Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-09-16
1994-09-20
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
5253294, 5253299, 5253303, 525374, 525383, 525404, C08F23610
Patent
active
053490274
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a modified poiyolefin resin composition which does not give out a bad smell during modification and which has excellent adhesion to fillers, metals and polymeric resin substrates as well as a thermoplastic resin composition comprising the modified polyolefin resin and a thermoplastic resin and having good mechanical properties.
BACKGROUND OF PRIOR ART
In general, polyolefin resins have excellent physical and chemical properties and have widely been used as materials for molding into, for instance, fibers and films. Moreover, they are reinforced with fillers such as glass fibers for making the best use of these characteristics. However, polyolefins have low adhesion to glass fibers and thus it is not possible to sufficiently enjoy reinforcing effects of fillers, because they are free of reactive functional groups. To eliminate these disadvantage, there have been proposed the use of so-called modified polyolefin resins such as those obtained through copolymerization of olefins with modifying agents, for instance, unsaturated carboxylic acids or epoxy group-containing vinyl monomers such as giycidyl methacrylate (hereinafter referred to as "GMA") or allyl glycidyl ether, or grafting polyolefin resin with the modifying agents (see, for instance, Japanese Unexamined Patent Publication (hereinafter referred to as "J. P. KOKAI") No. Sho 59-62613).
According to these methods, strong chemical bonds are formed between carboxyl groups or epoxy groups and glass fibers and thus the glass fibers are firmly adhered to the modified polyolefin resin. More specifically, the reinforcing effect by glass fibers is improved in systems which these modified polyolefin resins are used. However, the modification with unsaturated carboxylic acids possibly becomes a cause of corrosion of metallic parts such as screws of an extruder during the preparation of fiber-reinforced resins. In addition, the epoxy group-containing vinyl monomers, in general, have a low boiling points often give out a bad smell during extrusion at a high temperature and thus have bad workability.
Moreover, it has been investigated to blend polyolefin resins with other resins such as polyester resins, polyphenylene sulfide resins, polycarbonate resins and polyamide resins since they are excellent in impact resistance and resisance to chemicals and are not expensive. However, the polyolefin resin in itself has low compatibility with the foregoing resins. Accordingly, the resulting blend shows substantial reduction of such properties as Izod impact strength, tensile strength and elongation and is not impracticable.
DISCLOSURE OF THE INVENTION
An object of the present invention is to provide a modified polyolefin resin composition which does not give out a bad smell during modification and which has excellent adhesion to fillers, metals and substrates of synthetic resins.
Another object of the present invention is to provide a thermoplastic resin composition comprising a modified polyolefin resin and other thermoplastic resins and having good mechanical properties such as Izod impact strength, tensile strength and elongation.
A still another object of the present invention is to provide a modified polyolefin resin composition which is reinforced with fillers.
According to the present invention, there is provided a modified polyolefin resin obtained by reacting a polyolefin resin with an epoxy group-containing acrylamide monomer represented by the following general formula I: atoms which is substituted with at least one glycidyloxy group and R represents a hydrogen atom or a methyl group.
The foregoing polyolefin resin is obtained by a method which comprises reacting the epoxy group-containing acrylamide monomer represented by the above general formula I with a polyolefin resin in the presence of a free-radical initiator.
According to another aspect of the present invention, there is provided a thermoplastic resin composition which comprises 5 to 95% by weight of the foregoing modified polyolefin resin and 95 t
REFERENCES:
Patent Abstracts of Japan, vol. 13, No. 21 (C-560)(3369), Jan. 18, 1989.
Patent Abstracts of Japan, vol. 12, No. 248 (C-511, (3095), Jul. 13, 1988.
Kanezaki Kazuharu
Kishi Susumu
Satoh Takashi
Takiguchi Minoru
Ueki Toru
Bleutge John C.
Gulakowski Randy
Mitsui Toatsu Chemicals Inc.
LandOfFree
Modified polyolefin resin compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modified polyolefin resin compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modified polyolefin resin compositions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2429956