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

• US 7,041,377 B2
• Filed: 04/12/2001
• Issued: 05/09/2006
• Est. Priority Date: 04/14/2000
• Status: Expired due to Term

• Current Assignee: Sekisui Chemical Company Limited (Sekisui)
• Original Assignee: Sekisui Chemical Company Limited (Sekisui)
• Inventors: Abe, Hiroyuki, Miura, Akihisa, Yamaji, Katsuhiko
• Primary Examiner(s): Thexton, Matthew A.
• Application Number:
  US10/257,147
• Publication Number:
  US 20030109621A1
• Time in Patent Office: 1,853 Days
• Field of Search: 524/272, 524/273, 524/466, 524/472, 524/473, 428/442, 428/463, 428/522
• US Class Current: 428/442
• CPC Class Codes: C08L 23/286 Chlorinated polyethylene
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 27/06 Homopolymers or copolymers of vinyl chloride
• CPC Class Codes: C08L 27/24 halogenated
• CPC Class Codes: F16F 1/3605 characterised by their material F16F1/362, F16F1/364, F16F1/366, F16F1/37 take precedence; composition of macromolecular compounds in general C08L
• CPC Class Codes: G10K 11/162 Selection of materials
• CPC Class Codes: Y10T 428/31649 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31699 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer

Abstract

The object of the invention is to provide sound insulating members exhibiting both high vibration damping performance and high sound insulation performance, a vibration damping material for affording such members and a resin composition for forming the vibration damping material. The invention provides a first resin composition for vibration damping materials which contains 100 parts by weight of a chlorine-containing thermoplastic resin, and 20 to 200 parts by weight of a chlorinated paraffin having 12 to 16 carbon atoms on average. The thermoplastic resin contains preferably 20 to 70 wt. %, more preferably 30 to 70 wt. %, of chlorine. The chlorinated paraffin is preferably 30 to 70 wt. %, more preferably 35 to 65 wt. %, in chlorination degree.

Claims

1. 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 (a) is interposed between said rigid member and said fixing member and (b) is in the shape of a sheet, plate, bar, or block, and

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

2. The sound insulating member according to claim 1, wherein the chlorine-containing thermoplastic resin contains 30 to 70 wt. % of chlorine, and the chlorinated paraffin is 30 to 70 wt. % in chlorination degree.

3. A method of reducing sound vibration comprising incorporating the sound insulating member according to claim 1, into an article, device, structure or equipment.

8. The sound insulating member according to any one of claims 1 to 5, wherein the resin composition further contains 50 to 200 parts by weight of a plasticizer per 100 parts by weight of the chlorine-containing thermoplastic resin.

9. The sound insulating member according to any one of claims 1 to 5, wherein the resin composition further contains 1 to 20 parts by weight of a rosin compound per 100 parts by weight of the chlorine-containing thermoplastic resin.

10. The sound insulating member according to any one of claims 1 to 5, 6 and 7, wherein the rigid member has a tensile modulus of at least 10⁸ N/m².

11. The sound insulating member according to any one of claims 1 to 5 and 6, wherein the chlorine-containing thermoplastic resin is a chlorinated polyethylene.

12. The sound insulating member according to any one of claims 1, 4 and 5, wherein said vibration damping material is directly secured to a fixing member.

4. 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.

5. 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.

6. 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.

7. 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.