A curable perfluoropolyether adhesive composition containing the following components (A) to (C): (A) 100 parts by mass of a linear perfluoropolyether compound having at least two alkenyl groups per molecule and having a perfluoropolyether structure containing a repeating unit represented by —C.sub.aF.sub.2aO— in a main chain, “a” being an integer of 1 to 6; (B) an effective curing amount of an organosilicon compound having at least two silicon-bonded hydrogen atoms per molecule; and (C) a catalytic amount of a hydrosilylation-reaction catalyst, where a cured product of the curable perfluoropolyether adhesive composition is an adhesive having adhesion of less than 0.5 N/25 mm.

A curable perfluoropolyether adhesive composition containing the following components (A) to (C): (A) 100 parts by mass of a linear perfluoropolyether compound having at least two alkenyl groups per molecule and having a perfluoropolyether structure containing a repeating unit represented by —C.sub.aF.sub.2aO— in a main chain, “a” being an integer of 1 to 6; (B) an effective curing amount of an organosilicon compound having at least two silicon-bonded hydrogen atoms per molecule; and (C) a catalytic amount of a hydrosilylation-reaction catalyst, where a cured product of the curable perfluoropolyether adhesive composition is an adhesive having adhesion of less than 0.5 N/25 mm.

One of the objects of the present invention is to provide a thermally conductive silicone resin composition which has good thermal conductivity, a light weight (namely, a light weight per unit volume), and good reliability in high humidity, and a molded body thereof. The present invention provides a thermally conductive silicone resin composition comprising the following components (A) to (E): (A) an organopolysiloxane having at least two alkenyl groups each bonded to a silicon atom in an amount of 100 parts by mass, (B) an organohydrogen polysiloxane having at least two hydrogen atoms each bonded to a silicon atom in an amount such that a ratio of the number of the hydrogen atom bonded to a silicon atom relative to the number of the alkenyl group in component (A) is 0.1 to 2, (C) a thermally conductive filler in an amount of 2500 to 6000 parts by mass, (D) a catalytic amount of an addition reaction catalyst, and (E) an addition-reaction controlling agent in an amount of 0.01 to 1 part by mass, wherein the thermally conductive filler (C) comprises magnesium oxide having a specific surface area of 0.4 m.sup.2/g or less in an amount of 20 to 50 wt % and aluminum hydroxide in an amount of 10 to 30 wt %, relative to a total weight of component (C).

One of the objects of the present invention is to provide a thermally conductive silicone resin composition which has good thermal conductivity, a light weight (namely, a light weight per unit volume), and good reliability in high humidity, and a molded body thereof. The present invention provides a thermally conductive silicone resin composition comprising the following components (A) to (E): (A) an organopolysiloxane having at least two alkenyl groups each bonded to a silicon atom in an amount of 100 parts by mass, (B) an organohydrogen polysiloxane having at least two hydrogen atoms each bonded to a silicon atom in an amount such that a ratio of the number of the hydrogen atom bonded to a silicon atom relative to the number of the alkenyl group in component (A) is 0.1 to 2, (C) a thermally conductive filler in an amount of 2500 to 6000 parts by mass, (D) a catalytic amount of an addition reaction catalyst, and (E) an addition-reaction controlling agent in an amount of 0.01 to 1 part by mass, wherein the thermally conductive filler (C) comprises magnesium oxide having a specific surface area of 0.4 m.sup.2/g or less in an amount of 20 to 50 wt % and aluminum hydroxide in an amount of 10 to 30 wt %, relative to a total weight of component (C).

A heat dissipation sheet containing a silicone resin and a thermally conductive filler, wherein with respect to the cross-sectional shape of the thermally conductive filler, the average value of an aspect ratio of the 1st to 24th particles from the largest of biaxial average diameters, is in a range of 0.4 or more and 1.4 or less. In addition, an area ratio (Sr) of a total area S of cross-sectional shapes of the particles to a whole area of the cross-sectional view may be in a range of 20% or more and 80% or less, and the particle number ratio may be less than 1. Further, a thermal resistance ratio of a thermal resistance value when a pressure of 0.4 MPa is applied to a thermal resistance value when a pressure of 1.0 MPa is applied may be 1 or more.

A heat dissipation sheet containing a silicone resin and a thermally conductive filler, wherein with respect to the cross-sectional shape of the thermally conductive filler, the average value of an aspect ratio of the 1st to 24th particles from the largest of biaxial average diameters, is in a range of 0.4 or more and 1.4 or less. In addition, an area ratio (Sr) of a total area S of cross-sectional shapes of the particles to a whole area of the cross-sectional view may be in a range of 20% or more and 80% or less, and the particle number ratio may be less than 1. Further, a thermal resistance ratio of a thermal resistance value when a pressure of 0.4 MPa is applied to a thermal resistance value when a pressure of 1.0 MPa is applied may be 1 or more.

Embodiments herein provide a chest wall repair plate device where a central portion of the device is comprised of an elastomer to allow for rapid resection using a standard surgical scalpel should there be a need to quickly re-enter the chest cavity. The elastomeric section adjoins two or more rigid plate sections creating a simple, easily removable sternal stabilization system.

Embodiments herein provide a chest wall repair plate device where a central portion of the device is comprised of an elastomer to allow for rapid resection using a standard surgical scalpel should there be a need to quickly re-enter the chest cavity. The elastomeric section adjoins two or more rigid plate sections creating a simple, easily removable sternal stabilization system.

Described is a silicone hydrogel contact lens having non-uniform morphology. The contact lens may be made from a reactive mixture comprising: a silicone-containing component; a hydrophilic component; a non-reactive polymeric internal wetting agent; and a polymerization initiator, the contact lens having an oxygen permeability of at least about 60 barrers, and wherein the molar ratio in the lens of the polymeric non-reactive internal wetting agent to silicone, without a surface treatment, is greater in the lens's surface than in its bulk.

Described is a silicone hydrogel contact lens having non-uniform morphology. The contact lens may be made from a reactive mixture comprising: a silicone-containing component; a hydrophilic component; a non-reactive polymeric internal wetting agent; and a polymerization initiator, the contact lens having an oxygen permeability of at least about 60 barrers, and wherein the molar ratio in the lens of the polymeric non-reactive internal wetting agent to silicone, without a surface treatment, is greater in the lens's surface than in its bulk.