Paracool IDA & IDA-2

Venture Chemical Ltd.
652, Fukano, Muro, Uda City,
NARA 632-0203 JAPAN

Telephone	: +81-745-97-2111
Facsimile	: +81-745-97-2112

http://www.venture-chemical.co.jp

　PARACOOL IDA and IDA-2 are mainly composed of erythritol and xylitol which have a strong cooling effect (endothermic reaction) when they dissolve in water. By applying PARACOOL IDA or IDA-2 to textile apparels, wearers may feel coolness as a result of endothermic reaction of such sugar alcohol as erythritol and xylitol in contact with insensible perspiration and sweat.
　PARACOOL IDA and IDA-2 are special emulsion of coated particles enclosing water soluble erythritol and xylitol. The emulsion is characterized by its nanometer-sized particles and extreme permeability which provides superior washability.
　PARACOOL IDA is applied for cotton, polyester/cotton (E/C), nylon and the like. On the other hands, PARACOOL IDA-2 is specialized for 100% polyester cloth.

＜Chemical properties＞

	PARACOOL IDA	PARACOOL IDA-2
Ionic status	Nonionic
pH	5.0 ± 1.0
Appearance	Transparent emulsion
Solubility	Easily soluble in water

＜Features＞

	PARACOOL IDA	PARACOOL IDA-2
Subject material	Cotton, E/C, Nylon, etc.	100% polyester
Water absorbency	Good	Superior
Binder to be co-used	PARACOOL IDC-1 or IDC-6	PARACOOL IDC-6

1.		PARACOOL IDA is applied for cotton, polyester/cotton (E/C), nylon and the like. On the other hands, PARACOOL IDA-2 is specialized for 100% polyester cloth.
2.		“Cool touch” can be given to cloth as well as water absorbency.
3.		Softness can be given without stiffness.
4.		Excellent workability is due to its superior solubility to water.
5.		Curing process can be applied in accordance with necessary conditions for substrate.
6.		It has dilution stability and compatibility with other chemicals.

＜Method of application＞

PARACOOL IDA or IDA-2 is applied in padding process
Standard dosage and process:　

	For Cotton, E/C, Nylon, etc.		For 100% polyester
Isolated use	PARACOOL IDA	50～100g/ℓ	PARACOOL IDA-2	50～100g/ℓ
With binder	PARACOOL IDA PARACOOL IDC-6*	50～100g/ℓ 20～40g/ℓ	PARACOOL IDA-2 PARACOOL IDC-6	50～100g/ℓ 20～40g/ℓ

* If a cationic chemical is used concurrently, alternatively nonionic binder PARACOOL IDC-1 is available.

Cooling Effect Evaluation

PARACOOL IDA for cotton, E/C and nylon cloth:

			1	2
PARACOOL IDA			Blank (water)	5
PARACOOL IDC-6			Blank (water)	2
Water absorbency (sec.)	Cotton broad	Initial	3～4	2
	Cotton broad	HL-20	―	2
	E/C broad	Initial	19.0	3
	E/C broad	HL-20	―	3
	Nylon knitted	Initial	1.0	1～2
	Nylon knitted	HL-20	7.0	5.0
Cooling effect （℃）	Cotton broad	Initial	―	-2.3
	Cotton broad	HL-20	―	-1.8
	E/C broad	Initial	―	-2.1
	E/C broad	HL-20	―	-1.6
	Nylon knitted	Initial	―	-1.7
	Nylon knitted	HL-20	―	-1.2

PARACOOL IDA-2 for 100% polyester cloth:

		1	2
PARACOOL IDA-2		Blank (water)	5
PARACOOL IDC-6		Blank (water)	2
Water absorbency (sec.)	Initial	1.0	1.0
Water absorbency (sec.)	HL-20	180 or more	1.0
Cooling effect * （℃）	Initial	―	-3.8
Cooling effect * （℃）	HL-20	―	-3.6

　　* Maximum temperature difference in comparing with blank solution

Condition: Dipping →　Nipping →　Drying (110ºC x 3 min.) →　Curing (160ºC x 1 min.)
Note: Binder (PARACOOL IDC-6 or alternatively PARACOOL IDC-1) should be used together for polyester fiber. Otherwise yellowing may occur by curing process.

What is cool touch finish?

Cool touch finish does not mean textile finishing to make “good looking in appearance” is this context, but provides cool handling touch realized by using fiber material that offers cool handle by itself and/or a special chemical agent to give cooling effect.
Cool touch by application of heat transfer is usually produced by chemical agent mainly composed of phase-change material (PCM) which may help heat transfer from human body to treated cloth. There is instant coolness when contacting skin to the cloth. However, there might be hot and humid sensation when keeping in contact because treated cloth tends to be less permeable.

On the contrary, cool touch by endothermic reaction is produced by PARACOOL IDA and IDA-2 mainly composed of erythritol and xylitol which may absorb heat while dissolving in water (moisture and perspiration of the body in this context). There is moderate coolness and comfort while wearing cloth treated by PARACOOL IDA or IDA-2, absorbing moisture (perspiration) of the body.

