Method of producing a resin for producing heat stable products,

Details Method of producing a resin for producing heat stable products, Method of producing a resin for producing heat stable products,

1980-02-11

1981-06-30

Phynes, Lucille M.

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

Synthetic resins

From aldehyde or derivative thereof as reactant

525398, 528129, C08G 1002, C08G 1602

Patent

active

042764084

ABSTRACT:
This invention relates to a method of producing a phenolated resin which can be used to form heat stable (up to 250.degree.) products.
Previously used resins are either very expensive or do not provide the requisite high temperature properties. An aim of the invention is to provide a cheap equivalent to commercially available high temperature resins.
An aromatic hydrocarbon (e.g. toluene) formaldehyde condensation resin is prepared. The low molecular weight contaminants are removed by a distillation process. The residue contains less than 1% low molecular weight material, and is phenolated to give the final resin. The resin may be cured to give a heat stable product.
The phenolated resin may be used to form glasscloth and asbestos laminates or as a lamp capping cement.

REFERENCES:
patent: 2954360 (1960-09-01), Krzikalla et al.
patent: 3303167 (1967-02-01), Kakiuchi et al.
patent: 3394203 (1968-07-01), Winegartner et al.
patent: 3535185 (1970-10-01), Tveter et al.
patent: 3993851 (1976-11-01), Robinson et al.
patent: 4038236 (1977-07-01), Robinson et al.

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