Method of producing an improved vibration damping and sound absorbing coating on a rigid substrate
US4346782A · kind A · utility
39Cited by
3References
16Claims
0Family size
Inventor
Key dates
| Filing date | Mar 2, 1981 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Mar 2, 2001 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2001/8457
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A novel method of producing a vibration damping and sound absorbing coating on a rigid substrate is provided in which method a first coating of a viscoelastic material having after gelling a modulus of elasticity of 5.times.10.sup.6 to 5.times.10.sup.8 dynes/cm.sup.2 is sprayed onto the substrate whereafter there is sprayed onto said first coating a second coating of a viscoelastic material having after gelling a modulus of elasticity of 5.times.10.sup.7 to 5.times.10.sup.9 dynes/cm.sup.2, the modulus of elasticity of said second outer coating being at least 10 times greater than that of said first coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.