Method for producing cellulose acylate composition and...

Details Method for producing cellulose acylate composition and... Method for producing cellulose acylate composition and...

2011-08-23

2011-08-23

Ahmed, Sheeba (Department: 1787)

Stock material or miscellaneous articles

Composite

Of carbohydrate

C428S533000, C428S536000, C428S001200, C106S170570, C524S401000

Reexamination Certificate

active

08003224

ABSTRACT:
A method for producing a cellulose acylate composition, which comprises filtering a solution in which cellulose acylate satisfying the following formulae 1 to 3 and having melt viscosity of 150 to 1000 Pa·s at 230° C. is dissolved in a solvent through a filter having a retention particle size of 0.1 to 40 μm, and mixing the filtered solution with a poor solvent to reprecipitate cellulose acylate:in-line-formulae description="In-line Formulae" end="lead"?1.5≦A+B≦3  Formula 1in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0≦A≦2.0  Formula 2in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?1.0≦B≦3  Formula 3in-line-formulae description="In-line Formulae" end="tail"?where A is a substitution degree for an acetyl group of a hydrogen atom which constitutes a hydroxyl group of cellulose, and B is a substitution degree for an acyl group having 3 to 7 carbon atoms of a hydrogen atom which constitutes a hydroxyl group of cellulose.

REFERENCES:
patent: 7521127 (2009-04-01), Oya
patent: 2000-352620 (2000-12-01), None
patent: 2001-188128 (2001-07-01), None
patent: 2003-213004 (2003-07-01), None
patent: 2006-045500 (2006-02-01), None

Affiliated with

Also associated with

Rating

Method for producing cellulose acylate composition and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing cellulose acylate composition and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing cellulose acylate composition and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2654306