Melt polymerization process for increasing the molecular weight

Details Melt polymerization process for increasing the molecular weight Melt polymerization process for increasing the molecular weight

1975-05-05

1980-01-15

Danison, Walter C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

525243, 526 71, 528307, C08G 6322, C08G 6318

Patent

active

041840330

ABSTRACT:
A novel melt polymerization process is disclosed for increasing the molecular weight of poly(1,4-butylene terephthalate). This process comprises adding a compound containing at least two aliphatic or cycloaliphatic hydroxyl groups to a low molecular weight poly(1,4-butylene terephthalate) and thereafter melting the polymer in a vacuum until the desired molecular weight is reached.

REFERENCES:
patent: 3453240 (1969-07-01), Plaster et al.
patent: 3592876 (1971-07-01), Brinkmann et al.
patent: 3635899 (1972-01-01), Doerr et al.
patent: 3787370 (1974-01-01), Shima et al.
patent: 3803099 (1974-04-01), Okuzumi
patent: 3817935 (1974-06-01), Beer
Chemical Week, Mar. 13, 1974, pp. 34-35.

Affiliated with

Also associated with

Rating

Melt polymerization process for increasing the molecular weight does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Melt polymerization process for increasing the molecular weight , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Melt polymerization process for increasing the molecular weight will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1028989