US 12,606,663 B2 · Liquid composition for a fiber reinforced plastic intermediate base material, a fiber reinforced plastic intermediate base material, and a method of producing the fiber reinforced plastic intermediate base material

Abstract

The objective of the present invention is to provide a liquid composition which is for a fiber reinforced plastic intermediate base material, and which imparts excellent FRP mechanical properties and can suppress voids as much as possible. The liquid composition for a fiber reinforced plastic intermediate base material according to the present invention is characterized by being obtained by mixing (A) and (B). (A): a composition including a compound (a) having at least two isocyanate groups, and (B): a composition which includes (b1) as an essential component and may include (b2) and (b3). (b1): a monoalcohol compound having an ethylenically unsaturated group, (b2): a compound having at least two reactive groups with isocyanate groups, and (b3): a polymerization inhibitor.

Claims5

Dependent claims

A liquid composition for a fiber reinforced plastic intermediate base material made by blending the following (A) and (B) to form a resin on fibers or woven fabrics:

(A):
a composition containing a compound (a) having two or more isocyanate groups, and (B):
a composition containing the following (b1) and (b3) as an essential component, and further optionally containing (b2), wherein the liquid composition, which is a mixture of the compositions (A) and (B), has a viscosity of 5 to 200 mPa·s at 10 to 50° C. measured by a B-type viscometer,
(b1):
an ethylenically unsaturated group containing monoalcoholic compound,
(b2):
a compound having two or more reactive groups with isocyanate group,
(b3):
a polymerization inhibitor.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/429,872Filed 5 Feb 2020

Priority

JP 2019-02230312 Feb 2019

Published

US 2022/0169776 A12 Jun 2022

Granted

21 Apr 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification23 codes

C08G 18/10
Processes: prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
B29C 70/46
For producing articles of definite length, i.e. discrete articles: using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
C08G 18/4211
Containing aromatic groups: derived from aromatic dicarboxylic acids and dialcohols
C08G 18/4213
Derived from aromatic dicarboxylic acids and dialcohols: from terephthalic acid and dialcohols

Liquid composition for a fiber reinforced plastic intermediate base material, a fiber reinforced plastic intermediate base material, and a method of producing the fiber reinforced plastic intermediate base material

Life of this patent

Liquid composition for a fiber reinforced plastic intermediate base material, a fiber reinforced plastic intermediate base material, and a method of producing the fiber reinforced plastic intermediate base material

Life of this patent

Abstract

Claims5