Solutia Incorporated

Eastman Chemical Company

Ucb Chip Inc.

Jun Lu

Wenjie Chen

Zhou Li

John Joseph D'Errico

Curtis Schilling, Iii

Yalda Farhoudi

Aristotelis Karagiannis

Helen Mackin Thompson

James R Moran

David Paul Bourcier

Ming Zhao

Gary Matis

Weihong Cui

Lora Lee Spangler

Kok Leong William Aw

Brian James Daer

Marilyn Grolitzer

Bruce Edward Wade

Steven Vincent Haldeman

Howard Smith Carman, Jr

Pinguan Zheng

Witold Szydlowski

Garry Kenneth Weakley

Jean-Pierre Etienne

Andrew Neil Smith

Jeffrey Benedict Hurlbut

Julia Claire Schimmelpenningh

Marcin Wardak

Guangxin Tang

A polymer interlayer having improved sound insulation is disclosed. The polymer interlayer comprises: at least one soft layer wherein the soft layer comprises a poly(vinyl butyral) resin composition having a dispersity in composition of at least 0.40 and a plasticizer; and a stiff layer comprising a poly(vinyl butyral) resin composition and a plasticizer; wherein the polymer interlayer has a damping loss factor () (as measured by Mechanical Impedance Measurement according to ISO 16940) of at least about 0.15 measured at two or more different temperatures selected from 10&#xb0; C., 20&#xb0; C. and 30&#xb0; C.

Multilayer interlayer having sound damping properties over a broad temperature range

Resin compositions, layers, and interlayers comprising two or more thermoplastic polymers and at least one RI balancing agent for adjusting the refractive index of at least one of the resins or layers is provided. Such compositions, layers, and interlayers exhibit enhanced optical properties while retaining other properties, such as impact resistance and acoustic performance.

Poly(vinyl acetal) resin compositions, layers, and interlayers having enhanced optical properties

This disclosure is related to the field of polymer interlayers for multiple layer glass panels and multiple layer glass panels having at least one polymer interlayer sheet. Specifically, this disclosure is related to the field of polymer interlayers comprising multiple thermoplastic layers which resist the formation of optical defects.

Defect resisting acoustic polymer interlayers

Multiple layer interlayers comprising pairs of alternating polymer layers are provided, along with methods of making and using the same. Multiple layer interlayers according to embodiments of the present invention may include more than three polymer layers and may exhibit desirable acoustic and optical properties, which may make them suitable for use in various types of multiple layer panels, including safety glass for automotive and architectural applications.

Multiple layer interlayers having enhanced properties

A process for producing a multilayer glass laminate panel having two glass sheets with a poly(vinyl butyral) interlayer sandwiched therebetween, the process comprising the steps of: providing two glass sheets; providing a poly(vinyl butyral) interlayer, and inserting the interlayer between the two glass sheets to produce a laminate; removing air from the produced laminate; applying heat and pressure to the laminate for a hold time, wherein the laminate is free of bubbles at the edges of the laminate. The multilayer glass laminate panel has improved optical properties, and specifically reduced levels of edge defects, such as edge bubbles in the laminate.

Multiple layer panels having reduced levels of edge defects

Resin compositions, layers, and interlayers comprising two or more poly(vinyl acetal) resins and at least one blending agent or haze reducing agent are provided. Such compositions, layers, and interlayers exhibit enhanced optical properties while retaining other properties, such as impact resistance and acoustic performance.

Blends of poly(vinyl acetal) resins for compositions, layers, and interlayers having enhanced optical properties

A multiple layer panel having improved sound insulation is disclosed. The multiple layer panel comprises a first rigid substrate having a first thickness H, a second rigid substrate having a second thickness H, wherein H&#x2264;H, and a multiple layer acoustic interlayer having a thickness Hbetween the first and second rigid substrates.

Sound insulation panels having high interlayer thickness factors

Multilayered interlayers comprising stiff skin or outer layers and a soft core layer(s) are disclosed. The multilayered interlayers comprise: a first polymer layer (skin layer) comprising plasticized poly(vinyl butyral) resin; a second polymer layer (core layer) comprising a blend of two (or more) plasticized poly(vinyl butyral) resins having different residual hydroxyl content; and optionally a third polymer layer (skin layer) comprising plasticized poly(vinyl butyral) resin.

Multiple layer interlayer resisting defect formation

A tapered interlayer comprising at least one resin layer and a having tapered zone with a wedge angle of at least 0.13 mrad. The first resin layer comprises a first poly(vinyl acetal) resin and at least one RI balancing agent. The refractive index of the first resin layer is at least 1.480.

A polymer interlayer comprising a layer comprising a poly(vinyl acetal) resin having a residual hydroxyl content and a residual acetate content, and a plasticizer, wherein the residual hydroxyl content, the residual acetate content and the plasticizer are selected such that the polymer interlayer has at least one glass transition temperature less than about 20&#xb0; C. and a peak tan delta of greater than 1.33, and a glass panel having a configuration of 2.3-mm glass//interlayer//2.3-mm glass and at 20&#xb0; C. has a transmission loss, TL, of greater than 42 decibels as measured by weighted average sound transmission loss at 2000 to 8000 Hz, and a transmission loss, TL, of greater than 38 decibels at the coincident frequency is disclosed.

Polymer interlayers having improved sound insulation properties

A polymer interlayer comprising a layer comprising a poly(vinyl acetal) resin having a residual hydroxyl content and a residual acetate content, and a plasticizer, wherein the residual hydroxyl content, the residual acetate content and the plasticizer are selected such that the polymer interlayer has at least one glass transition temperature less than about 20&#xb0; C. and a peak tan delta of greater than 1.29, and a glass panel having a configuration of 2.3-mm glass//interlayer//2.3-mm glass and at 20&#xb0; C. has a transmission loss, TL, of greater than 41 decibels as measured by weighted average sound transmission loss at 2000 to 8000 Hz, and a transmission loss, TL, of greater than 38 decibels at the coincident frequency is disclosed.

Multiple layer panels including a pair of substrates and an interlayer disposed therebetween are provided. In some cases, the multiple layer panels may utilize substrates having different thicknesses, and such configurations may help reduce glass thickness and overall panel weight. However, panels of the present invention may still exhibit sufficient strength, rigidity, and acoustic performance and can be suitable for use in a wide range of automotive, aeronautical, and/or architectural applications.

Polymeric interlayers and multiple layer panels made therefrom exhibiting enhanced properties and performance

An interlayer comprised of a thermoplastic resin, at least one high refractive index plasticizer and, optionally, a conventional plasticizer. The use of a thermoplastic resin, a high refractive index plasticizer, and, optionally, a conventional plasticizer reduces or minimizes the optical defects caused by different refractive indices without sacrificing other characteristics of the interlayer.

Growing community of inventors

East Longmeadow, MA, United States of America

Jun Lu