Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1983-06-21
1984-05-01
Nielsen, Earl A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
525 27, 525 39, 525 44, 525 48, 525166, 525168, 525171, C08L 6706
Patent
active
RE0315770
ABSTRACT:
Terminally unsaturated liquid epihalohydrin polymers are produced by polymerizing at least one epihalohydrin using acrylic acid or methacrylic acid as a modifier. The polymerization is conducted in the presence of a catalytic amount of a trialkyl oxonium salt of an HMF.sub.6 acid wherein M is an element selected from the group consisting of phosphorus, arsenic and antimony. The polymers are useful as tougheners for unsaturated polyester resin systems.
REFERENCES:
patent: 3431321 (1969-03-01), De Lapp et al.
patent: 3951888 (1976-04-01), Isayama et al.
patent: 3983184 (1976-09-01), Kikuzawa
patent: 4101604 (1978-07-01), Rowe
Csontos Alan A.
Lobo Alfred D.
Nielsen Earl A.
Shust Nestor W.
The B. F. Goodrich Company
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