Crystalline 1-butene polymer composition
AssigneeShell Oil Company
InventorsMasaki Kohyama, Hiroyuki Hori
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Abstract
The composition of crystalline 1-butene polymer comprising (a) a crystalline 1-butene polymer containing a 1-butene component as a main component, and (b) a radical-treated crystalline olefinic polymer having (1) a boiling p-xylene-insoluble content of 30% by weight at most and (2) the relation satisfying the following expression Tc.sup.CL -Tc.sup.O .gtoreq.1 wherein Tc.sup.CL is the crystallization temperature (.degree.C.) of the radical-treated crystalline olefinic polymer, and Tc.sup.O is the crystallization temperature of the crystalline olefinic polymer before the radical treatment, and (c) the proportion of the radical-treated crystalline olefinic polymer (b) being 0.2 to 100 parts by weight per 100 parts by weight of the crystalline 1-butene polymer (a).
Claims13
A crystalline 1-butene polymer composition comprising
- (a) a crystalline 1-butene polymer containing a 1-butene component as a main component, and
- (b) a radical-treated crosslinked crystalline polymer having alpha olefin homopolymer or copolymer consisting of two or more alpha olefins which has (1) a boiling p-xylene-insoluble content of 30% by weight at most and (2) the relation satisfying the following expressions
- Tc.sup.CL .gtoreq.Tc.sup.0 .gtoreq.1
- wherein Tc.sup.CL is the crystallization temperature (.degree.C.) of the radical-treated crystalline olefinic polymer, and Tc.sup.0 is the crystallization temperature of the crystalline olefinic polymer before the radical treatment, and 0.01<(MFR.sup.CL)/(MFR.degree.)<100 wherein MFR.degree. (g/10 min) is the melt flow rate of the crystalline polymer before treatment and MFR.sup.CL (g/10 min) is the melt flow rate of the crystalline polymer after treatment, and (c) the proportion of the radical-treated crosslinked crystalline polymer (b) being 0.2 to 100 parts by weight per 100 parts by weight of the crystalline 1-butene polymer (a), said treatment being effected in the presence of a cross linking agent and a polymerization initiator, or by irradiating light onto the crystalline polymer in the presence of a photopolymerization initiator.
Dependencies are inferred from the claim text.