Synthetic resin leather

Details Synthetic resin leather Synthetic resin leather

2002-04-08

2004-10-05

Jones, Deborah (Department: 1775)

Stock material or miscellaneous articles

Artificial leather

C428S480000, C428S423100, C428S518000, C428S522000, C428S523000, C428S141000, C428S142000, C428S147000, C428S151000, C428S156000, C428S161000, C442S059000, C442S304000, C442S288000, C442S293000, C442S290000, C442S396000, C442S398000, C442S399000

Reexamination Certificate

active

06800384

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a synthetic resin leather prepared by arranging a synthetic resin layer on the surface of a substrate such as knit or woven fabric or soft type foam sheet, especially relates to a synthetic resin leather having good touch.
2. Description of the Prior Art
As the synthetic resin leather which is used as a material for car interior, bags and pouches or surface material of furniture, a synthetic resin leather prepared by arranging a synthetic resin layer on the surface of a sheet type substrate such knit fabric, woven fabric, non-woven fabric or soft type foam sheet is used. And said synthetic resin leather is required not only to have pliability and intensity but also to have good touch.
In general, since the synthetic resin leather is easily charged with electricity and the surface of which is easily contaminated by the electrostatic charge, it is not sufficient at the view point of moisture absorbing ability and moisture diffusing ability in comparison with the natural leather. Further, the synthetic resin leather has a cool touch like plastics, therefore, the touch of it is inferior to that of the natural leather. Many trials to make the touch of the synthetic resin leather to be similar to that of natural leather were tried, up to the present. The trial to blend the granulated powder of natural leather in the synthetic resin layer of a synthetic resin leather for the purpose to obtain similar touch to the natural leather is also one of the trial. However, in the case of said method, the process to granulate the natural leather to the shape and size suitable to be blended in the synthetic resin layer is very expensive, and further the inconsistent quality of the natural leather, which is associated with natural leather, is a problem.
BRIEF SUMMARY OF THE INVENTION
The present invention is carried out by taking the above mentioned circumference into consideration, and the object of the present invention is to provide a synthetic leather which is good at moisture absorbing ability and moisture diffusing ability, and having an excellent touch similar to the natural leather.
The present invention is a synthetic resin leather comprising a substrate at least one surface of which is arranged with a synthetic resin layer, wherein said synthetic resin layer contains 1 to 70 weight parts of bridged polyalkylene oxide to 100 weight parts of synthetic resin. As the synthetic resin, it is desirable to use polyvinyl chloride resin, acrylic soft resin, mixed resin composed of 50-95 wt. % of thermoplastic polyurethane and 50-5 wt. % of acrylic soft resin, copolymer of polyester resin or polyolefin resin. A surface coating layer containing powder of natural organic substance can be arranged over the surface of synthetic resin layer of said synthetic resin leather. As the powder of natural organic substance, collagen can be desirably used. Further, on the surface of the synthetic resin leather, it is desirable to mark a pattern and to make the height of convex part of the pattern higher than 0.05 mm.
DETAILED DESCRIPTION OF THE INVENTION
As the substrate of the synthetic resin leather of the present invention, knit or woven fabrics or non-woven fabrics can be used, and a material which does not loose pliability of the synthetic resin layer and which provides a proper intensity and bulky feeling is desirably used. The starting materials of these knit or woven fabrics is polyamide fiber, polyester fiber, polyacrylic fiber, polypropylene fiber, cotton, rayon or mixed spun yarn of these fibers. As the knit fabrics, double knit fabric or grey sheeting can be mentioned, and as woven fabrics, plane woven cloth, figured woven cloth or satin fabric can be mentioned. And as a substrate, a soft type foam sheet can be used. The substantial example of said soft type foam sheet, polypropylene foam, electron beam bridged polypropylene foam, polyethylene foam, electron beam bridged polyethylene foam or polyurethane foam can be mentioned. And as the substrate, a laminate of woven fabric, knit fabric or non-woven fabric with soft type foam sheet can be also used. In this case, it is desirable to form a structure of “woven, knit or non-woven fabric/soft type foam sheet/synthetic resin sheet”.
