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Inorganic anti-mite

SEGUROCERA

SEGUROCERA is inorganic anti-dustmite material that combined boric acid, alkaline earth, silica acid etc. at high temperature, and then pulverized this composition from several µm to several ten µm.
SEGUROCERA doesn't kill mites by volatility substances such as nerve poison used for ordinary organic anti-dustmite material, nor repel mites by volatilizing organic substances which mites dislike. SEGUROCERA disturbs the moisture balance of mite, and leading them to some condition as thirst. It makes mite's reproduction ability weaken, and inhibits their multiplication. As it is inorganic, it has a long time effect against dustmite and does not have hazardous effect to human beings at all.

Mite in a culture medium
without SEGUROCERA

Mite in a culture medium
with 1% of SEGUROCERA

Mite in a culture medium
in a dry condition

Features

  • Being ceramics, no odor, no volatility.
  • Enable to compound into resin due to it's high heat-resistance
  • Long product life and superior in stability during storage
  • High level of safety

The necessity to be anti-dust mite

(1)The condition of mite multiplying

Such mites which are apt to cause allergy as D.Pteronissius and T. putrescentiae have a worldwide distribution, and these mites vigorously multiply under the condition at temperature 20℃ to 30℃, higher than 60%R.H. (the best condition is 60 to 80%R.H.) They prefer to live close to human living space, especially in carpet, sofa, bedding, stuffed doll, and so on. because there are many such food for mites as dirt, dandruff etc. ,and there are moisturized comfortably by human sweat.

(2)Influence of mites for human body

Allergy caused by mites has been being a serious problem in the world. Especially recent home environment which controlled room temperature in highly sealed house is apt to good condition for mites to multiply through all season. In consequence, House dustmite which consist of mites dead body and their waste has been increasing rapidly in house. This allergen value are higher than other substances, and even a few, these are easily to grow human an allergy as asthma, Rhinitis, Conjunctitis, Dermatitis.

Data

Anti-mite effect

Anti-mite effect
Carpet pile containing SEGUROCERA
PA pile with 1.0%
of SEGUROCERA		 Beginning After 4 weeks After 8 weeks
N1 N2 N3 N1 N2 N3 Total Effect(%) N1 N2 N3 Total Effect(%)
Blank 109 123 116 197 184 188 569 - 589 639 642 1867 -
Sample 105 109 117 331 41.8 16 8 10 34 98.1
Non-woven cloth containing SEGUROCERA
PP non-woven cloth
with 2.0%
of SEGUROCERA		 Beginning After 4 weeks After 8 weeks
N1 N2 N3 N1 N2 N3 Total Effect(%) N1 N2 N3 Total Effect(%)
Blank 106 103 124 3223 2978 2880 9081 - 3605 3692 2871 10168 -
Sample 1593 1786 1509 4888 46.2 333 611 584 1528 85.0

Mite used: Dermatophagides pteronyssinus

PP backing cloth containing SEGUROCERA
PP woven backing cloth
with 1.0%
of SEGUROCERA		 Beginning After 4 weeks After 8 weeks
N1 N2 N3 N1 N2 N3 Total Effect(%) N1 N2 N3 Total Effect(%)
Blank 119 110 124 876 680 962 2518 - 9253 8926 9603 27782 -
Sample 60 122 96 278 89.0 192 177 145 514 98.1

Durability

Wash ability of carpet made up threads or piles containing SEGUROCERA
Polyester threads After 4 weeks After 8 weeks
N1 N2 N3 Total Effect(%) N1 N2 N3 Total Effect(%)
Blank 1568 876 888 3332 - 10588 19732 12152 42472 -
3% SEGUROCERA in thread 500 676 880 2056 38.3 224 468 1016 1708 96.0
After dying & 10 times washing 612 572 304 1488 55.3 3632 4260 3180 11072 73.9

