Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1980-10-23
1981-12-29
Hamrock, William F.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525284, 525314, 525386, 526181, C08F 816
Patent
active
043083641
ABSTRACT:
Lactones derived from gamma-hydroxy acids are employed as coupling agents for polymers derived from alkali metal-initiated polymerizations. These coupling agents provide effective coupling without formation of undesirable by-products.
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patent: 3654212 (1972-04-01), Wright
patent: 3764639 (1973-10-01), Hsieh et al.
patent: 3773732 (1973-11-01), Dillenschneider
patent: 3880955 (1975-04-01), Hsieh et al.
patent: 4174360 (1979-11-01), Moczygemba
Polymerization of Cyclic Esters; Hall et al., Journ. Am. Chem. Soc., vol.. 80, Dec. 17, 1958, pp. 6409-6412.
Hamrock William F.
Phillips Petroleum Company
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