COMPOSITION FOR POLYURETHANE FOAM PRODUCTION, POLYURETHANE FOAM, AND SOUND-ABSORBING MEMBER

• US 20200131298A1
• Filed: 06/01/2018
• Published: 04/30/2020
• Est. Priority Date: 06/05/2017
• Status: Abandoned Application

• Current Assignee: Bridgestone Corporation
• Original Assignee: Bridgestone Corporation
• Inventors: KANZAKI, Shinya
• Application Number:
  US16/618,879
• Publication Number:
  US 20200131298A1
• Time in Patent Office: Days
• CPC Class Codes: B60R 13/08 Insulating elements, e.g. for sound insulation sound insulating linings for trains B61D17/185; drivers' cabs for load-carrying vehicles insulated against vibrations or noise B62D33/0604; thermal or acoustic insulation of engines F02B77/11; damping of sounds using compensation by electro-acoustic methods G10K11/178
• CPC Class Codes: C08G 18/14 Manufacture of cellular products
• CPC Class Codes: C08G 18/3206 aliphatic
• CPC Class Codes: C08G 18/4825 Polyethers containing two hydroxy groups C08G18/4833 - C08G18/5096 take precedence
• CPC Class Codes: C08G 18/6677 having at least three hydroxy groups
• CPC Class Codes: C08G 18/7621 being toluene diisocyanate including isomer mixtures
• CPC Class Codes: C08G 2110/0008 flexible
• CPC Class Codes: C08G 2110/005 < 50kg/m3
• CPC Class Codes: C08G 2350/00 Acoustic or vibration damping material
• CPC Class Codes: C08K 3/34 Silicon-containing compounds
• CPC Class Codes: C08K 5/02 Halogenated hydrocarbons C08K5/0091 takes precedence
• CPC Class Codes: C08K 5/54 Silicon-containing compounds C08K5/0091 takes precedence
• CPC Class Codes: C08K 5/5406 containing elements other than oxygen or nitrogen
• CPC Class Codes: C08K 5/541 containing oxygen
• CPC Class Codes: C08L 83/04 Polysiloxanes

Abstract

The purpose of the present invention is to provide: a composition for polyurethane foam production which gives polyurethane foam having a low density and excellent sound-absorbing properties; polyurethane foam obtained from the composition; and a sound-absorbing member. The composition for polyurethane foam production of the present invention is characterized by comprising a polyol, a polyisocyanate, a catalyst, a blowing agent, a foam stabilizer, and an auxiliary blowing agent, the blowing agent being water, the amount of which is 4-11 parts by mass per 100 parts by mass of the polyol, and the auxiliary blowing agent being a liquid halogenated olefin, the amount of which is 10-30 parts by mass per 100 parts by mass of the polyol.

Claims

1. A composition for producing a polyurethane foam, comprising a polyol, a polyisocyanate, a catalyst, a foaming agent, a foam stabilizer, and an auxiliary foaming agent, wherein

water is contained as the foaming agent,

a content of the water is from 4 to 11 parts by mass per 100 parts by mass of the polyol,

a liquid halogenated olefin is contained as the auxiliary foaming agent, and

a content of the liquid halogenated olefin is from 10 to 30 parts by mass per 100 parts by mass of the polyol.

2. The composition for producing a polyurethane foam according to claim 1, wherein the foam stabilizer contains at least one selected from the group consisting of a non-reactive silicone and a reactive silicone.

3. The composition for producing a polyurethane foam according to claim 2, which satisfies at least one of the following (a) and (b):

(a) the non-reactive silicone is contained as the foam stabilizer, and a content of the non-reactive silicone is from 2.0 to 5.0 parts by mass per 100 parts by mass of the polyol; and

(b) the reactive silicone is contained as the foaming agent, and a content of the reactive silicone is from 1.0 to 3.0 parts by mass per 100 parts by mass of the polyol.

4. The composition for producing a polyurethane foam according to claim 1, wherein one kind of foam stabilizer is contained as the foam stabilizer.

5. The composition for producing a polyurethane foam according to claim 1, wherein the liquid halogenated olefin is represented by the following formula 1:

C₃H_gF_hX_i 

 

(1)

wherein each X independently represents a chlorine atom, a bromine atom or an iodine atom, g represents an integer of 0 to 5, h represents an integer of 1 to 6, and i represents an integer of 0 to 5, provided that g+h+i=6 is satisfied.

6. The composition for producing a polyurethane foam according to claim 1, wherein the liquid halogenated olefin is trans-1-chloro-3,3,3-trifluoropropene.

7. The composition for producing a polyurethane foam according to claim 1, wherein the polyisocyanate contains 70% by mass or more of a tolylene diisocyanate compound.

8. A polyurethane foam, which is obtained by subjecting the composition for producing a polyurethane foam according to claim 1 to reaction and foaming.

9. The polyurethane foam according to claim 8, which is used as a sound-absorbing member.

10. The polyurethane foam according to claim 8, which has a density of 6 kg/m³ to 20 kg/m³.

11. The polyurethane foam according to claim 8, which has an air permeability of 0.1 ml/cm²/sec to 40.0 ml/cm²/sec.

12. A sound-absorbing member comprising the polyurethane foam according to claim 8.

13. The composition for producing a polyurethane foam according to claim 2, wherein one kind of foam stabilizer is contained as the foam stabilizer.

14. The composition for producing a polyurethane foam according to claim 2, wherein the liquid halogenated olefin is represented by the following formula 1:

C₃H_gF_hX_i 

 

(1)

wherein each X independently represents a chlorine atom, a bromine atom or an iodine atom, g represents an integer of 0 to 5, h represents an integer of 1 to 6, and i represents an integer of 0 to 5, provided that g+h+i=6 is satisfied.

15. The composition for producing a polyurethane foam according to claim 2, wherein the liquid halogenated olefin is trans-1-chloro-3,3,3-trifluoropropene.

16. The composition for producing a polyurethane foam according to claim 2, wherein the polyisocyanate contains 70% by mass or more of a tolylene diisocyanate compound.

17. The composition for producing a polyurethane foam according to claim 5, wherein the liquid halogenated olefin is trans-1-chloro-3,3,3-trifluoropropene.

18. The polyurethane foam according to claim 9, which has a density of 6 kg/m³ to 20 kg/m³.

19. The polyurethane foam according to claim 9, which has an air permeability of 0.1 ml/cm²/sec to 40.0 ml/cm²/sec.

20. A sound-absorbing member comprising the polyurethane foam according to claim 9.