【発明の名称】表面下供給を用いたビニルラクタムと重合性カルボン酸との共重合体の沈澱重合

Title:

【発明の名称】表面下供給を用いたビニルラクタムと重合性カルボン酸との共重合体の沈澱重合

Document Type and Number:

Japanese Patent JPH05506469

Kind Code:

A

Abstract:

What is described herein is an improved precipitation polymerization process and copolymer products produced thereby. The process herein is carried out by charging a reactor with a solvent in which the copolymer product is substantially insoluble over the entire compositional range of the copolymer, preferably heptane or cyclohexane, and a polymerization initiator, heating to 50 DEG to 150 DEG C., agitating, and then simultaneously feeding selected amounts of a vinyl lactam and a polymerizable carboxylic acid into said reactor below the surface of the solvent while continuing to agitate the mixture to precipitate the copolymer from solution as a fine, white powder, and recovering the copolymer of defined composition.

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Inventors:

Syngentes
Smith Terry E
Zamora John
Economidis Minus

Application Number:

JP50914291A

Publication Date:

September 22, 1993

Filing Date:

April 24, 1991

Export Citation:

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Assignee:

ISP INVESTMENTS INC.

International Classes:

C08F2/00; C08F2/04; C08F2/06; C08F2/14; C08F26/10; C08F220/04; C08F226/10; (IPC1-7): C08F220/04; C08F2/00; C08F2/06; C08F226/10

Attorney, Agent or Firm:

Akihide Sugimura (1 outside)

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