Process for cationic polymerization

Details Process for cationic polymerization Process for cationic polymerization

1996-09-26

1998-12-29

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526135, 526194, 526216, 526221, 526237, 526238, 526280, 526281, 526283, 526346, 526347, 525 98, 528392, C08F 1208, C08F 414

Patent

active

058543678

ABSTRACT:
The specification discloses a process for cationic polymerization of vinyl aromatic monomers, adhesive compositions containing polymers made by the process and use of the polymers as processing aids for thermoplastic polymers. In the process, a vinyl aromatic monomer is dissolved in an organic solvent containing a complex comprising an in situ formed ester of an unsaturated carboxylic acid and a Lewis acid to provide a polymer having a softening point above about 125.degree. C. and a polydispersity index above about 2.0. Surprisingly, the Lewis acid/acrylate complex causes the reaction to proceed with reduced exothermicity and enables an increase in the softening point and yield as compared with a polymer made without the complex or using other complexes.

REFERENCES:
patent: 3932332 (1976-01-01), Douglas et al.
patent: 3959238 (1976-05-01), Hokama et al.
patent: 4306049 (1981-12-01), Prapas
patent: 4360628 (1982-11-01), Runavot et al.
patent: 4389334 (1983-06-01), Weinert, Jr. et al.
patent: 4533700 (1985-08-01), Mizui et al.
patent: 4657706 (1987-04-01), Durkee
patent: 4732936 (1988-03-01), Holohan, Jr.
patent: 4910321 (1990-03-01), Kennedy et al.
patent: 5051485 (1991-09-01), Schmid et al.
patent: 5140080 (1992-08-01), Chang
patent: 5177163 (1993-01-01), Chu et al.
Hackh's Chemical Dictionary (4th ed.) McGraw-Hill, N.Y., p. 509 (1969).

Affiliated with

Also associated with

Rating

Process for cationic polymerization 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 cationic polymerization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for cationic polymerization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1425751