D - Textiles – Paper – 06 – M
Patent
D - Textiles, Paper
06
M
117/33, 8/93.25,
D06M 13/00 (2006.01) C09K 3/28 (1980.01) D06M 11/04 (1980.01)
Patent
CA 1171204
ABSTRACT OF THE DISCLOSURE This application deals with the discovery of a highly effective new flame retardant, ammoniumtriborate (NH4-B3O5-3 CH3-OH). Tetraborate ores, when treated in a warm methanolic suspension with ammonia and sulfur- dioxide (or ammoniumsulfite), undergo a three-step transformation. First, through a displacement reaction, ammoniumtetraborate [(NH4)2?B4O7?4H2O] and alkali metal or alkaline earth metal sulfite are obtained. As a second step, ammoniumtetraborate spontaneously loses ammonia and transforms into a new compound, ammonium- triborate (NH4?B3O5?3 CH3-OH). The third step of this reaction series can be initiated by water and heat treat- mint of ammoniumtriborate which undergoes a molecular change to ammoniumpentaborate (NH4?B5O8?4 H2O). Parallel with these main reactions, a side reaction also takes place and methylborate-ammonia adduct [(CH3O)3B?NH3] is formed in low yield (<5%). Upon water treatment, however, the said adduct also stabilizes in the form of ammonium- pentaborate. The methanolic filtrate, its concentrate or freshly prepared water solution of the newly discovered ammoniumtriborate is useful as a very effective flame retardant, anti-smoldering, non-corrosive and fungal resistant agent when appropriately applied on cellulosic fiber insulation material, cotton batting, carpeting, furniture padding, upholstery and other natural or ABSTRACT (continued) synthetic fibers which are subjected only to dry launder- ing. The presence of small amounts of inorganic or organic sulfites (<5%) improve the results of some flame retardation tests and anti-corrosion properties of said ammoniumtriborate and ammoniumtriborate-ammoniumpenta- borate mixtures. The latter effect is due to the reducing (anti-oxidant) properties of sulfites. A reversed addition of reactants to the methanolic suspension of borate ores leads to an alternate mechanism. Thus, sulfurdioxide in methanol generates methylborate from borate ores. Then, ammonia transforms the ester to the methylborate-ammonia adduct which stabilizes in the form of ammoniumpentaborate in the presence of adequate amounts of water and heat.
384088
Sallay Stephen I.
Swabey Ogilvy Renault
LandOfFree
Ammoniumtriborate, an effective new flame retardant does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ammoniumtriborate, an effective new flame retardant, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ammoniumtriborate, an effective new flame retardant will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1237362