DEFSTAN 68-28/2(1992) : 1992 AMD 1 1995
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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DI-ISOCYANATOTOLUENE TYPES 80/20 AND 65/35
23-05-1997
12-01-2013
Gives the requirements for a mixture of the 2,4 and 2,6 isomers of di-isocyanatotoluene. Two types of material are covered, tupe 80/20 and 65/35, which differ only in respect of the proportion of the two isomers present in the mixture. Both types are suitable for the production of urethane foams, particularly flexible foams.
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