Flame retardant textile
AssigneeEastern Michigan University
InventorsSubhas Ghosh, Vijaykumar M. Mannari, Vikas P. Joshi
Life of this patent
Estimating the term…
Abstract
The disclosure relates to curable polysilyl phosphate compounds and compositions as well as related methods and flame-retardant textiles incorporating the same. Curable polysilyl phosphate compounds according to the disclosure include a hydrocarbon moiety comprising at least one phosphate group and more than two hydrolysable silyl groups linked to the hydrocarbon moiety. In some embodiments, the hydrocarbon moiety is derived from spirocyclic pentaerythritol diphosphoryl chloride. The curable polysilyl phosphate compound can applied to a textile substrate and then cured to provide a flame-retardant textile with the cured polysilyl phosphate compound as a coating bonded to the textile substrate.
Claims19
A curable polysilyl phosphate composition comprising:
- (a) a curable polysilyl phosphate compound represented by the following structure (I):
- wherein:
- (i) a1 and a2 are the same or different and each is represented by the following structure (II):
- —R3—O—C(═O)—NA1A2;
- (II)
- (ii) A1 is represented by —R1—Si(R4)3-yXy;
- (iii) A2 is represented by —R2—Si(R4)3-zXz or H or R4;
- (iv) X is a hydrolysable group independently selected from the group consisting of alkoxy groups, aryloxy groups, carboxyloxy groups, halogens, and combinations thereof;
- (v) R1, R2, and R3 are independently selected from the group consisting of hydrocarbons containing from 1 to 20 carbon atoms and heteroatom-substituted hydrocarbons containing from 1 to 20 carbon atoms;
- (vi) R4 is independently selected from the group consisting of H, hydrocarbons containing from 1 to 20 carbon atoms, and heteroatom-substituted hydrocarbons containing from 1 to 20 carbon atoms;
- (vii) y is 1, 2, or 3;
- (viii) z is 1, 2, or 3 when A2 is not H or R4;
- and
- (ix) the curable polysilyl phosphate compound has a number of hydrolysable groups X of at least 4.
A curable polysilyl phosphate compound comprising:
- (a) a hydrocarbon moiety comprising at least 2 phosphate groups linked to one or more of hydrocarbon groups containing from 1 to 50 carbon atoms and heteroatom-substituted hydrocarbon groups containing from 1 to 50 carbon atoms;
- and
- (b) more than 2 hydrolysable silyl groups linked to the hydrocarbon moiety;
- wherein:
- (i) the hydrocarbon moiety is represented by —Ra—PO4—Rb—PO4—Ra—;
- (ii) PO4 are the phosphate groups;
- (iii) Ra are the same or different hydrocarbon groups or heteroatom-substituted hydrocarbon groups providing attachment points for the hydrolysable silyl groups linked to the hydrocarbon moiety;
- and
- (iv) Rb is a hydrocarbon group or a heteroatom-substituted hydrocarbon group linking the phosphate groups together.
Dependencies are inferred from the claim text.