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RUBBER CR, CR-LATEX SKYPRENE (Tosoh)
CR   >   SKYPRENE

Skyprene polychloroprene rubbers are often specified by design engineers because of their superior properties, such as their resistance to cold, heat, abrasion, ozone, oil and chemicals.

CHEMICAL FORMULA / DIAGRAM

Introduction of representative grade

GRADE TYPE MOONEY
VISCOSITY 		10%
SOLUTION
VISCOSITY 		CRISTALLIZATION APPLICATION
B-5A Mercaptan-modified 40~50** Very slow ELECTRICAL WIRE AND CABLES,
AUTOMOTIVE RUBBER PART'S,
HOSES AND BELT,
ANTI VIBRATION,
INDERSTRIL RUBBER GOODF
B-5 45~53** Slow
B-10 447~55**
B-31 36~44** medium
B-30 45~53**
Y-31 90~110**
Y-30S
Y-30SA
Y-30H
Y-30HA EXTRUDED PRODUCTS(HOSES,GASKETS),
CALENDER PRODUCTS
Y-20E 43~53**
P-90 Xanthogen-mondified 40~50** Relatively fast ELECTRICAL WIRE and
cable,
calender products
E-20 43~53** Slow EXTRUDED PRODUCTS(HOSES,GASKETS),
CALENDER PRODUCTS
E-20H 54~74**
E-33 43~53** Medium
R-10 Sulfur-modified 35~55 at the time of production Slow belts, rolls, spongea
(wet suits),
rubber threads,linings
R-22 35~55 at the time of production Medium
505 34~54 at the time of production Relatively fast
G-42 Mercaptan-modified 36~38* 70~130 fast adhesive for high filling,genneral industrial
product.
G-41H 75~90* 250~500
G-40S 81~95* 300~600
G-55 80~96* 300~600
G-40S-1 81~99*
G40T 96~113* 300~900
G-70 1600~2400
TSR-41 40~50** Very slow
TSR-42 40~50** Slow ELECTRICAL WIRE AND CABLES,
AUTOMOTIVE RUBBER
PART'S,
HOSES AND BELT,
ANTI VIBRATION rubber parts,
coated fabrics,
industrial rubber parts.
TSR-44 40~50** Very slow
TSR-48 45~53** Medium
TSR-51 55~75** Very slow
TSR-52 55~75** Slow
TSR-53 55~75** Very slow
TSR-54 60~80**
TSR-61 90~110**

HEAT resistant grade

GRADE type Mooney viscosity 10% solution viscosity Crystallization rate Application
510L 35~47* 80~170 Fast Adhesive for heat
resistance
570 42~64* 100~280 Medium
580 35~47* 60~150 Very slow
580H 57~77* 140~300
CR-LATEX

SKYPRENE LATEX GRADE 는 유성 접착제를 대체해서 개발되었습니다. TOSOH의 GFL series는 건조 접착에 사용되기 위해 디자인 되었고,GEL-FREE 구성과 높은 가곡성을 가진 ZnO, 일반적인 카르복실 클로로프렌 라덱스보다 뛰어난 성질을 가지고 있습니다.게다가 GFL series는 일반적인 음이온 라텍스보다 기계적 특성과 전기적 안정성이 나은 제품입니다.

SKYPRENE GFL-820 GFL-890 GFL-280 SOLVEN TYPE
formulation G-40S 50
SKYPRENE LATEX 100 Y-30S 50
Terpene phenol 20 ZnO 3
Rosin ester 20 Phenolic 20
ZnO 0.5 MgO 2
thickener 5.0 solvent 810
Property at 250C
Viscosity mPa*s 5400 5300 5600 3200
Ph 5.4 5.3 5.7 -
Peel strength(convas/canvas)
after 1 hrs(230C) N/25mm 64 99 90 53
after 7 days(230C) N/25mm 65 100 114 150
after 7 days(800C) N/25mm 7 27 29 34
Water resistance(230C) N/25mm 45 56 75 143
Tack retention time min >120 70 40 60
1) resin emulsion L 100(arakawa chamicals) Test condition
2) resin emulsion E 720(arakawa chamicals) Dry method : 800c for 5min
3) resin emulsion AZ-SW(osaki kogyo) Press : 5.4kg/cm2for 20 sec
4) 10%UH-420(asahidenka kogyo) Peel rate : 100mm/min
5) alkyl phenolic resin TD-773(dianippon & chemicals) Water resistancr : aging(7 days), dipping(3days)

CR-LATEX GRADE:

Grade GFL-820 GFL-890 GFL-280 LA-660 SL-360 LA-502
Polymer type Chloroprene/methcrylic acid Rosin solt Rosin solt Rosin solt
Emulsifying agent Anionic
Solid content 50-56 50-56 50-56 52-56 50-54 50-54
Ph at 25deg.C 2.1-6.0 2.1-6.0 2.1-6.0 12-14 12.5-13.5 12.5-13.5
Specific gravity at 25deg.C 1.12 1.12 1.12 1.10-1.14 1.12 1.124
Gel content None None None Contain Free Contain
Molecular weight Low Low Low Gel High Gel
Crystallization rate Medium Medium Fast Medium fast Medium
Stability mechanical Good Good Good Good good Good
Electrolyte Good Good Good Good Good Good
Storage good good good good good good
freeze unstable unstable unstable unstable unstable unstable
RUBBER