A hand was placed on sample cloth for 3 minutes. And thermographic image was observed a minute later.

Blank cloth

Treated by PARACOOL IDA

　　　　　　　Heat of solution

ubstance	Heat of solution (cal/g)
Xylitol	-34.8
Sorbitol	-24.1
Glucose	-13.8
Lactose	-12.6
Sucrose	-4.5
Erythritol	-42.9

Heat of solution: the energy required to dissolve one gram of the substance
　Heat of solution of xylitol: - 34.8 cal/g
　1 calorie is the heat to raise 1 gram of water by 1 degree Celsius
　1 gram of xylitol may lower the temperature of 10 grams of water 3.48 degree Celsius

Before adding xylitol

Water temp.: 28.7℃

After dissolved xylitol

Without xylitol : 28.3℃

With xylitol : 23.1℃

＜Precautions＞

1.		Preliminary tests should be carried out to check the effect to handling touch and color fastness as well as compatibility with other chemicals.
2.		Finished cloth should be packed in dry state. If it is packed in wet state (soon after pressing a steam iron), it might be whitened.
3.		The product is stable under normal condition. It is ideal to store it at cool (temperatures between 5 and 35ºC) dark place.

Thermographic image: visible denim pants sustainable cool feeling effect
performed with PARACOOL IDA

〔　Summary　〕

1.		Sustainability of cool feeling effect (repeating cool feeling effect by every perspiration one shed) of denim pants treated by PARACOOL IDA is measured via thermography.
2.		In comparing to untreated part, treated part offers a lower temperature which is due to endothermic reaction by spraying water as virtual perspiration.
3.		5 minutes later after sprayed, treated part still offers a lower temperature while untreated part reverts to or may be heated more than initial state as the result of hydration heat of cotton fiber. And the same result is available when repeating the process three times.
4.		The result shows that cloth treated by PARACOOL IDA gives sustainable cool feeling effect which may

〔　Test materials　〕

Specimen		:Denim pants consisting of blank and cool feeling finish
Left)		Blank
Right)		10% soln. PARACOOL IDA & 6% soln. PARACOOL ID-6 Padding→ Drying (110ºC x 3 min.)→ Curing (160ºC x 2 min.)

〔　Test method　〕

1.		Specimen is worn by subject for 5 minutes to stabilize surface temperature.
2.		Water is sprayed on the thigh parts (to simulate perspiration to give moisture).
3.		The variation in thermograph is monitored right after sprayed, 1 minute later and 5 minutes later. Note: Subject is seated as the specimen closely contacts the thigh parts, so that the body temperature may be transmitted to specimen. Thermographic image at the thigh parts is taken at specified intervals.
4.		Repeat the above 1 to 3 at least twice. [Hygrothermal condition: 23 - 25 ºC / 40 – 50%]

〔　Evaluation of sustainable cool feeling effect via thermography　〕

	First		Second		Third
	Blank	Treated	Blank	Treated	Blank	Treated
Before spray (5 minutes later after wearing)
Right after sprayed
1 min. later
5 min. later

Cooling effect (used infrared photography)

[　Material　] 100% polyester dyed fabric（shoes insole, fabric）

[　Testing recipe　]

	1	2
PARACOOL　IDA-2	10%	20%
PARACOOL　IDC-6	4%	4%

[　Process & Conditions　]
For fabric：
Recipe: No1, 2
Process : Padding method, Pick up: 78%, Dry: 110℃×4min

For insole
Recipe: No.2
Hand spray (quantity for application 210g/㎡)　→　 Dry : 110℃ × 30min.
The amount of processing agent adhesion of hand spray was same as Pad processing (Pick up85%).

Surface thermometry by infrared photography
[ Test Method ]

1.		Put feet on test samples for a minute.
2.		Take infrared photographies after remove feet immediately. Similarly, take two more when a minute later, and 2minutes later.

Surface thermometry (use infrared photography)
[ Material ]　Your cloths
[ Testing recipe ]　 Recipe: No1 IDA-2 / IDC-6、10% / 4%

	Infrared photography		Appearance
	Non treated	Treated
Put feet on test samples for three minutes.
Immediately After remove feet
20second later
1minute later
2minutes later

Surface thermometry (use infrared photography)
[ Material ]　Your cloths
[ Testing recipe ]　 Recipe: No2 IDA-2 / IDC-6、20% / 4%

	Infrared photography		Appearance
	Non treated	Treated
Put feet on test samples for three minutes.
Immediately After remove feet
20second later
1minute later
2minutes later

Surface thermometry (use infrared photography)
[ Material ]　Your cloths (Shoe insoles)
[ Testing recipe ]　Recipe: No2 IDA-2 / IDC-6、20% / 4%

	Infrared photography		Appearance
	Non treated	Treated
Put feet on test samples for three minutes.
Immediately After remove feet
20second later
1minute later
2minutes later

The information herein offered is based on the best of our knowledge at present. However, we are not obliged to guarantee the matter, as the result of application may vary depending on conditions adopted. Preliminary tests are, therefore, recommended in all cases. 　Please refer to MSDS regarding handling of the products.