Patent EP0173789A2 successfully refreshed from Google Patents.
EP0173789A2
Expired / Lapsed
EP
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Process for producing emulsion of vinyl resin having microvoids therein, and process for its powderization
Assignee: DIC Corp
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Filing: 1985-02-06
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Granted: —
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Expires: 2005-02-06
Abstract
Abstract A process for producing an emulsion of a vinyl resin having microvoids therein, which comprises using as seed particles 0.1 to 90 parts by weight (as solids) of a polymer emulsion (C) obtained by emulsion polymerization of a polymerizable monovinyl monomer (A) and optionally, a polyfunctional crosslinkable monomer (B), adding to said seed particles a monomeric mixture which is composed of 99.9 to 10 parts by weight of a polymerizable monovinyl monomer (D) and 0 to 50 parts by weight of a polyfunctional crosslinkable monomer (E) and the solubility parameter of which differs from the solubility parameter of the polymer (C) by at least 0.1, and emulsion polymerizing the monomeric mixture. The resulting resin emulsion may be powderized by drying.
Inventors
- 👤 Kunihide Takarabe
- 👤 Fumio Yoshino
- 👤 Mitinobu Tabata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 10:43
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/16; C08F; C08F265/00; C08F265/04; C08F291/00; C08J2351/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
A process for producing an emulsion of a vinyl resin having microvoids therein, which comprises using as seed particles 0.1 to 90 parts by weight, as solids, of a polymer emulsion (C) obtained by emulsion polymerization of a polymerizable monovinyl monomer (A) and optionally, a polyfunctional crosslinkable monomer (B), adding to said seed particles a monomeric mixture which is composed of 99.9 to 10 parts by weight of a polymerizable monovinyl monomer (D) and 0 to 50 parts by weight of a polyfunctional crosslinkable monomer (E) and the solubility parameter of which differs from the solubility parameter of the polymer (C) by at least 0.1, and emulsion polymerizing the monomeric mixture.
Claim 2
Dependent Claim
111 words
A process for producing an emulsion of a vinyl resin having microvoids therein, which comprises using as seed particles 0.1 to 90 parts by weight, as solids, of a polymer emulsion (C) obtained by emulsion polymerization of a polymerizable monovinyl monomer (A) and optionally, a polyfunctional crosslinkable monomer (B), adding to said seed particles a monomeric mixture which is composed of 99.9 to 10 parts by weight of a polymerizable monovinyl monomer (D) and 0 to 50 parts by weight of a polyfunctional crosslinkable monomer (E) and the solubility parameter of which differs from the solubility parameter of the polymer (C) by at least 0.1, and emulsion polymerizing the monomeric mixture.
Claim 3
Dependent Claim
37 words
The process of claim 1 wherein each of the polymerizable monovinyl monomers (A) and (D) contains less than 5 % by weight, based on the total monomer amount, of an alpha,beta-ethylenically unsaturated carboxylic acid or its salt.
Claim 4
Dependent Claim
24 words
The process of claim 1 wherein the copolymer emulsion (C) is used in an amount of 0.5 to 70 parts by weight as solids.
Claim 5
Dependent Claim
33 words
The process of claim 1 wherein the difference of the solubility parameter of the copolymer (C) from that of the monomeric mixture composed of the monomers (D) and (E) is 0.1 to 10.
Claim 6
Dependent Claim
16 words
The process of claim 1 wherein the microvoids have a diameter of 0.1 to 1.0 micron.
Claim 7
Dependent Claim
116 words
A process for powderizing an emulsion of a vinyl resin having microvoids therein, which comprises using as seed particles 0.1 to 90 parts by weight, as solids, of a polymer emulsion (C) obtained by emulsion polymerization of a polymerizable monovinyl monomer (A) and optionally, a polyfunctional crosslinkable monomer (B), adding to said seed particles a monomeric mixture which is composed of 99.9 to 10 parts by weight of a polymerizable monovinyl monomer (D) and 0 to 50 parts by weight of a polyfunctional crosslinkable monomer (E) and the solubility parameter of which differs from the solubility parameter of the polymer (C) by at least 0.1, emulsion polymerizing the monomeric mixture, and powderizing the resulting polymer emulsion.
Claim 8
Dependent Claim
116 words
A process for powderizing an emulsion of a vinyl resin having microvoids therein, which comprises using as seed particles 0.1 to 90 parts by weight, as solids, of a polymer emulsion (C) obtained by emulsion polymerization of a polymerizable monovinyl monomer (A) and optionally, a polyfunctional crosslinkable monomer (B), adding to said seed particles a monomeric mixture which is composed of 99.9 to 10 parts by weight of a polymerizable monovinyl monomer (D) and 0 to 50 parts by weight of a polyfunctional crosslinkable monomer (E) and the solubility parameter of which differs from the solubility parameter of the polymer (C) by at least 0.1, emulsion polymerizing the monomeric mixture, and powderizing the resulting polymer emulsion.
Claim 9
Dependent Claim
37 words
The process of claim 6 wherein each of the polymerizable monovinyl monomers (A) and (D) contains less than 5 % by weight, based on the total monomer amount, of an alpha,beta-ethylenically unsaturated carboxylic acid or its salt.
Claim 10
Dependent Claim
24 words
The process of claim 6 wherein the copolymer emulsion (C) is used in an amount of 0.5 to 70 parts by weight as solids.
Claim 11
Dependent Claim
33 words
The process of claim 6 wherein the difference of the solubility parameter of the copolymer (C) from that of the monomeric mixture composed of the monomers (D) and (E) is 0.1 to 10.
Claim 12
Dependent Claim
16 words
The process of claim 6 wherein the microvoids have a diameter of 0.1 to 1.0 micron.
References Cited (Backward Citations)
No citation records indexed.
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