摘要:
Weather resistant and water repellent surfacing compositions especially useful in roofing applications contain an alkoxysilane-terminated polymer and a reactive silane plasticizer containing a C6-40 hydrocarbon group. The surfacing compositions are of low viscosity and may be used without non-reactive plasticizers or organic solvents.
摘要:
The invention provides curable adhesives of high tensile sheer strength, which contain an α-silane-terminated polyurethane prepolymer containing low molecular weight polyether or polyester groups in the polymer backbone, and a silane-terminated polyether polymer containing polyether groups of higher molecular weight.
摘要:
The invention provides curable adhesives of high tensile sheer strength, which contain an a-silane-terminated polyurethane prepolymer containing low molecular weight polyether or polyester groups in the polymer backbone, and a silane-terminated polyether polymer containing polyether groups of higher molecular weight.
摘要:
Weather resistant and water repellent surfacing compositions especially useful in roofing applications contain an alkoxysilane-terminated polymer and a reactive silane plasticizer containing a C6-40 hydrocarbon group. The surfacing compositions are of low viscosity and may be used without non-reactive plasticizers or organic solvents.
摘要:
The invention relates to compounds (K) comprising A) 100 parts by weight of a pre-polymer (P) comprising units (E) in the backbone thereof that are selected from polyether and polyester units, wherein the pre-polymer (P) comprises at least one end group of the general formula (1) -L1-(CH2)y—SiR23-x(OR1)x (1), B) 1 to 100 parts by weight of silane (S) of the general formula (2) R4SiR23-Z(OR1)z (2), (G) 0 to 10 parts by weight of a curing catalyst (HK) that accelerates the curing of the compounds (K) in the presence of humidity, wherein L1 represents a divalent linking group selected from —O—, —S—, —(R3)N—, —O—CO—N(R3)—, —N(R3)—CO—O—, —N(R3)—CO—NH—, —NH—CO—N(R3)—, —N(R3)—CO—N(R3) and R1, R2, R3, x, y and z have the meanings cited in claim 1. R4 are hydrocarbon radicals having at least 7 hydrogen atoms. According to the invention, after hardening, the compounds (K) have high shear strength and are used as adhesives (K).