Method for the production of aliphatic copolyester film

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

528272, 528275, 528296, 528301, 528302, 264165, B29C 4700

Patent

active

054457785

ABSTRACT:
There is disclosed a method for the production of aliphatic copolyester film.
The method comprises the steps of: applying esterification or ester-interchange to a reaction mixture of at least one acid component selected from the group consisting of succinic acid, succinic anhydride and succinic acid ester, 1,4-butanediol as a main diol component, 2,2-dimethyl-1,3-propanediol of 1 to 30% by mole based on the mole of the acid component, multifunctional compound 0.01 to 1% by mole, based on the mole of the acid component, multifunctional compound have more than three functional group of hydroxy group or carboxy group at below 220.degree. C., so as to give an oligomer mixture; polycondensing the oligomer into an aliphatic copolyester at a temperature of 240.degree. to 260.degree. C. under reduced pressures of not more than 1 mmHg in the presence of a catalyst; and melt-extruding the aliphatic copolyester using T die.
Improved in draw ratio, the aliphatic copolyester film provided by the method can be applied to various applications, such as films, bottles, glass fiber-reinforced plastics, adhesives, paints.

REFERENCES:
patent: 4166873 (1979-09-01), Gilliam et al.
patent: 4894430 (1990-01-01), Hohlein et al.
patent: 4910292 (1990-03-01), Blount
patent: 4971863 (1990-11-01), Hart
patent: 4983711 (1991-01-01), Sublett et al.
patent: 5306787 (1994-04-01), Takiyama et al.
patent: 5310782 (1994-05-01), Takiyama et al.
patent: 5328745 (1994-07-01), Kurihara et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for the production of aliphatic copolyester film 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 the production of aliphatic copolyester film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the production of aliphatic copolyester film will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1818149

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.