[특허]Oriented polymeric microporous films

Oriented polymeric microporous films 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-027/00 C08J-009/00 C08F-110/00
출원번호	US-0749213 (1991-08-23)
발명자 / 주소	Jacoby Philip (Naperville IL) Bauer Charles W. (Batavia IL) Clingman Scott R. (Glen Ellyn IL) Tapp Willilam T. (Marietta GA)
출원인 / 주소	Amoco Corporation (Chicago IL 02)
인용정보	피인용 횟수 : 67 인용 특허 : 0

초록 ▼

Polyolefin resin compositions and oriented microporous films prepared from same comprising an ethylene-propylene block copolymer having an ethylene content of about 10 to about 50 wt %, a propylene homopolymer or random propylene copolymer having up to about 10 wt % of a comonomer of ethylene or an

대표청구항 ▼

A polymeric composition in the form of an oriented microporous film having microvoid cells and interconnecting pores between the cells and a moisture vapor transmission rate as determined according to ASTM E-96, procedure E, of about 500 g/m2/24 hr or greater wherein the polymeric composition comprises: about 5 to about 95 parts by weight of a component A comprising an ethylene-propylene block copolymer having an ethylene content of about 10 to about 50 wt%, about 95 to about 5 parts by weight of a component B comprising a propylene homopolymer or random copolymer having up to about 10 wt% of a comonomer of ethylene of an a4 to 8 carbon atoms, 0 to about 20 parts by weight, per 100 parts by weight of components A and B, of a component C comprising a low molecular weight polypropylene having a melt viscosity of about 50 to about 1,000 poise measured at a shear rate of 136 sec-1 and 190°C., 0 to about 30 parts by weight, per 100 parts by weight of components A and B, of a component D comprising calcium carbonate, and 0 to about 50 ppm, per 100 parts by weight of components A and B, of a component E comprising a beta-spherulite nucleating agent with the proviso that when the weight ratio of component A/component B is about 5-30/95-70, component E is present at 0.1 to about 10 ppm, and that when the weight ratio of component A/component B is about 30-95/70-5, component C is present at (a) about 5 to about 20 parts by weight when the polymeric composition is substantially free of component D or of components D and E, and (b) about 1 to about 10 parts by weight when the polymeric composition has about 0.1 to about 10 ppm of component E and about 5 to about 30 parts by weight of component D.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Oriented polymeric microporous films 원문보기

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Oriented polymeric microporous films 원문보기

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