Process for the preparation of granular oxymethylene polymers ha

Details Process for the preparation of granular oxymethylene polymers ha Process for the preparation of granular oxymethylene polymers ha

1978-08-08

1980-03-25

Phynes, Lucille M.

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

Synthetic resins

From aldehyde or derivative thereof as reactant

528270, 528481, 528496, 528503, C08G 228

Patent

active

041951581

ABSTRACT:
Oxymethylene polymers (POM) are obtained in a granular form, by cooling a POM solution or dispersion, whose temperature is above the sintering temperature of the POM, to a temperature slightly below the sintering temperature of the POM, and extracting from the suspension obtained only those POM particles which show a grain diameter of more than 70 .mu.m. As solvent or dispersing agent as well as precipitating and cooling agent there is used a mixture of methanol and water with a methanol content of at least 75% by weight. The POM obtained is suitable as engineering plastic material for the manufacture of shaped articles having improved mechanical properties.

REFERENCES:
patent: 3505292 (1970-04-01), Smith et al.
patent: 4046738 (1977-09-01), Sextro et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1402414