Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1980-01-31
1982-11-09
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...
525293, 525296, C08F 818
Patent
active
043585671
ABSTRACT:
A resin for hairdressing is obtained by: copolymerizing in a hydrophilic solvent a monomer (1), which is specific derivative of acrylic or methacrylic acid, and a monomer (3), which is a specific (meth)acrylic acid ester, and, optionally in addition, any of a monomer (2), which is another specific (meth)acrylic acid ester, and monomer (4), which is a hydrophilic ethylenically unsaturated monomer, and a monomer (5), which is an ethylenically unsaturated monomer other than the monomers (1) through (4); causing the copolymer thus formed to react in the state of a solution in a hydrophilic solvent with sodium or potassium haloacetate; removing any precipitate formed as by-product; and, if necessary, subjecting the copolymer solution thus obtained to an ion-exchange resin treatment thereby to remove ionic impurities.
REFERENCES:
patent: 3934595 (1976-01-01), Madrange et al.
IARC Monographs, vol. 20, International Agency for Research on Cancer, World Health Organization, "IARC Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans".
Shell International Research Maatschappij B.V. 1980, "Principles for the Safe Handling of Mutagens, Carcinogens and Teratogens".
Kirk Othmer, Encyclopedia of Chemical Tech., vol. 8, pp. 415-416.
Hayama Kazuhide
Narazaki Kanji
Adams Bruce L.
Burns Robert E.
Hamrock William F.
Lobato Emmanuel J.
Mitsubishi Petrochemical Company Limited
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