Process for the manufacture of crystalline, crosslinked, elastom

Details Process for the manufacture of crystalline, crosslinked, elastom Process for the manufacture of crystalline, crosslinked, elastom

1977-08-29

1979-12-25

Lieberman, Paul

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

136 89P, 260 37EP, 260 40R, 525119, C08L 6300

Patent

active

041805275

ABSTRACT:
The invention relates to the manufacture of crystalline epoxide resins which exhibit a marked crystallite melt temperature. The formation of the crystallites is caused by molecule blocks which are derived from aliphatic polyester-polycarboxylic acids. According to the invention, two aliphatic polyester-polycarboxylic acids (A and B) are reacted under very specific quantitative conditions with epoxide compounds which contain at least 2 epoxide groups and optionally with curing agents. The polyester-polycarboxylic acids A are purely n-aliphatic in character, whereas the polyester-polycarboxylic acids B are not. They contain, for example, neopentyl radicals which are derived from neopentyl alcohol during the ester formation. These crystalline synthetic resins are particularly suitable for use as material for absorbing solar energy in solar energy collectors.

REFERENCES:
patent: 3641194 (1972-02-01), Schmid
patent: 3739041 (1973-06-01), Schmid
patent: 3937751 (1976-02-01), Schmid
patent: 3979477 (1976-09-01), Schmid
patent: 4101476 (1978-07-01), Schmid

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