폴리(4-메틸-1-펜텐)

폴리(4-메틸-1-펜텐) C화학적 특성, 용도, 생산

화학적 성질

Poly(4-methyl-1-pentene) was first introduced in 1965 by Imperial Chemical Industries Ltd (UK) but since 1975 the polymer has been manufactured solely by Mitsui Petrochemical Industries Ltd. Polymerization is carried out using a Ziegler-Natta catalyst such as titanium trichloride/diethylaluminium chloride in a hydrocarbon diluent at atmospheric pressure and 30-60°C:

The commercial material contains a comonomer, possibly 1-hexene, which enhances clarity. The polymer configuration is predominantly isotactic. Generally, this material has the basic physical properties to be expected from a crystalline polyolefin but in some respects it offers significant improvements over other polyolefins. One outstanding property of poly(4-methyl-l-pentene) is the very low specific gravity, which at 0.83 is the lowest of current polymers. The crystalline melting point is 240°C and the Vicat softening temperature is 179°C; these high values mean that a useful form stability is maintained up to about 200°C. The transparency of the polymer is of a high order, being comparable to poly(methyl methacrylate) and polystyrene. Poly(4-methyl-l-pentene) exhibits resistance to oxidizing and other chemical environments broadly similar to that shown by polypropylene; however, poly(4-methyl-l-pentene) does undergo environmental stress cracking comparable to low density polyethylene. The permeability of poly(4-methyl-I-pentene) to gases and water vapour is considerably higher than that for other polyolefins. Poly(4-methyl-l-pentene) may be extruded and injection moulded using standard equipment. The material has been used in several applications where transparency and heat resistance are required, e.g. medical and laboratory ware.

용도

Coating for paper food containers for microwave and conventional ovens. Release coatings for food and synthetic leather. Molded into medical labware. Film for decorative laminates and printed circuit boards.

폴리(4-메틸-1-펜텐) 준비 용품 및 원자재

원자재

준비 용품

폴리(4-메틸-1-펜텐) 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28180	58
Chongqing Chemdad Co., Ltd	+86-023-61398051 +8613650506873	sales@chemdad.com	China	39916	58
Shaanxi Dideu Medichem Co. Ltd	+86-029-81138252 +86-18789408387	1057@dideu.com	China	3635	58
Zhengzhou Alfa Chemical Co.,Ltd	+8618530059196	sale04@alfachem.cn	China	12477	58
Dideu Industries Group Limited	+86-29-89586680 +86-15129568250	1026@dideu.com	China	29322	58
Alfa Chemistry	+1-5166625404	Info@alfa-chemistry.com	United States	21317	58
Aladdin Scientific	+1-833-552-7181	sales@aladdinsci.com	United States	52927	58
Meryer (Shanghai) Chemical Technology Co., Ltd.	4006608290; 18621169109	market03@meryer.com	China	40241	62
Thermo Fisher Scientific	800-810-5118	cnchemical@thermofisher.com	China	17779	75
Suzhou yacoo science co.,Ltd	0512-87182056 18013166090	lingling.qi@yacoo.com.cn	China	7300	60

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