Polyester-polycarbonate blends useful for extrusion...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C524S140000, C524S147000, C524S414000, C524S417000, C525S439000

Reexamination Certificate

active

07345104

ABSTRACT:
Blends of polycarbonate and copolyester that are capable of being extrusion blow-molded are described. The blends preferably comprise (I) about 1 to 99% by weight of a linear or branched polycarbonate and (II) about 1 to 99% by weight of a mixture of (i) about 40 to 100% by weight of a first copolyester and (ii) about 0 to 60% by weight of a second copolyester. The first copolyester preferably comprises (A) diacid residues comprising terephthalic acid residues, (B) diol residues comprising about 45 to 75 mole percent of 1,4-cyclohexanedimethanol (CHDM) residues and about 25 to 55 mole percent of ethylene glycol residues, and (C) about 0.05 to 1.0 mole percent of the residue of a trifunctional monomer. The optional second copolyester preferably comprises (A) diacid residues comprising terephthalic acid residues and (B) diol residues comprising about 52 to 90 mole percent of CHDM residues and about 10 to 48 mole percent of ethylene glycol residues. Preferably, the average amount of CHDM residues in the copolyester mixture II ranges from 52 to 75 mole percent. It has been surprisingly found that the presence of the trifunctional residues in the first copolyester can impart sufficient melt strength for the blends to be extrusion blow-molded. Containers and shaped articles made from the blends as well as a method of making the articles are also described.

REFERENCES:
patent: 3030335 (1962-04-01), Goldberg
patent: 3317466 (1967-05-01), Caldwell et al.
patent: 3541059 (1970-11-01), Schaper
patent: RE27682 (1973-06-01), Schnell et al.
patent: 3799953 (1974-03-01), Freitag et al.
patent: 3907754 (1975-09-01), Tershansy et al.
patent: 3962189 (1976-06-01), Russin et al.
patent: 4001184 (1977-01-01), Scott
patent: 4001884 (1977-01-01), Herbst et al.
patent: 4010145 (1977-03-01), Russin et al.
patent: 4125572 (1978-11-01), Scott
patent: 4185009 (1980-01-01), Idel et al.
patent: 4286083 (1981-08-01), Kochanowski
patent: 4356299 (1982-10-01), Cholod et al.
patent: 4367186 (1983-01-01), Adelmann et al.
patent: 4431793 (1984-02-01), Rosenquist
patent: 4469861 (1984-09-01), Mark et al.
patent: 4474999 (1984-10-01), Mark et al.
patent: 4983711 (1991-01-01), Sublett et al.
patent: 5017680 (1991-05-01), Sublett
patent: 5142088 (1992-08-01), Phelps et al.
patent: 5191038 (1993-03-01), Krabbenhoft et al.
patent: 5254610 (1993-10-01), Small, Jr. et al.
patent: 5262511 (1993-11-01), Caringi et al.
patent: 5283295 (1994-02-01), Light et al.
patent: 5314949 (1994-05-01), Kozakura et al.
patent: 5420212 (1995-05-01), Light
patent: 5442036 (1995-08-01), Beavers et al.
patent: 5489665 (1996-02-01), Yamamoto et al.
patent: 5494992 (1996-02-01), Kanno et al.
patent: 5498688 (1996-03-01), Oshino et al.
patent: 5668243 (1997-09-01), Yau et al.
patent: 5681918 (1997-10-01), Adams et al.
patent: 5907026 (1999-05-01), Factor et al.
patent: 6022941 (2000-02-01), Mestanza et al.
patent: 6160082 (2000-12-01), Lin et al.
patent: 6225436 (2001-05-01), Eiffler et al.
patent: 6307006 (2001-10-01), König et al.
patent: 6323304 (2001-11-01), Lemmon et al.
patent: 6448334 (2002-09-01), Verhoogt et al.
patent: 6504002 (2003-01-01), Karlik et al.
patent: 6635698 (2003-10-01), Goossens et al.
patent: 6680351 (2004-01-01), Russell et al.
patent: 2004/0138388 (2004-07-01), Percorini et al.
patent: 0 273 144 (1988-07-01), None
patent: 9-59371 (1997-04-01), None
patent: 10095903 (1998-04-01), None
patent: 11-100451 (1999-04-01), None
patent: WO 03/004561 (2003-01-01), None
Plastics Tech Center Data Sheet for Makrolon 1239.
Chemical Abstract registry information for 23128-74-7.

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

Polyester-polycarbonate blends useful for extrusion... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyester-polycarbonate blends useful for extrusion..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyester-polycarbonate blends useful for extrusion... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3980388

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