Modified copolymers of ethylene-alpha olefin carboxylic acids

Details Modified copolymers of ethylene-alpha olefin carboxylic acids Modified copolymers of ethylene-alpha olefin carboxylic acids

1994-05-18

1995-01-24

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 89, 526194, 526204, 526208, 526209, 526213, 526217, 526220, 526222, 5263186, C08F22006, C08F 238

Patent

active

053843738

ABSTRACT:
A homogeneous, random interpolymer of ethylene and an alpha-olefinically unsaturated carboxylic acid or ester having a melt flow rate in the range of about 0.1 to about 300 g/10 minutes, as determined by ASTM D-1238 (190.degree. C./2160 g), is improved during its manufacture when made in a substantially constant environment in a stirred autoclave under substantially steady-state conditions of temperature, pressure, and flow rates, said temperature and pressure being sufficient to produce a single phase reaction, using a free-radical initiator, said improvement being obtained by the use of a minor amount of a telogenic modifier in the reaction mixture, the process being further characterized by the use of either, or both, of (a) a temperature which is lower than that which would be required without the presence of the telogen, or (b) a pressure which is higher than that which would be required without the presence of the modifier.

REFERENCES:
patent: 3029230 (1962-04-01), Strauss
patent: 3117110 (1964-01-01), Madge et al.
patent: 3520861 (1970-07-01), Thomson et al.
patent: 3658741 (1972-04-01), Knutson et al.
patent: 3736305 (1973-05-01), Kinkel et al.
patent: 4351931 (1982-09-01), Armitage
patent: 4599392 (1986-07-01), McKinney et al.

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