Increased throughput in foaming and other melt fabrication of po

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

264 54, 521 92, 521138, C08J 908

Patent

active

052887642

ABSTRACT:
Disclosed is a process for obtaining polyester articles, including foamed articles, containing low levels of extractable branching agent. The process comprises: (1) forming a molten mixture comprising (i) a major amount of a first resin composition comprising polyester and from 0 up to about 1 wt. % of a compound capable of branching the polyester, and (ii) a minor amount of a second polyester resin composition comprising at least about 50 wt. % polyester resin and greater than about 2 wt. % of a compound capable of branching the polyester, wherein the relative amounts of (i) and (ii) are such that said molten mixture comprises from about 0.1 wt. % to about 1 wt. % of said branching compound; (2) adding a blowing agent to the molten mixture; and (3) extruding the resultant mixture to obtain a foam. The invention is also directed to the second composition used in the above process, and foamed polyester articles obtained from the process.

REFERENCES:
patent: 4284596 (1981-08-01), Imokuchi 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

Increased throughput in foaming and other melt fabrication of po does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Increased throughput in foaming and other melt fabrication of po, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Increased throughput in foaming and other melt fabrication of po will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-171778

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