Plastisol composition, gelled film and article
View Patent ↗A plastisol composition of the present invention comprises a polyalkylene glycol and/or a polyalkylene glycol derivative (X) and polymer particles (Y). This composition uses non-halogen based polymer particles with no halogen atoms, which do not emit materials such as hydrogen chloride gas or dioxin on incineration, and does not require a phthalic acid based plasticizer as a dispersion medium, and consequently provides an extremely large reduction in environmental impact. Furthermore, by using the plastisol composition, a gelled film having no bleed out of the dispersion medium, superior dispersion medium retention characteristics, workability, and processability is obtained. In addition, by using the plastisol composition of the present invention, a gelled film or an article with excellent mechanical characteristics are provided. The composition of the present invention is suitably used as materials such as wallpaper, floorings, vehicle undercoats, and vehicle body sealers.
1. A plastisol composition comprising a at least one compound (X), and polymer particles (Y),
wherein said at least one compound (X) is represented by a general formula (1) shown below:
(wherein, R 1 and R 2 each represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, R 3 represents a straight chain or branched alkylene group having 2 to 12 carbon atoms, and n which represents an integer within a range from 5 to 200), and
said polymer particles (Y) comprise, as components, (1) and (2), or (1) and (3), wherein (1) represents methyl methacrylate units, (2) represents methacrylate ester units (A1) which are esters of an alcohol having 2 to 8 carbon atoms and methacrylic acid, and/or acrylate ester units (A2) which are esters of an alcohol having 1 to 8 carbon atoms and acrylic acid, and (3) represents monomer units (B) which comprise at least one type of high polarity functional group selected from the group consisting of carboxyl groups, sulfonic acid groups, phosphoric acid groups, and epoxy groups.
2. A plastisol composition according to claim 1 , wherein said at least one compound (X) is at least one compound selected from the group consisting of polyethylene glycol, polypropylene glycol, and polybutylene glycol.
3. A plastisol composition according to claim 1 , wherein said polymer particles (Y) are particles with a core/shell structure or a gradient structure.
4. A plastisol composition according to claim 1 , wherein said polymer particles (Y) have primary particles with a volume average particle size for primary particles of 0.01 to 50.0 μm.
5. A plastisol composition according to claim 1 , wherein said polymer particles (Y) are powder formed by spray drying.
6. A plastisol composition according to claim 1 , wherein said at least one compound (X) is polyethylene glycol, and said polymer particles (Y) have a solubility parameter of 20.5 or less.
7. A plastisol composition according to claim 1 , wherein said at least one compound (X) is polypropylene glycol, and said polymer particles (Y) have a solubility parameter within a range from 19.8 to 20.5.
8. A plastisol composition according to claim 1 , wherein said at least one compound (X) is polybutylene glycol, and said polymer particles (Y) have a solubility parameter of 19.6 or more.
9. A plastisol composition according to claim 1 , wherein said at least one compound (X) contains a hydroxyl group, and said plastisol composition further comprises a compound (Z) having a functional group which reacts with said hydroxyl group.
10. A gelled film comprising a dispersion medium, in which an amount of bleed out of said dispersion medium is 1% or less of a total amount of the dispersion medium when a vinyl chloride film of dimensions 50×50×0.07 (mm) is placed on a surface of a gelled film of dimensions 50×50×2 (mm), and said gelled film is then retained for 24 hours at 80° C. with a pressure of 200 Pa applied from a side of said vinyl chloride film, which gelled film is a film produced by gelling a plastisol composition according to claim 1 .
11. A plastisol composition according to claim 1 , wherein said polymer particles (Y) comprise, as components, (1) and (2).
12. A plastisol composition according to claim 1 , wherein said polymer particles (Y) comprise, as components, (1) and (3).
13. A plastisol composition according to claim 1 , wherein said at least one compound (X), and polymer particles (Y), are present in a mass ratio of (X) to (Y) of 30/70 to 70/30.