TOPWHITE OPTICAL BRIGHENER AGENT DT

Product Description

TOPWHITE DT (C.I.135) 

1. CHEMICAL STRUCTURE

Benzoxazol derivatives
PROPERTIES

Appearance	Yellow dispersion
Melt Point	187-189ºC
Dyeing shade	Slightly reddish
Fastness to   -Light   -Washing 60ºC/95ºC   -Dry heat 30s, 180ºC / 30s 200ºC	6 ~ 7  5 / 5 5 / 3 ~4

 

1. APPLICATION

It's suitable for Optical Brightening Agent on polyester and its blends. It's similar as Uvitex ER.

1. PROCESS METHOD

1, Exhaustion Process: dosage: 0.2-2.0%owf.Temperature: 95-100ºC, time:
50-60min.
2, HT Process: dosage: 0.2-2.0%owf.Temperature:120-130ºC,time:20-40min.
3, Pad-steaming Process: dosage:2-20g/l. Temperature: 150-165ºC,time:3-8min.
4, Pad-bake Process: dosage:2-20g/l. Temperature:150-170ºC,time:30sec.
5,Single-stage optical brightening&resin finishing: dosage:2-20g/l.Silicone softener:10-40g/l,drying time: 130ºC*1min, curing time: 150-170ºC*2-3min
Detailed process is according to customer's request.

1. STORAGE & PACKING

Sealed in storage, keeping date is 12 months under room temperature.
25kg net in plastic drum.