Invention Grant
- Patent Title: Multilayer interlayer having sound damping properties over a broad temperature range
- Patent Title (中): 在宽温度范围内具有隔音性能的多层中间层
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Application No.: US14514641Application Date: 2014-10-15
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Publication No.: US09355631B2Publication Date: 2016-05-31
- Inventor: Jun Lu
- Applicant: Solutia Inc.
- Applicant Address: US MO St. Louis
- Assignee: Solutia Inc.
- Current Assignee: Solutia Inc.
- Current Assignee Address: US MO St. Louis
- Agent Michelle Bugbee
- Main IPC: E04B1/86
- IPC: E04B1/86 ; G10K11/168 ; B32B7/02 ; B32B27/30
Abstract:
A polymer interlayer having improved sound insulation is disclosed. The polymer interlayer comprises at least one soft layer wherein the soft layer comprises: a first poly(vinyl butyral) resin having a first residual hydroxyl content and a first glass transition temperature (Tg); a second poly(vinyl butyral) resin having a second residual hydroxyl content and a second glass transition temperature (Tg), wherein the difference between the first residual hydroxyl content and the second residual hydroxyl content is at least 1.0 weight percent; wherein the difference between the first glass transition temperature (Tg) the second glass transition temperature (Tg) is at least 1.5° C.; and a plasticizer; at least one stiffer layer comprising a third poly(vinyl butyral resin) having a third residual hydroxyl content; and a plasticizer, wherein the polymer interlayer has a damping loss factor (η) (as measured by Mechanical Impedance Measurement according to ISO 16940) of at least about 0.16 measured at two or more different temperatures selected from 10° C., 20° C. and 30° C.
Public/Granted literature
- US20160111077A1 MULTILAYER INTERLAYER HAVING SOUND DAMPING PROPERTIES OVER A BROAD TEMPERATURE RANGE Public/Granted day:2016-04-21
Information query
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