Compositions and articles containing styrene polymers and copolymers and blends thereof
AssigneeGeneral Electric Company
InventorsJean-Marie Dumont, Terence J. Lillie
Life of this patent
Estimating the term…
Abstract
Compositions and application to moulding of consumer goods, which contain styrene polymers, styrene copolymers, or their blends and articles moulded from these compositions having an intense, bright color and resistance to surface marking. The compositions containing styrene polymers and/or copolymers according to the invention comprise, in relation to the total weight of the polymers and/or copolymers in the composition: (a) less than 4% of internal lubricant; and (b) 2 to 10% of vaseline oil.
Claims15
A composition containing styrene polymers, styrene copolymers, or their blends, characterized in that it comprises, in relation to the total weight of the polymers and/or copolymers in the composition:
- (a) optionally, less than 2% of internal lubricant;
- and
- (b) about 2 to 10% by weight of at least a transparent external lubricant selected from the group consisting of:
- i) oily solvents of mineral or vegetable oil;
- ii) liquid silicones;
- iii) a glycol polymer;
- and d) a glycol.
Use to improve the intensity of the colors, the gloss, and the resistance to surface marking of articles manufactured from a composition containing styrene polymers, styrene copolymers, or their blends comprising, in relation to the total weight of the polymers and/or copolymers present in the composition, about 2 to 10% by weight of at least an transparent external lubricant selected from the group consisting of:
- i) oily solvents of mineral or vegetable oil;
- ii) liquid silicones;
- iii) a glycol polymer;
- and d) a glycol, and optionally about less than 2% by weight of an internal lubricant.
A process for producing a novel thermoplastic composition, comprising the steps of:
- (a) preparing a styrenic polymer component comprising styrene polymers, styrene copolymers, or their blends;
- (c) blending a mixture comprising said styrenic polymer component with about 2 to 10% by weight in relation to the total weight of the styrenc polymer component of at least a transparent external lubricant selected from the group consisting of:
- i) oily solvents of mineral or vegetable oil;
- ii) liquid silicones;
- iii) a glycol polymer;
- and d) a glycol, and optionally, less than 2% of internal lubricant.
Dependencies are inferred from the claim text.