Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
20 words
A prepreg consisting of a fiber reinforced resin having as a separate phase fine resin particles distributed throughout the prepreg.
Claim 2
Dependent Claim
20 words
A prepreg consisting of a fiber reinforced resin having as a separate phase fine resin particles distributed throughout the prepreg.
Claim 3
Dependent Claim
17 words
A prepreg according to claim 1 wherein the particles have a diameter of 2 µm or less.
Claim 4
Dependent Claim
37 words
A method of producing a prepreg according to claim 1 or claim 2 which comprises first preparing a mixture of [B] matrix resin and [C] fine resin particles and then combining the mixture with [A] reinforcing fibers.
Claim 5
Dependent Claim
38 words
A fiber reinforced resin laminate having as a separate phase resin particles of which 90% or more lie in interlayer zones which are not greater in width than 30% of the width of each layer forming the laminate
Claim 6
Dependent Claim
38 words
A fiber reinforced resin laminate having as a separate phase resin particles of which 90% or more lie in interlayer zones which are not greater in width than 30% of the width of each layer forming the laminate
Claim 7
Dependent Claim
55 words
A prepreg suitable for making the laminate of claim 4 the prepreg consisting of a fiber reinforced resin having as a separate phase resin particles lying in a zone or zones at one or both sides of the prepreg, the total width of the or each zone being 30% of the thickness of the prepreg.
Claim 8
Dependent Claim
20 words
A prepreg according to claim 5 wherein the particles have a diameter within the range 0.1 µm to 150 µm.
Claim 9
Dependent Claim
54 words
A method of producing a prepreg according to claim 5 or claim 6 which comprises preparing a first mixture of [A] reinforcing fibers and [B] matrix resin, and a second mixture of [B] matrix resin and [C] resin particles and then applying the second mixture to one or both faces of the first mixture.
Claim 10
Dependent Claim
35 words
A prepreg according to any one of claims 1, 2, 5 and 6 wherein the resin particles are composed of a resin having a strain energy releasing rate G 1c of 1500 J/m² or more.
Claim 11
Dependent Claim
39 words
A prepreg according to any one of claims 1, 2, 5, 6 and 8 wherein the resin particles are produced from a combination of a thermosetting resin and a thermoplastic resin which has, or can develop, a semi-interpenetrating-polymer-network structure.
Claim 12
Dependent Claim
40 words
A prepreg according to any one of claims 1, 2, 5, 6, 8 and 9 wherein the resin particles are composed of an epoxy resin and an amide which has, or can develop, a semi-interpenetrating-polymer-network structure with the epoxy resin.
Claim 13
Dependent Claim
23 words
A prepreg according to any one of claims 1, 2, 5, 6 and 8 to 10 wherein the resin particles are substantially spherical.
Claim 14
Dependent Claim
26 words
A prepreg according to any one of claims 1, 2, 5, 6 and 8 to 11 wherein the fibers are at least 5 cm in length.