It is difficult to dye, is generally resistant to acids, alkalis and micro-organisms and has a very good sunlight resistance. Polyester is stained easily by oils. Acrylic -Modacrylic A synthetic fibre. Moderately high strength with good durability. The handle is soft and the drape good.
Acrylic stretches easily, so has poor dimensional stability.
A poor conductor of heat, it is warm to wear although its poor absorbency causes it to sometimes feel clammy. Resistant to acids, micro-organisms, insects and sunlight, but is effected by alkalis after considerable time. Bleaching should be avoided. Not easy to dye. A synthetic fibre with low strength but very good elasticity .