A fibre comprising a colour component comprising an unencapsulated liquid crystal contained in the cavity of a hollow polymeric sheath is provided. The sheath retains the colour component and additional materials may be included to provide a tailored aesthetic effect. The fibre is useful as an artificial hair product and for weaving or knitting into a fabric.

A fibre comprising a colour component comprising an unencapsulated liquid crystal contained in the cavity of a hollow polymeric sheath is provided. The sheath retains the colour component and additional materials may be included to provide a tailored aesthetic effect. The fibre is useful as an artificial hair product and for weaving or knitting into a fabric.

A task is to provide a cloth which is advantageous in that the cloth has extremely excellent flame retardancy, and further has excellent washing shrinkage resistance and excellent hand as well as excellent antistatic properties, preferably in that the whole of the cloth can be uniformly dyed, and a fiber product, and the task is achieved by obtaining a cloth using a spun yarn which comprises a meta-type wholly aromatic polyamide fiber, a modacrylic fiber, and a conductive fiber.

A task is to provide a cloth which is advantageous in that the cloth has extremely excellent flame retardancy, and further has excellent washing shrinkage resistance and excellent hand as well as excellent antistatic properties, preferably in that the whole of the cloth can be uniformly dyed, and a fiber product, and the task is achieved by obtaining a cloth using a spun yarn which comprises a meta-type wholly aromatic polyamide fiber, a modacrylic fiber, and a conductive fiber.

Methods for marking cellulosic products, including cellulosic fibers such as lyocell and cellulosic films, including methods for marking such products with a detectable nucleic acid marker to identify and validate the origin or authenticity of the products or items manufactured using such products. Detectably-marked cellulosic products marked with nucleic acid markers for authentication, validation and tracking are also provided.

Methods for marking cellulosic products, including cellulosic fibers such as lyocell and cellulosic films, including methods for marking such products with a detectable nucleic acid marker to identify and validate the origin or authenticity of the products or items manufactured using such products. Detectably-marked cellulosic products marked with nucleic acid markers for authentication, validation and tracking are also provided.

A recycled polyester fiber is provided. The recycled polyester fiber is made of a raw material by melt spinning. The raw material includes 95.0 wt % to 99.99 wt % recycled polyester pellet formed from recycled bottle chip and 0.01 wt % to 5.0 wt % titanium dioxide slurry. Based on the total weight of the titanium dioxide slurry, the titanium dioxide slurry includes 20 wt % to 50 wt % bio-oil acting as carrier, 50 wt % to 80 wt % titanium dioxide powder, 0.1 wt % to 5 wt % dispersant, 0.01 wt % to 3 wt % antioxidant, and 0.001 wt % to 0.1 wt % dye.

An intrinsic fluorescent green fiber includes 98.00 to 99.00 parts by weight of a carrier, 0.10 to 0.20 parts by weight of a yellow colorant, 0.08 to 0.20 parts by weight of a blue colorant, and 1.00 to 1.50 parts by weight of a titanium dioxide. When a content of 0.10 wt % to 0.20 wt % of the yellow colorant and a balance of the carrier are mixed to form a yellow fiber, the L*, a*, and b* values of the yellow fiber are respectively between 101.27 and 101.72, between −17.61 and −13.47, and between 89.84 and 108.79. When a content of 0.08 wt % to 0.20 wt % of the blue colorant and a balance of the carrier are mixed to form a blue fiber, the L*, a*, and b* values of the blue fiber are respectively between 55.60 and 66.80, between −22.69 and −22.70, and between −37.50 and −31.80.

An intrinsic fluorescent green fiber includes 98.00 to 99.00 parts by weight of a carrier, 0.10 to 0.20 parts by weight of a yellow colorant, 0.08 to 0.20 parts by weight of a blue colorant, and 1.00 to 1.50 parts by weight of a titanium dioxide. When a content of 0.10 wt % to 0.20 wt % of the yellow colorant and a balance of the carrier are mixed to form a yellow fiber, the L*, a*, and b* values of the yellow fiber are respectively between 101.27 and 101.72, between −17.61 and −13.47, and between 89.84 and 108.79. When a content of 0.08 wt % to 0.20 wt % of the blue colorant and a balance of the carrier are mixed to form a blue fiber, the L*, a*, and b* values of the blue fiber are respectively between 55.60 and 66.80, between −22.69 and −22.70, and between −37.50 and −31.80.

Compounds for use in the textile field, and more particularly the use of compounds of the 4-bora-3a,4a-diaza-s-indacene family for the manufacture of fluorescent fibers, the fluorescent compound being chosen from those of formula I: ##STR00001##
Also, processes for producing the fluorescent fibers and also to the uses thereof, notably for the provision of security to products.