Container made of synthetic resin and method for manufacture thereof
AssigneeTerumo Kabushiki Kaisha
InventorsToshiji Ichikawa, Yoshimitsu Asada, Ken Tatebe, Tooru Takahashi, Juuro Aoyagi, Takeshi Shimomura
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Abstract
A container made of synthetic resin and provided at one portion thereof with at least one tightly closable opening, which container has on a surface thereof a continuous coating having a gas barrier characteristic comprising low permeability to oxygen and carbon dioxide by the plasma treatment reaction of a mixture of a silicon compound having the general formula I with a silicon compound having the general formula II: ##STR1## wherein m=1-5, n=1-5, R.sup.1 and R.sup.2 are C.sub.1 -C.sub.5 alkyl, C.sub.1 -C.sub.5 alkoxy or phenyl or OH.
Claims39
A container made of synthetic resin and provided at one portion thereof with at least one tightly closable opening, which container has on at least either of the inner and outer surfaces thereof a continuous coating having a gas barrier characteristics comprising low permeability to oxygen and carbon dioxide by the plasma treatment reaction of a mixture of a silicon compound having the general formula I:
- ##STR10## wherein m denotes an integer of the value of 1 to 5, with a silicon compound having the general formula II:
- ##STR11## wherein n denotes an integer of the value of 1 to 5 and R.sup.1 and R.sup.2 independently denote an alkyl or alkoxy group having 1 to 4 carbon atoms, a phenyl group, or hydroxyl group, providing that both R.sup.1 and R.sup.2 are not both hydroxyl groups.
A method for the manufacture of a container made of synthetic resin and provided at one portion thereof with at least one tightly closable opening, which method comprises applying upon at least either of the inner and outer surfaces of the container body a mixed solution consisting of a silicon compound having general formula I:
- ##STR12## wherein m denotes an integer of the value of 1 to 5, and a silicon compound having the general formula II:
- ##STR13## wherein n denotes an integer of the value of 1 to 5 and R.sup.1 and R.sup.2 independently denote an alkyl or alkoxy group having 1 to 4 carbon atoms, a phenyl group, or hydroxyl group, providing that both R.sup.1 and R.sup.2 are not both hydroxyl groups, drying the applied layer of said mixed solution, and subsequently subjecting the dried layer to a plasma treatment in the absence of a catalyst and in the presence of the gas of an oxygen atom-containing molecule thereby covering said surface of the container body with a continuous coating having gas barrier characteristics comprising low permeability to oxygen and carbon dioxide.
Dependencies are inferred from the claim text.