| 发明名称 |
SOUND-DEADENING MULTILAYER POLYMERIC STRUCTURES |
| 摘要 |
Disclosed is a multilayer polymeric structure comprising a plurality of layers comprising at least one layer comprising a stiff polymeric material having a flexural modulus of about 140 kpsi to about 500 kpsi; and at least one layer comprising a soft polymeric material having a flexural modulus of less than 75 kpsi; wherein layers of the stiff polymeric material alternate with layers of the soft polymeric material; and the total thickness of the multilayer polymeric structure is from about 1 mm to about 14 mm. The structure provides improved sound-deadening properties. |
| 申请公布号 |
US2015224750(A1) |
申请公布日期 |
2015.08.13 |
| 申请号 |
US201514618622 |
申请日期 |
2015.02.10 |
| 申请人 |
E I DU PONT DE NEMOURS AND COMPANY |
发明人 |
VISIOLI DONNA LYNN;KIM GEON-SEOK |
| 分类号 |
B32B27/08;B32B37/18;B32B7/12;B32B7/02;B32B27/34;B32B27/30 |
主分类号 |
B32B27/08 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A multilayer polymeric structure comprising a plurality of layers comprising
(a) at least one layer comprising a stiff polymeric material having a flexural modulus of 140 kpsi (965 MPa) to about 500 kpsi (3450 MPa); and (b) at least one layer comprising a soft polymeric material having a flexural modulus of less than 75 kpsi; wherein a layer of the stiff polymeric material alternates with a layer of the soft polymeric material; and the total thickness of the multilayer polymeric structure is from about 1.0 mm to about 14 mm. |
| 地址 |
Wilmington DE US |
