Resin composition for vibration-damping material, vibration-damping material, and sound-insulating member

A sound insulating member comprising a vibration damping material prepared from a resin composition and a rigid member joined to at least a portion of at least one surface of the damping material, said vibration damping material being secured to a fixing member,

• wherein said vibration damping material is interposed between said rigid member and said fixing member, and
• wherein the resin composition contains 100 parts by weight of a chlorine-containing thermoplastic resin having a chlorine content of 20 to 70 wt. %, and 50 to 300 parts by weight of a mixture of a chlorinated paraffin having 12 to 16 carbon atoms on average with 30 to 70 wt. % in chlorination degree and a chlorinated paraffin having 20 to 50 carbon atoms on average with 30 to 70 wt. % in chlorination degree, the proportion by wt. % of the former chlorinated paraffin being larger than the proportion by wt. % of the latter chlorinated paraffin.

A sound insulating member comprising a vibration damping material prepared from a resin composition and a rigid member joined to at least a portion of at least one surface of the damping material, said vibration damping material being secured to a fixing member,

• wherein said vibration damping material is interposed between said rigid member and said fixing member, and
• wherein the resin composition consists essentially of 100 parts by weight of a chlorine-containing thermoplastic resin having a chlorine content of 30 to 50 wt. %, and 50 to 300 parts by weight of a mixture of a chlorinated paraffin having 20 to 50 carbon atoms on average with 30 to 50 wt. % in chlorination degree and a chlorinated paraffin having 20 to 50 carbon atoms on average with 50 to 70 wt. % in chlorination degree.

A sound insulating member comprising a transparent vibration damping material prepared from a resin composition and a rigid member joined to at least a portion of at least one surface of the damping material,

• wherein the resin composition contains 100 parts by weight of a chlorine-containing thermoplastic resin having a chlorine content of 20 to 70 wt. %, 50 to 300 parts by weight of a chlorinated paraffin having 12 to 50 carbon atoms on average with 30 to 70 wt. % in chlorination degree, and 1 to 20 parts by weight of a rosin compound.

A sound insulating member comprising a vibration damping material prepared from a resin composition and a rigid member joined to at least a portion of at least one surface of the damping material,

• wherein the resin composition contains 100 parts by weight of a chlorine-containing thermoplastic resin, 20 to 200 parts by weight of a chlorinated paraffin having 12 to 16 carbon atoms on average, and 1 to 20 parts by weight of a rosin compound per 100 parts by weight of the chlorine-containing thermoplastic resin.