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US 2023/0235202 A1Published application
Plasticizer for resins
AssigneeIdemitsu Kosan Co., Ltd.
InventorsKiyokazu KATAYAMA, Hideaki NODA, Michika TOKUNAGA, Shuhei ARITA, Nozomu FUJII
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Abstract
A plasticizer may be suitable for resins and contain an amorphous propylenic polymer having a weight-average molecular weight (Mw), measured according to a GPC method, in a range of from 5,000 to 30,000 and having a molecular weight distribution (Mw/Mn) of 3.0 or less. The amorphous propylenic polymer may be a propylene homopolymer
Claims18
A plasticizer suitable for one or more resins, comprising:
- an amorphous propylenic polymer having a weight-average molecular weight (Mw), measured by GPC, in a range of from 5,000 to 30,000 and having a molecular weight distribution (Mw/Mn) of 3.0 or less.
An amorphous propylenic polymer satisfying (1) to (9):
- (1) a weight-average molecular weight (Mw) in a range of from 5,000 to 30,000;
- (2) a molecular weight distribution (Mw/Mn) of 3.0 or less;
- (3) a meso pentad fraction [mmmm] less than 20 mol %;
- (4) a racemic pentad fraction [rrrr] less than 25 mol %;
- (5) a 1,3-bond fraction less than 0.3 mol. %;
- (6) a 2,1-bond fraction less than 0.3 mol. %;
- (7) glass transition temperature of −15° C. or higher;
- (8) a melt viscosity at 190° C. of 1,000 mPa·s or less;
- (9) a number of the terminal unsaturated groups per one molecule is less than 0.5.
6 more elements
Dependencies are inferred from the claim text.