公开(公告)号：US11970571B2

公开(公告)日：2024-04-30

申请号：US17510637

申请日：2021-10-26

Applicant: STEPAN COMPANY

Inventor： Michael E. O'Brien ,  Warren A. Kaplan ,  Sarah Wolek ,  Jennifer S. Westfall ,  Calvin Gang

IPC: C08G59/06 ,  C08G59/24 ,  C08G59/42 ,  C08G59/62 ,  C08G59/68 ,  C08G59/72 ,  C08G65/331 ,  C08L67/02 ,  C08L71/08 ,  G10K11/162

CPC classification number: C08G59/063 ,  C08G59/245 ,  C08G59/686 ,  C08G59/72 ,  C08L67/02 ,  C08L71/08 ,  C08G2170/00 ,  C08G2350/00

Abstract: Noise, vibration, or harshness (NVH) properties of an industrial or consumer product are reduced by incorporating therein an effective amount of a polyether- or polyester-epoxide polymer (PEEP) composition. The PEEP compositions are one-component or two-component reaction products of a polyepoxide compound and a polyol composition. The PEEP compositions have a glass-transition temperature within the range of −50° C. to 50° C. and a loss factor of at least 0.5 by ASTM D5992 over a temperature range of at least 15 Celsius degrees at one or more frequencies within the range of 0.1 to 10,000 Hz. The PEEP compositions provide NVH damping over a broad temperature range, have improved flexibility compared with conventional epoxy technologies, avoid amine and isocyanate reactants, and can be tailored to meet target specifications.