Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1978-01-13
1980-02-12
Nielsen, Earl A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528141, 528143, 528265, 528373, C08G 6500
Patent
active
041884736
ABSTRACT:
Polymeric materials and their thermoset, resinous products prepared by the polymerization of a mixture containing at least two different monomeric structures selected from the group having the general formula ##STR1## wherein each A represents a chalcogen independently selected from the group oxygen and sulfur; R.sub.1 represents a member selected from the group hydrogen, --CH.sub.2 (OCH.sub.2).sub.y OCH.sub.2 --R.sub.3 ; each R.sub.2 represents a member independently selected from the group consisting of R.sub.1, halogen and an alkyl group of 1 to 10 carbon atoms; R.sub.3 represents a member selected from the group consisting of H, methyl, ethyl and propyl; each m represents an independently selected integer from 1 to 2; n represents an integer from 0 to 60 and y represents an integer from 0 to 3 in the presence of an acid catalyst at a temperature of from between about 140.degree. and about 165.degree. C. for from several minutes to several hours. The thermoset resinous products are obtained by further heating the aforedescribed polymeric materials at a temperature of from about 170.degree. C. to about 260.degree. C. for from several minutes to several hours.
The polymeric materials are low melting solids which are useful as laminating, molding, film-forming materials which can be cured or thermoset by heat.
REFERENCES:
patent: 3274157 (1966-09-01), Doedens
patent: 3323962 (1967-06-01), Sprengling et al.
patent: 3405091 (1968-10-01), Sprengling et al.
Nishizaki et al., "Thermosetting Resin Compositions," Chemical Abstracts 74, 13748c (1971).
Aulova et al., "Thermosetting Polymers," Chemical Abstracts 79, 54430q (1973).
Khadzhistoyanova et al., "Oligomeric Products from Diphenyl Ether," Chemical Abstracts 81, 136824b (1974).
Baker G. R.
Nielsen Earl A.
The Dow Chemical Company
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