Washing condition: in accordance with JIS L 0217-103
Dying condition: 130℃. x 60min
Mite used: T.putrescentiae

Nylon pile After 4 weeks After 8 weeks
N1 N2 N3 Total Effect(%) N1 N2 N3 Total Effect(%)
Blank 662 868 988 2518 - 686 952 1114 2852 -
3% SEGUROCERA in thread 274 128 278 660 73.8 18 16 8 42 98.5
After 10 times washing 462 374 484 1320 47.6 62 78 54 194 93.1

Washing condition: 2 step office cleaning method
Mite used: T.putrescentiae

Effect duration by accelerated test

Comparing with organic mite repellent
Accelerated condition
81℃ x 16 hours = Equivalent to 1year
81℃ x 48 hours = Equivalent to 3years
81℃ x 80 hours = Equivalent to 5years
81℃ x 160 hours = Equivalent to 10years		 After 1 week
N1 N2 N3 Total Effect(%)
Organic Blank 1517 1160 1590 4267 -
At start 250 380 285 915 73.6
81℃ x 48 hours 901 1096 1260 3257 23.7
SEGUROCERA Blank 1968 2541 1906 6415 -
At start 18 36 23 77 98.8
81℃ × 48 hours 23 27 11 61 99.0
81℃ × 80 hours 29 24 23 76 98.8
81℃ × 160 hours 24 19 27 70 98.9

Comparison of Anti-dust mite materials

It is only SEGUROCERA that is inorganic anti-dust mite material and have high safety

Repellent
(1) Toluamide compound
(2) Organic acid ester compound
(3) Pyrethroid compound		 Repels mite by volatile materials Safety: Allergy by volatile materials, weak toxicity
Heat-resistance: Weak, easy to decompose or volatility
Odor: Yes
Volatility: Yes
Life span: Short (six months to one year)
Miticides
(1) Organic phosphorous compound
(2) Organic acid		 Kill mites by neurotoxin Safety: Strong toxicity
Heat-resistance: No decompose and volatile
Odor: Yes
Volatility: Yes
Life span: Very short (less than six months)
Anti-mould materials
(1) Organotin compound
(2) Ether compound (Triclosan)		 Decrease mite in number by reducing mould as one of bait for mites Safety: Low (possibility to generate dioxin)
Heat-resistance: Low
Odor: No
Volatility: Little
Life span: Short (one years)
Multiplication inhibitors
SEGUROCERA		 Put into disorder mites moisture balance to prevent reproduction Safety: High ( LD50>2000mg/kg)
Heat-resistance: High (higher than 550℃.)
Odor: No
Volatility: No
Life span: Long (five to ten year)

Acute oral toxicity

There was no case of abnormal reaction or death by single oral administration of 2000mg/kg of SEGUROCERA to mice

  • Acute oral toxicity

    There was no case of abnormal reaction or death by single oral administration of 2000mg/kg of SEGUROCERA to mice

  • Primary skin irritation

    No skin irritation response was observed an albino rabbits during or after the skin irritation test suggested in the OECD Chemical Substance Toxicity Test Guidance.(1981)

  • Mutagenicity

    The mutagenicity test based on the bulletin No.77 of the Labor Ministry of Japan (1st Sep.1989 )resulted in no increase in reverse mutation and mutagenicity was confirmed to be negative.

  • Skin sensitization

    The skin sensitization test using maximization method demonstrated no skin sensitization on guinea pigs.

Application of SEGUROCERA

Non-volatile SEGUROCERA is the best material for using in enclosed space such as house, car, train.

Plastics Backing cloth for carpet, Cushion sheet, Wall paper, Cushion floor etc.
Fiber Carpet pile, Bed files, Bet sheet, Blanket, Sheet cover, Blanket etc.
Non-woven cloth Basing cloth for carpet, Bed inner materials, Car interior etc.
Paint Furniture, Floor paint, Wall paint etc.
Building materials Floor material, Wall material etc.
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