Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1984-08-06
1985-06-04
Seccuro, Carman J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525267, 525273, 525304, 525305, 525308, 525309, 525902, C08L 5100, C08F26504, C08F26506
Patent
active
045215677
ABSTRACT:
A method for making impact resistant molding compositions wherein a hard phase having a glass transition temperature above 25.degree. C. and consisting principally of methyl methacrylate is polymerized at least partially in a first stage, following which the monomers of a rubbery phase whose polymers have a glass transition temperature below 25.degree. C. are added in a second stage and the polymerization is carried to completion, polymerization of the hard phase in the first stage being performed in a presence of an oil soluble free radical initiator and of an organosulfur chain transfer agent having at least two thiol groups in the molecule, and polymerization of the monomers of the rubbery phase in the second stage being carried out with graft crosslinkers in the presence of the previously formed hard phase.
REFERENCES:
patent: 3458603 (1969-07-01), Griffin
patent: 3711576 (1973-01-01), Hwa
patent: 3943190 (1976-03-01), Abe et al.
Abstract-Japanese Pat. Nos. 53138-496, 53036-589, Kuraray.
Arndt Peter J.
Ludwig Walter
Munzer Manfred
Siol Werner
Wenzel Franz
Rohm GmbH
Seccuro Carman J.
LandOfFree
Method for making impact resistant molding compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making impact resistant molding compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making impact resistant molding compositions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-829513