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US4886705A
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Polyphenylene sulfide film
Assignee: Mitsubishi Chemical Corp
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Filing: 1988-06-21
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Granted: 1989-12-12
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Expires: 2008-06-21
Abstract
Abstract Disclosed herein is a uniaxially or biaxially oriented polyphenylene sulfide film wherein the number of n-order of interference fringes Hn (per mm 2 ) as measured by a multiple interference method satisfies the following relations (1) and (2) at the same time: 30≦H.sub.1 ≦300 (1) 10≦H.sub.3 ≦300 (2)
Inventors
- 👤 Seiji Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:45
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; C08J2381/00; C08J2381/02; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0333; H05K1/0353; H05K1/0373; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/259; Y10T428/31; Y10T428/31504; Y10T428/31533
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
95 words
A uniaxially or biaxially oriented polyphenylene sulfide film selected from the group consisting of polyphenylene sulfide homopolymers, polyphenylene sulfide copolymers, blends of polyphenylene sulfide homopolymers and polyphenylene sulfide copolymers, blends of polymers having m-phenylene sulfide main repeating units and polyphenylene sulfide homopolymers or polyphenylene sulfide copolymers, said film containing two groups of particles, and said film having the number of n-order of interference fringes H n (per mm 2 ) as measured by a multiple interference method which satisfies the following relations (1) and (2) at the same time: 30≦H.sub.1 ≦300 (1) 10≦H.sub.3 ≦300 (2).
Claim 2
Dependent Claim
95 words
A uniaxially or biaxially oriented polyphenylene sulfide film selected from the group consisting of polyphenylene sulfide homopolymers, polyphenylene sulfide copolymers, blends of polyphenylene sulfide homopolymers and polyphenylene sulfide copolymers, blends of polymers having m-phenylene sulfide main repeating units and polyphenylene sulfide homopolymers or polyphenylene sulfide copolymers, said film containing two groups of particles, and said film having the number of n-order of interference fringes H n (per mm 2 ) as measured by a multiple interference method which satisfies the following relations (1) and (2) at the same time: 30≦H.sub.1 ≦300 (1) 10≦H.sub.3 ≦300 (2).
Claim 3
Dependent Claim
24 words
A film according to claim 1, which contains two groups of particles having an average diameter in the range of 0.1 to 5 μm.
Claim 4
Dependent Claim
30 words
A film according to claim 2, wherein at least one of said two groups of particles comprises the particles having a Mohs' hardness in the range of 1 to 6.
Claim 5
Dependent Claim
29 words
A film according to claim 1, wherein the content of each of said two groups of particles is 0.01 to 0.5% by weight based on the poly-p-phenylene sulfide composition.
Claim 6
Dependent Claim
14 words
A film according to claim 1, having a thickness of 1 to 1,000 μm.
Claim 7
Dependent Claim
24 words
A film according to claim 1, which has a modulus of elasticity of not lower than 300 kg/mm 2 in at least one direction.
Claim 8
Dependent Claim
17 words
A film according to claim 1, which has a coefficient of friction of not lower than 0.30.
Claim 9
Dependent Claim
17 words
A film according to claim 1, wherein the ratio of H 3 to H 1 is 0.2-5.
Claim 10
Dependent Claim
55 words
A film according to claim 1, which is obtained from a process comprising melting and extruding a poly-p-phenylene sulfide composition containing two groups of particles having an average particle size of 0.01 to 5 μm, quickly cooling and solidifying the extruded material to obtain an amorphous non-oriented sheet, and stretching said sheet uniaxially or biaxially.
Claim 11
Dependent Claim
29 words
A film according to claim 9, wherein the content of each of said two groups of particles is 0.01 to 0.5% by weight based on the poly-p-phenylene sulfide composition.
Claim 12
Dependent Claim
26 words
A film according to claim 9, wherein at least one of said two groups of particles comprises particles having a Mohs' hardness of 1 to 6.
Claim 13
Dependent Claim
24 words
A film according to claim 9, wherein the cooling treatment is conducted by an electrostatic cooling method for quick-cooling and solidifying the extruded material.
Claim 14
Dependent Claim
25 words
A film according to claim 9, wherein the uniaxially or biaxially stretched film is heat-treated at 170° to 260° C. for 1 to 10 seconds.
Claim 15
Dependent Claim
32 words
A film according to claim 9, wherein the uniaxially or biaxially stretched film is further stretched at least one direction and heat-treated at 170° to 260° C. for 1 to 10 seconds.
Claim 16
Dependent Claim
61 words
A film according to claim 1, wherein said particles are selected from the group consisting of talc, kaolin, calcium carbonate, lithium fluoride, mordenite, calcium fluoride, zinc oxide, calcium silicate, zeolite, calcium phosphate, amorphous silica, magnesium oxide, anatase titanium dioxide, particles composed of heat-resistant organic crosslinked polymers, tin oxide, rutile titanium oxide, crystalline silica, titanium black, alumina, silicon carbide and titanium carbide.
Claim 17
Dependent Claim
16 words
A film according to claim 1, wherein said particles have an average diameter of 0.1-1.5 microns.
Claim 18
Dependent Claim
27 words
A film according to claim 1, wherein the content of each of said two groups of particles is 0.5-0.4% by weight based on the poly-p-phenylene sulfide composition.
References Cited (Backward Citations)
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