidyl ether or (ii) a polymer of allyl glycidyl ether wherein one more of the allyl groups have been replaced with 1,2-dihydroxypropyl group or a group of the formula: —(CH.sub.2).sub.a—S—(CH.sub.2).sub.b—X, wherein a, b, and X are defined herein. The block copolymers find use as wetting agents in the preparation of porous membranes from aromatic hydrophobic polymers such as polyethersulfone. Also disclosed are methods of preparing such block copolymers and porous membranes therefrom.

Disclosed are ethylenically unsaturated salts of allyl (poly)ether sulfates utilized as reactive surfactants or emulsifiers during emulsion polymerization.

A method for producing a hydroxyl-functionalized polysiloxane having secondary or tertiary hydroxyl groups, said method comprising the steps of: i) reacting a hydroxyalkyl allyl ether having a secondary or tertiary alcohol group with a siloxane under anhydrous conditions and under transition metal catalysis, said hydroxylalkyl allyl ether conforming to Formula (I) ##STR00001## wherein n is 0, 1, 2, 3, 4 or 5, preferably 0; m is 1, 2, 3, 4 or 5, preferably 1; spacer group A is constituted by a covalent bond or a C.sub.1-C.sub.20 alkylene group; R.sup.1 is hydrogen, a C.sub.1-C.sub.8 alkyl group, a C.sub.3-C.sub.10 cycloalkyl group, a C.sub.6-C.sub.18 aryl group or an aralkyl group; R.sup.a, R.sup.b, R.sup.c, R.sup.d, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 may be the same or different and each is independently selected from hydrogen, a C.sub.1-C.sub.8 alkyl group, a C.sub.6-C.sub.18 aryl group or a C.sub.6-C.sub.18 aralkyl group, with the proviso that at least one of R.sup.3 and R.sup.4 is not hydrogen; and said siloxane conforming to Formula (II) ##STR00002## wherein m is 1, 2, 3, 4 or 5, preferably 1; R.sup.6, R.sup.7, R.sup.8 and R.sup.9 may be the same or different and each represent a C.sub.1-C.sub.8 alkyl group, a C.sub.3-C.sub.10 cycloalkyl group, a C.sub.6-C.sub.18 aryl group or a C.sub.6-C.sub.18 aralkyl group; and ii) in the presence of the reaction product of step i), performing a ring opening polymerization of at least one cyclic siloxane monomer.

A stable dispersant and an application thereof in preparing copolymer polyols, the preparation method for the stable dispersant including the steps of 1) contacting a polyol with a dianhydride compound for reaction so as to prepare an adduct; 2) performing a ring-opening addition reaction on the adduct obtained in step 1) and an epoxy compound to prepare a stable dispersant; the dianhydride compound does not contain a double bond that may copolymerize with an olefinically unsaturated monomer, while the epoxy compound contains a double bond that may copolymerize with an olefinically unsaturated monomer, the polyol is a polyester polyol and/or a polyether polyol, preferably being a polyether polyol. The stable dispersant obtained by means of the described preparation method has a multi-active site anchoring function, and is applied to the synthesis of copolymer polyols to obtain copolymer polyols having relatively uniform particle size.