Process for producing hydrophilic polymers

Details Process for producing hydrophilic polymers Process for producing hydrophilic polymers

1984-08-29

1985-07-09

Lipman, Bernard

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

Synthetic resins

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

525381, 525382, 525386, 525387, 5253293, 5253317, 5253328, 5253329, 5253331, 5253332, C08F 832

Patent

active

045283400

ABSTRACT:
A hydrophilic modified diene polymer material is produced by the steps of epoxidizing a diene polymer material consisting of at least one member selected from rubber polymers which have a molecular weight of 10,000 or more and contain an 85 molar % of more 1,4-addition structure based on the entire molar amount of double bonds contained therein, and crystalline 1,2-polybutadiene polymers which have a melting point of from 60.degree. C. to 170.degree. C., and a reduced viscosity (nsp/c) of 0.2 or more determined in a tetrahydronaphthalene solution in a concentration of 200 mg/100 ml at a temperature of 100.degree. C., and contain a 75 molar % or more 1,2-addition structure based on the entire molar amount of double bonds contained therein, for example, with a combination of a carboxylic acid and a peroxide compound, or a carboxylic peracid, to an extent such that the degree of epoxidization of the rubber polymers is in the range of from 5% to 60% and the degree of epoxidization of the crystalline 1,2-polybutadiene is in the range of from 5% to 45%; and ring-opening at least a portion of the epoxy rings in the resultant epoxidized polymeric material by heating it in the presence of a tertiary amine and a carboxylic acid.

REFERENCES:
patent: 3970608 (1976-07-01), Furukawa et al.
patent: 4173593 (1979-11-01), Smith et al.
patent: 4282207 (1981-08-01), Young et al.
patent: 4309516 (1982-01-01), Schultz et al.
patent: 4356278 (1982-10-01), Daimer et al.

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