Patent EP0052331A1 successfully refreshed from Google Patents.
EP0052331A1
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Halogen containing polyolefin composition, and method for inactivating halogens therein
Assignee: Kyowa Chemical Industry Co Ltd
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Filing: 1981-11-10
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Granted: —
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Expires: 2001-11-10
Abstract
Abstract A poiyolefin composition consisting essentially of (a) 100 parts by weight of a polyolefin containing halogens derived from a polymerization catalyst and/or attributed to the after-halogenation of the polymer, and (b) about 0.001 to about 10 parts by weight of an aluminum-magnesium hydroxide represented by the following formula wherein x is a positive number represented by 0<x<0.5 and m is a positive number represented by 0≤m<2, and having a BET specific surface area of no more than about 40 m 2 /g; and a method for inactivating the halogen in a halogen-containing polyolefin.
Inventors
- 👤 Shigeo Miyata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 16:58
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
84 words
A polyolefin composition consisting essentially of (a) 100 parts by weight of a polyolefin containing halogens derived from a polymerization catalyst and/or attributed to the after-halogenation of the polymer, and (b) about 0.001 to about 10 parts by weight of an aluminum-magnesium hydroxide represented by the following formula wherein x is a positive number represented by 0<x<0.5 and m is a positive number represented by 0≦m<2, and having a BET specific surface area of no more than about 4 0 m 2 / g.
Claim 2
Dependent Claim
84 words
A polyolefin composition consisting essentially of (a) 100 parts by weight of a polyolefin containing halogens derived from a polymerization catalyst and/or attributed to the after-halogenation of the polymer, and (b) about 0.001 to about 10 parts by weight of an aluminum-magnesium hydroxide represented by the following formula wherein x is a positive number represented by 0<x<0.5 and m is a positive number represented by 0≦m<2, and having a BET specific surface area of no more than about 4 0 m 2 / g.
Claim 3
Dependent Claim
37 words
The composition of claim 1 wherein the aluminum-magnesium hydroxide is surface-treated with about 1 to about 10 parts by weight, per part by weight of the hydroxide, of an alkali metal salt of a higher fatty acid.
Claim 4
Dependent Claim
22 words
The composition of claim 1 wherein the aluminum-magnesium hydroxide has an average second-order particle diameter of not more than about 5 microns.
Claim 5
Dependent Claim
26 words
The composition of claim 3 wherein the alkali metal salt of a higher fatty acid is an alkali metal salt of stearic acid or oleic acid.
Claim 6
Dependent Claim
59 words
The composition of claim 1 wherein said polyolefin is a member selected from the group consisting of polymers or copolymers of C 2 - C 8 olefins, copolymers of at least one C 2 - C 8 olefin with a diene, polymers or copolymers of C, - C 8 dienes, and the after-halogenated products of said polymers or copolymers.
Claim 7
Independent Claim
88 words
A method for inactivating the halogen in a halogen-containing polyolefin, which comprises mixing 100 parts by weight of a polyolefin coating halogens derived from a polymerization catalyst and/or attributed to after-halogenation of the polymer with about 0.001 to about 10 parts by weight of an aluminum-magnesium hydroxide of the following formula wherein x is a positive number represented by 0<x<0.5 and m is a positive number represented by 0≦m<2, said aluminum magnesium hydroxide having a BET specific surface area of not more than about 40 m 2 /g.
Claim 8
Independent Claim
88 words
A method for inactivating the halogen in a halogen-containing polyolefin, which comprises mixing 100 parts by weight of a polyolefin coating halogens derived from a polymerization catalyst and/or attributed to after-halogenation of the polymer with about 0.001 to about 10 parts by weight of an aluminum-magnesium hydroxide of the following formula wherein x is a positive number represented by 0<x<0.5 and m is a positive number represented by 0≦m<2, said aluminum magnesium hydroxide having a BET specific surface area of not more than about 40 m 2 /g.
References Cited (Backward Citations)
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