KUMHO POLYCHEM

INNOPRENE 1000,2000 Series

Kumho Polychem Co.,Ltd. is largely contributing to the stabilization of demand and supply in the EP(D)M market and also to the automobile industry as the best EP(D)M manufacturer in Korea, and is balancing with the world-famous enterprises through continuous R&D and producing various products of excellent quality.
We have developed thermoplastic rubber, innoprene, which has the elasticity of thermosetting rubber and the compatibility of thermoplastic based on our 20 year’s experience in the production and the research technology of EP rubber.

Catalogue Inquiries

Overview

Various innoprene products supplied by Kumho Polychem Co.,Ltd. are thermoplastic elastomers of polyolefin type, and they can replace the existing thermosetting products of EP(D)M or CR rubber. The material is also able to replace soft PVC that is recently being discussed for its environmental problems. Moreover, the material is of low weight, therefore it is possible to develop light-weighted products.
Innoprene is a product that is already completely cross-linked and there is no need for an extra cross-link process before its ultimate use. Also, it is possible to simplify the processes and reduce the prime cost as it is an environment-friendly material allowing for an easy recycle of scraps resulted from processing.
Innoprene is possible to mold using devices of extrusion molding, injection molding, blow molding and calendar processing as in normal plastic resin. Especially, it is among the new materials that are possible to apply in extrusion area. (automobile glass run channel and construction window gasket etc)

1Light weight
2Excellent chemical resistance and heat resistance
3Excellent electricity feature
4Low permanent expansion and compression rates
5Excellent resistance against dynamic fatigue
6Excellent tear strength
7Excellent ozone-proof and weatherability
8Recycle

INNOPRENE(Black)

INNOPRENE(Natural)

Typical Properties(ASTM) 물성표
Properties		ASTM Test Method	TEST Condition	Units	GRADE(N/B)
Properties		ASTM Test Method	TEST Condition	Units	1350	1450	1550	1640	1730	1800	1870	2400	2500
Hardness		ASTM D2240	25℃	Shore	38A	46A	55A	65A	74A	80A	89A	40D	40D
Specific Gravity		D792	25℃	-	0.95	0.95	0.95	0.95	0.96	0.96	0.95	0.94	0.94
Tensile Strength		D412	25℃	kgf/cm²	45	50	60	70	90	100	150	200	210
Elongation		D412	25℃	%	670	650	620	600	590	580	570	560	550
100% Modulus		D412	25℃	kgf/cm²	10	15	20	25	30	35	60	80	100
Tear Strength		D624	25℃	kg/cm	20	25	30	35	40	50	80	85	110
Heat Aging	Tensile Strength	D573	150℃ x 168hr	Change in Property (%)	-6	-6	-7	-8	-12	-17	-17	-20	-23
Heat Aging	Elongation	D573	150℃ x 168hr	Change in Property (%)	-10	-10	-10	-12	-15	-16	-17	-17	-25
C-set		D395B	120℃ X 70hr	%	38	40	43	45	50	60	70	75	75
C-set		D395B	70℃ X 22hr	%	30	30	23	35	39	45	55	65	70
Fluid Resistance (% Weight Change)	50% NaOH	D471	25℃ X 168hr	%	+1	+1	+1	0	0	0	0	0	0
Fluid Resistance (% Weight Change)	10% HCl	D471	25℃ X 168hr	%	+4	+3	+3	+2	+3	+2	+2	+1	+1
UV Resistance		SAE J1960	1000hr	△E*	< 1.0	< 1.0	< 1.0	< 1.0	< 1.0	< 2.0	< 2.0	< 2.0	< 2.0

Typical Properties(ISO) 물성표
Properties		ISO Test Method	TEST Condition	Units	GRADE(N/B)
Properties		ISO Test Method	TEST Condition	Units	1350	1450	1550	1640	1730	1800	1870	2400	2500
Hardness		ISO 868	25℃	Shore	38A	46A	55A	65A	74A	80A	89A	40D	40D
Specific Gravity		ISO 1183	25℃	-	0.95	0.95	0.95	0.95	0.96	0.96	0.95	0.94	0.94
Tensile Strength		ISO 37	25℃	kg/cm²	45	50	60	70	90	100	150	200	210
Elongation		ISO 37	25℃	%	670	650	620	600	590	580	570	560	550
100% Modulus		ISO 37	25℃	kg/cm²	10	15	20	25	30	35	60	80	100
Tear Strength		ISO 34-1	25℃	kg/cm	20	25	30	35	40	50	80	85	110
Heat Aging	Hardness	ISO 188	150℃ x 168hr	Shore	+1	+1	+1	+1	+1	+2	+2	+3	+3
	Tensile Strength	ISO 188		Change in Property (%)	-6	-6	-7	-8	-12	-17	-17	-20	-23
	Elongation	ISO 188		Change in Property (%)	-10	-10	-10	-12	-15	-16	-17	-17	-25
Low Temperature Brittleness		ISO 812, Type B		℃	-62	-63	-66	-64	-64	-61	-61	-58	-56
C-set		ISO 815 Type A	120℃ X 70hr	%	38(38)	40(40)	43(43)	45(45)	50(50)	60(60)	70(70)	75(75)	75(75)
C-set		ISO 815 Type A	70℃ X 22hr	%	30	31	23	35	39	45	55	65	70

※ Abobe data are typical value so that could be different from serviced properties.
* N:Natural, B:Black

Recycle

Innoprene as thermoplastic rubber has advantage that the scrap can be recycled.
When the scrap is recycled and processed, there is no large influence on the nature of the material.
The proportion of recycle is limited at 80% to minimize problems for processing.

Purpose of use

Purpose of use
Automobile	Tubing, gasket, door gap closer, dust cover, shock plate, interior material, tube and windshield space etc.
Building	Plate glass gap closer, expansion joint, bulb gap closer, window wind gap closer and solidification block etc.
Office equipment	Vibration isolation material, feed roller and computer pit etc.
House equipment	Hose connector, door gap closer, interior and exterior material hose, gasket, motor mount, lever peak, cleaner wheel, insulation syringe and optical isolator ring etc.
Electric equipment	Power transmitter/receiver, connector, mine cable, control cable, coil cord and power circuit cable etc.
Sports equipment	Grip, diving equipment, fishing rod grip and ski pole handle etc.

Storage and handling

Innoprene is manufactured as pellet for supply, and it is easy to store and handle.

Innoprene is a substance that absorbs moist well; therefore the moist in surrounding area may substantially be absorbed. Innoprene exposed to moist will have its surface not smooth and the overall physical ability will be lowered. So, Innoprene needs to be dried enough for 2~3 hours at 80~90℃ before processing.

Refer to MSDS to process innoprene.