Glass container coated with polyurethane
US4093759A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1976 |
| Grant date | Jun 6, 1978 |
| Priority date | — |
| Expiry date | Feb 17, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31601
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for preventing the scattering of glass fragments in the event of the bursting of a glass container such as a bottle, which comprises coating the surface of the glass container with a resin composition in a thickness of at least 100 microns, said composition comprising a dispersion of (A) a powder with a particle diameter of about 1 to 100 microns of a solid compound capable of reaction with (B) upon heating to form a higher molecular weight cured product, in (B) a normally liquid urethane prepolymer having a molecular weight of at least 400 per isocyanato group, and being capable of forming a film having a tensile strength of at least 300 kg/cm.sup.2 and a percent elongation of at least 200%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.