As the substantial example of synthetic resin used in the present invention to form a synthetic resin layer, a pliable synthetic resin such as soft polyvinyl chloride, acrylic soft resin, mixed resin of thermoplastic polyurethane and acrylic soft resin, polyester copolymer or polyolefin resin can be mentioned.
Above mentioned soft polyvinyl chloride is prepared and softened by blending following plasticizer to polyvinyl chloride; namely, phthalic acid ester such as di2-ethylhexyl phthalate, isobutyl phthalate, diisodecyl phthalate, trimellitic acid ester such as 2-ethylhexyl trimellitate, epoxy plasticizer, such as epoxydated soybean oil, butyl epoxy stearate or phosphoric acid ester such as tricresyl phosphate.
Above mentioned acrylic soft resin is a resin which displays pliability like soft polyvinylchrloride at the room temperature. Said acrylic soft resin is desirable to be multi layered polymer, that is, more than two kinds of acrylic resin are forming core-shell type multi layered structure. These acrylic soft resin displays good pliability at the room temperature, has durability for bending and excellent weather resistance.
One example of acrylic soft resin is illustrated as follows. That is, acrylic soft resin of multi layered structure, comprising the combination of 10-90 weight parts of at least single layered polymer layer [A] whose Tg is lower than −20° C., prepared by polymerizing monomer mixture consisting of acrylic acid alkyl ester, polyfunctional bridgiable monomer and/or polyfunctional graft monomer, further adding methacrylic acid alkyl ester having alkyl group of carbon number 1 to 8 and/or copolymerable unsaturated monomer in case of necessity, and 90-10 weight parts of at least single layered polymer layer [B] whose Tg is from −20° C. to 50° C., prepared by polymerizing monomer mixture consisting of at least one kind of acrylic acid alkyl ester having alkyl group of carbon number 1 to 12, at least one kind of methacrylic acid alkyl ester having alkyl group of carbon number 1 to 8, further adding copolymerable unsaturated monomer in case of necessity, and the layer located at the outer most layer is polymer layer [B].
The other example of acrylic soft resin is illustrated as follows. Namely, the acrylic soft resin of multi layered structure comprising, 30-80 weight parts of rubber layer prepared by polymerizing acrylic acid alkyl ester having alkyl group of carbon number 1-8, polyfunctional monomer having at least two vinyl group or vinylidene group and monofunctional monomer having one copolymerable vinyl group in case of necessity and 20 to 70 weight parts of hard resin layer prepared by polymerizing methyl methacrylate, acrylic acid alkyl ester having alkyl group of carbon number 1-8 and/or monomer having copolymerable vinyl group or vinylidene group, and the layer located at the outer most layer is hard resin layer.
Further, the other example of acrylic soft resin is mentioned as follows. Namely, the acrylic soft resin of multi layered structure whose average particle size is from 0.01 &mgr;m to 3 &mgr;m comprising, (A) 5-30 weight parts of polymer layer locating at the inmost layer prepared by polymerizing monomer mixture consisting of methyl metacrylate, acrylic acid alkyl ester having alkyl group of carbon number 1-8; (B) 20-45 weight parts of polymer layer locating at the intermediate layer prepared by polymerizing monomer mixture consisting of acrylic acid alkyl ester having alkyl group of carbon number 1-8, polyfunctional grafting agent and methyl metacrylate and/or polyfunctional bridging agent; and (C) 50-75 weight parts of polymer layer locating at the outermost layer prepared by polymerizing monomer mixture consisting of methyl metacrylate and acrylic acid alkyl

Affiliated with

Also associated with

Rating

Synthetic resin leather does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Synthetic resin leather, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synthetic resin leather will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3277961