Patent ID: 9593222
Date: 2017-03-14
CPC Classifications: B29C,C08G,C08J,E06B

Claim:
1. A process for filling a window lineal cavity with a frothable polyurethane or a polyisocyanurate foam system without deforming a polymeric window lineal profile, said process comprising the step of: adding a two-component polyurethane or polyisocyanurate foam precursor to said cavity, said foam precursor comprising an effective amount of at least one blowing agent, including miscible blends and azeotropes thereof, said blowing agent comprising formula (I): wherein C is a carbon atom; V, X, Y and Z are independently selected from the group consisting of H, F and CI; a & d are independently selected from the integral values ranging from 0 to 3 inclusive; b & c are independently selected from the integral values ranging from 0 to 2 inclusive; o, p & n are equal to 1; m is selected from the integral values ranging from 0 to 1 inclusive; A, B and D are covalent bonds sufficient to satisfy the available bonding sites of adjacent carbon atoms, if such carbon atoms are present; said at least one blowing agent having a boiling point between approximately 5-50° C., and an ozone depletion potential of not greater than 0.05; said foam system having a reaction profile gel and tack time which is approximately between 2-6 minutes and said foam system having a peak exotherm below a temperature at which the polymeric window lineal profile deforms, said times and temperature attributable at least in part to a “B-side” composition which comprises: approximately between 0.4-2 weight % of at least one amine catalyst; approximately between 3-20 weight % of a polyol blend; approximately between 25-50 weight % of at least one phosphate flame retardant; approximately between 30-58 weight % of at least one non-ionic surfactant; a balance of water, said balance being no less than about 10-20 weight %; components within said “B-side” composition adjusted to total 100%.