Title:
CURED SILICONE ADHESIVE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/141146
Kind Code:
A1
Abstract:
The present invention provides a cured silicone adhesive composition, the cured silicone adhesive composition, comprising a chemically cross-linked reaction product of the following reaction components: an optional vinylfunctional siloxane having a vinyl functionality of 2 or more and diphenylsiloxane units; a siloxane gum comprising diphenyl siloxane groups, and vinylalkyl siloxane groups; an effective amount of a tackifier; wherein the total weight percentage of diphenylsiloxane units is 6%to 11%, according to theformula-Si (Ph) 2-O-, based on the total weight of the cured silicone adhesive composition, the cured silicone adhesive composition has a tan delta of at most 0.9 for a temperature equal to 200℃, and the cured silicone adhesive composition has a tan delta of at least 0.27 in a temperature range from 25℃ to 200℃, as measured by a rheo logical curve. Dampmg films comprising sueh cured silicone adhesive are provided. Microspeaker diaphragm materials comprising such damping films are also provided. Manufacturing methods of damping filins are also provided.
Inventors:
WALKER CHRISTOPHER B (US)
YANG CHAO (CN)
YANG CHAO (CN)
Application Number:
PCT/CN2020/141207
Publication Date:
July 07, 2022
Filing Date:
December 30, 2020
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
YANG CHAO (CN)
YANG CHAO (CN)
International Classes:
C08L83/07; C08K5/54; C08L83/04
Foreign References:
| CN104650593A | 2015-05-27 | |||
| CN106381122A | 2017-02-08 | |||
| CN111808539A | 2020-10-23 | |||
| CN106010427A | 2016-10-12 | |||
| CN107880844A | 2018-04-06 | |||
| CN111051461A | 2020-04-21 | |||
| JP2011088968A | 2011-05-06 | |||
| JP6367635B2 | 2018-08-01 |
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)
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