초록 ▼

A flame-retardant fiber is made comprising 20 -95% by weight of amino resin condensate of an amino compound and formaldehyde in which the amino compound may be a melamine, combined melamine and guanamine, combined melamine and urea, combined melamine, guanamine and urea, and benzoguanamine and/or ur

A flame-retardant fiber is made comprising 20 -95% by weight of amino resin condensate of an amino compound and formaldehyde in which the amino compound may be a melamine, combined melamine and guanamine, combined melamine and urea, combined melamine, guanamine and urea, and benzoguanamine and/or urea, and in which the chemical bond linking the polymer chain is for the most part methylene linkage and 80 -5% by weight of polyvinylalcohol, the resulting fiber being cured when necessary and having a tensile strength of at least 1.0 g/d., and having a break elongation of at least 5%.

대표청구항 ▼

A flame retardant fiber capable of being crosslinked comprising about 80-5% by weight of polyvinyl alcohol having a degree of hydrolysis (mol %) between about 85 and 99.4 and about 20-95% by weight of an amino resin condensate having at least 50% methylene groups, whereby only a small amount of reac

A flame retardant fiber capable of being crosslinked comprising about 80-5% by weight of polyvinyl alcohol having a degree of hydrolysis (mol %) between about 85 and 99.4 and about 20-95% by weight of an amino resin condensate having at least 50% methylene groups, whereby only a small amount of reactive hydroxy methyl groups are present in said amino resin, based on the formulation: [Figure] wherein Me represents the methylene groups, said amino resin being the condensate of formaldehyde and an amino compound selected from the group consisting of melamine, cyclohexyl melamine, guanamine, benzoguanamine, acetoguanamine, urea, methylurea and mixtures thereof, in the presence of an acid catalyst.