Polymer emulsions with bimodal molecular-weight distribution

Details Polymer emulsions with bimodal molecular-weight distribution Polymer emulsions with bimodal molecular-weight distribution

1996-11-12

1998-06-30

Warzel, Mark L

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525 71, 525302, 525309, C08L 5300

Patent

active

057735050

ABSTRACT:
The invention relates to polymer emulsions of poly(meth)acrylic acid esters and olefin copolymers suitable for improvement of the viscosity index, for use as oil additives.
The polymer emulsion is formed of a continuous phase of poly(meth)acrylic acid esters and d-oligomers where the esters and oligomers have a bimodal molecular-weight distribution, a stabilizing agent (a graft or block polymerizate of an olefin copolymerizate and methacrylic acid esters), and a disperse phase of olefin copolymerizates distributed in the continuous phase.

REFERENCES:
patent: 4663642 (1987-05-01), Kameda et al.
patent: 5597871 (1997-01-01), Auschra et al.

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