Copolymerization product of N-vinylmethylpyrazole and divinyl cr

Details Copolymerization product of N-vinylmethylpyrazole and divinyl cr Copolymerization product of N-vinylmethylpyrazole and divinyl cr

1976-08-03

1978-06-06

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526202, 526219, 526232, 526263, C08F21236, C08F21814, C08F22020, C08F22606

Patent

active

040937925

ABSTRACT:
In accordance with the present invention, a copolymerization product of N-vinylmethylpyrazole with a divinyl cross-linking agent has the following formula of its elemental unit: ##STR1## wherein R is CH.sub.3 in the position 3 or 5; A is a divinyl cross-linking agent, viz. divinylbenzene, diallylmaleate, ethyleneglycol dimethacrylate, diethyleneglycol dimethacrylate, triethyleneglycol dimethyacrylate; it has a sorption capacity with respect to the platinum group metals and silver: E.sub.Au = 420 to 785 mg/g of the sorbent E.sub.Ag = 320 to 450 mg/g of th sorgent, E.sub.Pd = 130 to 170 mg/g of th sorbent, E.sub.Pt = 180 to 230 mg/g of the sorbent and a swelling factor in water of 2 to 4 ml/g. The method for preparing said copolymerization product of N-vinyl methylpyrazole with a divinyl cross-linking agent according to the present invention comprises reacting N-vinylmethylpyrazole of the formula: ##STR2## wherein R is CH.sub.3 in the position 3 or 5, with a divinyl cross-linking agent, viz. divinylbenzene, diallylmaleate, ethylenglycol dimethacrylate, di ethyleneglycol dimethacrylate, triethyleneglycol dimethacrylate in the pesence of a radicaltype initiator at 70.degree.-100.degree. C in a suspension medium, followed by isolation of the desired product.

REFERENCES:
patent: 3063978 (1962-11-01), Lynn
patent: 3718631 (1973-02-01), Grosmangin et al.

Affiliated with

Also associated with

Rating

Copolymerization product of N-vinylmethylpyrazole and divinyl cr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Copolymerization product of N-vinylmethylpyrazole and divinyl cr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copolymerization product of N-vinylmethylpyrazole and divinyl cr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1494121