Process for producing styrene based polymer and molded articles

Details Process for producing styrene based polymer and molded articles Process for producing styrene based polymer and molded articles

1997-03-26

1999-03-09

Dawson, Robert

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526217, 526220, 526222, 526223, C08F 238

Patent

active

058802320

ABSTRACT:
There is provided a process for producing a styrene based polymer by polymerizing a styrene compound, the process including the step of continuously feeding a styrene compound and one or more sulfide compounds to a reaction zone. The sulfide compounds include dithiocarbamate group-containing sulfide compounds, aryl or arylalkyl group-containing sulfide compounds and thiazole group-containing sulfide compounds. The polymerization is carried out under stirring conditions to maintain the composition of the reaction mixture in the reaction zone uniform and at a predetermined conversion within a range of from 40 to 80% by weight. Polymerization reaction mixture is continuously removed from the reaction zone. The styrene based polymer produced is narrow in molecular weight distribution, and excellent in flowability, mechanical strength and heat resistance.

REFERENCES:
patent: 2813849 (1957-11-01), Kern
patent: 4245072 (1981-01-01), Uraneck et al.
patent: 4370252 (1983-01-01), Uraneck et al.
patent: 4956433 (1990-09-01), Mezger
Otsu et al., "Role of Initiator-Transfer Agent-Terminator (Iniferter) in Radical Polymerizations: Polymer Design by Organic Disulfides as Iniferters", Makromol. Chem., Rapid Commun., vol. 3, 1982, pp. 127-132.
Otsu et al., "Living Radical Polymerizations in Homogeneous Solution by Using Organic Sulfides as Photoiniferters", Polymer Bulletin, vol. 7, 1982, pp. 45-50.

Affiliated with

Also associated with

Rating

Process for producing styrene based polymer and molded articles 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 producing styrene based polymer and molded articles , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing styrene based polymer and molded articles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1322149