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Fuel Cells

Intumescent-coating-materials

Extraction of coal

We claim: 1. A high boiling aromatic solvent oil for the solvent extraction of coal, produced by ...

Ion exchange resin containing activated carbon

The embodiments of this invention in which an exclusive property or privilege is claimed are ...

Method for recovering hydrocarbons from molten metal halides

Having thus described the invention, I claim: 1. In a process for hydrocracking heavy carbonaceous ...

Improvements in and relating to the production of coke

We claim: 1. A process for the production of coke which process comprises digesting coal at an ...

Coal liquefaction with subsequent bottoms pyrolysis

I claim: 1. In a process for the production of liquid hydrocarbons from coal or similar liquefiable ...

Catalytic process for manufacture of lubricating oils

AND PREFERRED EMBODIMENTS The feedstock for the process of this invention may be any substantially ...

Keying system for electrical connectors

I claim: 1. An electrical connector assembly comprising first and second rectangular connector ...

Supercurrent devices having electrode configurations for moving vortices under magnetic field control

In each of the embodiments described below it will be understood that cryogenic means, not shown ...

Cells having cathodes derived from ammonium-copper-molybdenum-chalcogen compounds

What is claimed is: 1. An electric current-producing cell, comprising: (a) an anode having as its ...

Lead-acid storage battery

Accordingly, it is a principal object of the present invention to provide a lead-acid storage ...

Intumescent coating materials

Details

Inventors: Downing, Brian Y.; Hamer, George D.;
Assignee: British Industrial Plastics Limited (Manchester, GB2)
Primary Examiner: Foelak; Morton
Assistant Examiner:
Attorney, Agent or Firm: Stevens, Davis, Miller & Mosher

An intumescent composition comprising a resinous binder, an inorganic acid source, a carbon source and a blowing agent, the blowing agent comprises (a) a 2-amino s-triazine of general formula ##STR1## in which R.sup.1 and R.sup.2 are the same of different and are each selected from hydrogen, halogen, hydroxyl and amino groups and alkyl, substituted alkyl, alkenyl and substituted alkenyl groups containing up to 6 carbon atoms and (b) a saturated or unsaturated polybasic carboxylic acid containing no more than 2 non-carboxyl carbon atoms per carboxyl group.

DETAILED DESCRIPTION We claim: 1.
An intumescent composition comprising a resinous binder and an inorganic acid source, a carbon source and as blowing agent a salt of (a) a 2-amino s-triazine of general formula ##STR3## in which R.
sup.
1 and R.
sup.
2 are the same or different and are each selected from the group consisting of hydrogen, halogen, hydroxyl and amino groups and alkyl, substituted alkyl, alkenyl and substituted alkenyl groups containing up to 6 carbon atoms and (b) a saturated or unsaturated polybasic carboxylic acid containing no more than 2 non-carboxyl carbon atoms per carboxyl group.
2.
A composition according to claim 1 in which at least one of R.
sup.
1 and R.
sup.
2 is an amino group.
3.
A composition according to claim 2 in which the triazine is melamine.
4.
A composition according to claim 2 in which the triazine is propioguanamine.
5.
A composition according to claim 1 in which the polybasic carboxylic acid is a dibasic carboxylic acid.
6.
A composition according to claim 5 in which the dibasic carboxylic acid is oxalic acid.
7.
A composition according to claim 1 in which the salt is melamine mono-oxalate.
8.
A composition according to claim 1 in which the salt is dimelamine oxalate.
9.
A composition according to claim 1 in which the inorganic acid source is ammonium polyphosphate.
10.
A composition according to claim 1 in which the carbon source material is selected from the group consisting of starches, polyhydric alcohols and sugars.
11.
A composition according to claim 10 in which the carbon source material is dipentaerythritol.
12.
A composition according to claim 1 in which the ratio of resin binder to total intumescent additives is in the range by weight of 75:25 to 40:60.
13.
A composition according to claim 12 in which the ratio of total inorganic acid source to carbon source plus blowing agent is in the range 85:15 and 30:70 and the ratio of carbon source to blowing agent is in the range 90:10 to 10:90.
14.
A composition according to claim 1 in which the resin binder is a solution of an unsaturated polyester resin in an unsaturated monomer

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