Process for preparation of oxymethylene polymers in a...

Details Process for preparation of oxymethylene polymers in a... Process for preparation of oxymethylene polymers in a...

2011-05-17

2011-05-17

Gulakowski, Randy (Department: 1766)

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

Synthetic resins

From carboxylic acid or derivative thereof

C528S425000, C528S232000

Reexamination Certificate

active

07943726

ABSTRACT:
A process and an apparatus are described for preparation of oxymethylene polymers. This process encompasses polymerization, in a homogeneous phase, of a monomer which forms oxymethylene groups, as far as 90% of maximum conversion in the presence of an acetal of formaldehyde and of an initiator for cationic polymerization, followed by deactivation of the reaction mixture. The resultant oxymethylene polymers have alkyl ether end groups and are extremely stable.

REFERENCES:
patent: 3161616 (1964-12-01), Brown et al.
patent: 3393179 (1968-07-01), Leverett
patent: 3998791 (1976-12-01), Radici et al.
patent: 4097453 (1978-06-01), Radici et al.
patent: 4431794 (1984-02-01), Sadlowski et al.
patent: 5587449 (1996-12-01), Fleischer et al.
patent: 1158709 (1963-12-01), None
patent: 1445255 (1968-11-01), None
patent: 3147309 (1983-06-01), None
patent: 1009884 (1965-11-01), None
patent: 04/114003 (1992-04-01), None
patent: 04/145114 (1992-05-01), None

Affiliated with

Also associated with

Rating

Process for preparation of oxymethylene polymers in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparation of oxymethylene polymers in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparation of oxymethylene polymers in a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2682512