Modified polytetrafluoroethylene fine powder and modified polytetrafluoroethylene molded product

US2016237189A1 · US · A1

Patent metadata
FieldValue
Publication numberUS-2016237189-A1
Application numberUS-201615136494-A
CountryUS
Kind codeA1
Filing dateApr 22, 2016
Priority dateNov 16, 2004
Publication dateAug 18, 2016
Grant date

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Abstract

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The present invention provides a modified polytetrafluoroethylene fine powder which can be processed into molded articles high in thermal stability, chemical resistance and transparency and for which the extrusion pressure can be lowered. The present invention is a modified polytetrafluoroethylene fine powder, wherein the cylinder extrusion pressure at a reduction ratio of 1600 is not higher than 50 MPa and the haze value of molded article a for measurement formed therefrom is not higher than 60.

First claim

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1 . A method of producing a modified tetrafluoroethylene polymer which comprises: (1) a step of feeding tetrafluoroethylene and at least one species selected from the group consisting of a fluoro(alkyl vinyl ether) represented by the general formula (I): F 2 C═CFO(CF 2 ) n1 X 1   (I) (wherein X 1 represents a hydrogen atom or a fluorine atom and n1 represents an integer of 1 to 6), a vinylic heterocyclic compound represented by the general formula (II):…

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What does patent US2016237189A1 cover?
The present invention provides a modified polytetrafluoroethylene fine powder which can be processed into molded articles high in thermal stability, chemical resistance and transparency and for which the extrusion pressure can be lowered. The present invention is a modified polytetrafluoroethylene fine powder, wherein the cylinder extrusion pressure at a reduction ratio of 1600 is not higher th…
Who is the assignee on this patent?
Daikin Ind Ltd
What technology area does this patent fall under?
Primary CPC classification C08F259/08. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Thu Aug 18 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).