Method for protecting heat sensitive substrates from fire and excessive heat and resulting article
US4808476A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Jun 19, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for protecting heat sensitive substrates from fire and excessive heat involves: PA0 I. applying to the substrate a layer of a char forming intumescent curable composition comprising: PA1 (a) an epoxide group containing material, at least 20 weight percent of said material having an oxirane functionality greater than 2; PA1 (b) a curing agent adapted to cure the epoxide group containing material wherein at least 20 weight percent of said curing agent is comprised of an aralkyl polyamine containing material; PA1 (c) an additive component comprising a mixture of materials adapted to provide a source of: PA2 (i) phosphorous, PA2 (ii) zinc, PA2 (iii) boron and PA2 (iv) an expansion gas upon thermal decomposition, PA1 said curable composition being capable of forming a carbonaceous char upon exposure to heat or flame; PA0 II. allowing the intumescent curable composition to at least partially cure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.