Multiple layer interlayer having improved optical and sound insulation properties

US9809009B2 · kind B2 · utility

Assignee

• Soliton, LLC · US

Inventors

• Jun Lu · East Longmeadow, US
• Wenjie Chen · Lo Wu, CN
• Curtis Schilling, III · Kingsport, US
• John Joseph D'Errico · Glastonbury, US
• Weihong Cui · Longmeadow, US
• Zhou Li · 红钢城街道, CN
• Jeffrey B. Hurlbut · West Springfield, US

Key dates

• Filing date: Dec 8, 2014
• Grant date: Nov 7, 2017
• Expiry date: Jan 7, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B32B2605/18
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Multilayered interlayers having good acoustic properties comprising a stiff skin layer(s) and a soft core layer(s) are disclosed. The multilayered interlayers comprise: a first polymer layer (skin layer) comprising plasticized poly(vinyl acetal) resin; a second polymer layer (core layer) comprising plasticized poly(vinyl acetal) resin; wherein at least one plasticizer is a high refractive index plasticizer. The multilayered interlayers have low mottle and resist mottle formation.